FPUS55 KPIH 201832 ZFPPIH Zone Forecast Product FOR Idaho National Weather Service Pocatello ID 1232 PM MDT Wed May 20 2026 This forecast may not be representative of the exact location you are interested in. For a site-specific forecast, please visit weather.gov/Pocatello and click the map on the main page. IDZ072-211000- Sawtooth/Stanley Basin- Including Stanley 1232 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy with a slight chance of rain in the evening...then partly cloudy after midnight. Lows 27 to 37. .THURSDAY...Sunny. Highs 55 to 65. .THURSDAY NIGHT...Increasing clouds. Lows 30 to 40. .FRIDAY...Mostly sunny. Highs 60 to 70. .FRIDAY NIGHT...Mostly clear. Lows 32 to 42. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs 66 to 76. Lows 37 to 47. .SUNDAY...Mostly sunny. Highs 68 to 78. .SUNDAY NIGHT AND MEMORIAL DAY...Mostly clear. Lows 37 to 47. Highs 67 to 77. .MONDAY NIGHT...Partly cloudy with a slight chance of rain. Lows 35 to 45. .TUESDAY...Partly sunny with a chance of rain showers, a slight chance of thunderstorms and snow. Highs 57 to 67. .TUESDAY NIGHT AND WEDNESDAY...Mostly cloudy. A chance of rain showers, snow showers and a slight chance of thunderstorms. Lows 30 to 40. Highs 53 to 63. $$ IDZ073-211000- Sun Valley Region- Including Ketchum, Sun Valley, and Galena 1232 PM MDT Wed May 20 2026 .TONIGHT...Partly cloudy. Lows 30 to 38. .THURSDAY...Sunny. Highs 57 to 67. .THURSDAY NIGHT...Increasing clouds. Lows 31 to 40. .FRIDAY...Mostly sunny. Highs 60 to 70. .FRIDAY NIGHT...Mostly clear. Lows 34 to 44. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs 68 to 78. Lows 39 to 49. .SUNDAY...Mostly sunny. Highs 70 to 80. .SUNDAY NIGHT AND MEMORIAL DAY...Mostly clear. Lows 39 to 49. Highs 70 to 80. .MONDAY NIGHT...Partly cloudy. Lows 38 to 48. .TUESDAY...Mostly sunny with a slight chance of rain and snow. Highs 61 to 71. .TUESDAY NIGHT...Mostly cloudy with a chance of rain showers, snow and a slight chance of thunderstorms. Lows 33 to 42. .WEDNESDAY...Partly sunny with a chance of rain showers, snow showers and a slight chance of thunderstorms. Highs 54 to 64. $$ IDZ052-053-211000- Arco/Mud Lake Desert-Upper Snake River Plain- Including Mud Lake, INL, Craters of the Moon NM, Idaho Falls, Rexburg, and St. Anthony 1232 PM MDT Wed May 20 2026 .TONIGHT...Cloudy. A chance of rain showers and a slight chance of thunderstorms in the evening...then a chance of rain after midnight. Lows 34 to 41. West winds 10 to 15 mph...shifting to northeast after midnight. .THURSDAY...Mostly sunny. A chance of rain in the morning. Highs 55 to 64. North winds 10 to 20 mph. Chance of precipitation 50 percent. .THURSDAY NIGHT...Partly cloudy. Lows 30 to 38. Northeast winds 10 to 15 mph. .FRIDAY...Mostly sunny. Warmer. Highs 61 to 70. East winds up to 10 mph. .FRIDAY NIGHT...Partly cloudy. Lows 35 to 43. South winds around 10 mph. .SATURDAY...Sunny. Highs 71 to 80. .SATURDAY NIGHT THROUGH SUNDAY NIGHT...Partly cloudy. Lows 41 to 51. Highs 75 to 83. .MEMORIAL DAY...Sunny. Highs 77 to 84. .MONDAY NIGHT AND TUESDAY...Partly cloudy. Breezy. Lows 43 to 53. Highs 69 to 77. .TUESDAY NIGHT...Partly cloudy with a chance of rain showers and a slight chance of thunderstorms. Breezy. Lows 36 to 45. .WEDNESDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs 62 to 69. $$ IDZ051-211000- Shoshone/Lava Beds- Including Shoshone, Richfield, and Carey 1232 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy in the evening...then partly cloudy with a slight chance of rain after midnight. Lows 35 to 42. West winds 10 to 20 mph...shifting to northeast around 10 mph after midnight. .THURSDAY...Mostly sunny. A chance of rain in the morning. Highs 63 to 70. Northeast winds up to 10 mph...shifting to northwest around 10 mph in the afternoon. Chance of precipitation 40 percent. .THURSDAY NIGHT...Partly cloudy. Lows 35 to 44. Northeast winds 10 to 15 mph. .FRIDAY...Mostly sunny. Highs 68 to 75. East winds around 10 mph. .FRIDAY NIGHT...Mostly clear. Lows 38 to 45. Southwest winds up to 10 mph. .SATURDAY THROUGH MEMORIAL DAY...Mostly clear. Highs 77 to 87. Lows 43 to 52. .MONDAY NIGHT AND TUESDAY...Partly cloudy. Lows 43 to 50. Highs 69 to 76. .TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. A slight chance of rain. Breezy. Lows 35 to 42. Highs 62 to 69. $$ IDZ056-057-211000- Southern Hills/Albion Mountains-Raft River Region- Including Albion, Almo, Malta, Rockland, and Holbrook 1232 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. A slight chance of rain after midnight. Lows 38 to 47. West winds 10 to 15 mph. .THURSDAY...Mostly sunny. A chance of rain in the morning. Highs 60 to 67. North winds 10 to 20 mph. .THURSDAY NIGHT...Partly cloudy. Lows 35 to 45. North winds around 10 mph...shifting to southeast up to 10 mph after midnight. .FRIDAY...Mostly sunny. Warmer. Highs 66 to 73. Southwest winds up to 10 mph. .FRIDAY NIGHT...Mostly clear. Lows 40 to 50. South winds around 10 mph. .SATURDAY...Sunny. Highs 75 to 82. .SATURDAY NIGHT THROUGH SUNDAY NIGHT...Partly cloudy. Lows 48 to 58. Highs 77 to 85. .MEMORIAL DAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs 79 to 87. .MONDAY NIGHT AND TUESDAY...Partly cloudy. Breezy. Lows 46 to 56. Highs 68 to 78. .TUESDAY NIGHT...Partly cloudy with a slight chance of rain. Breezy. Lows 37 to 45. .WEDNESDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs 60 to 69. $$ IDZ058-059-211000- Marsh and Arbon Highlands-Franklin/Eastern Oneida Region- Including Inkom, McCammon, Downey, Lava Hot Springs, Malad, Preston, and Thatcher 1232 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. A chance of rain after midnight. Lows 36 to 46. .THURSDAY...Rain showers likely and a slight chance of thunderstorms in the morning...then a slight chance of showers and thunderstorms in the afternoon. Highs 54 to 64. .THURSDAY NIGHT...Partly cloudy. Colder. Lows 30 to 40. .FRIDAY...Mostly sunny. Warmer. Highs 60 to 70. .FRIDAY NIGHT...Mostly clear. Lows 35 to 45. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs 69 to 79. Lows 42 to 52. .SUNDAY THROUGH MONDAY NIGHT...Partly cloudy. Highs 74 to 84. Lows 44 to 54. .TUESDAY...Mostly sunny. Breezy. Highs 68 to 77. .TUESDAY NIGHT...Partly cloudy with a slight chance of rain. Lows 37 to 47. .WEDNESDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs 60 to 70. $$ IDZ054-211000- Lower Snake River Plain- Including Pocatello, Blackfoot, American Falls, Shelley, and Fort Hall 1232 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. A chance of rain after midnight. Lows 37 to 44. West winds 10 to 15 mph...shifting to northeast after midnight. .THURSDAY...Mostly cloudy with a chance of rain in the morning... then mostly sunny in the afternoon. Highs 59 to 66. North winds 10 to 20 mph. Chance of precipitation 50 percent. .THURSDAY NIGHT...Partly cloudy. Lows 31 to 39. Northeast winds 10 to 15 mph. .FRIDAY...Mostly sunny. Highs 64 to 72. Northeast winds up to 10 mph. .FRIDAY NIGHT...Mostly clear. Lows 35 to 44. South winds around 10 mph. .SATURDAY THROUGH SUNDAY...Mostly clear. Highs 72 to 82. Lows 42 to 51. .SUNDAY NIGHT THROUGH MONDAY NIGHT...Partly cloudy. Lows 43 to 53. Highs 76 to 85. .TUESDAY...Mostly sunny. Highs 70 to 77. .TUESDAY NIGHT...Partly cloudy with a slight chance of rain. Breezy. Lows 36 to 44. .WEDNESDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs 62 to 69. $$ IDZ075-211000- Wood River Foothills- Including Hailey, Bellevue, and Picabo 1232 PM MDT Wed May 20 2026 .TONIGHT...Decreasing clouds. Lows 34 to 43. Northwest winds 10 to 20 mph. .THURSDAY...Sunny. Highs 58 to 68. North winds up to 10 mph. .THURSDAY NIGHT...Increasing clouds. Lows 35 to 43. Northeast winds up to 10 mph. .FRIDAY...Mostly sunny. Highs 62 to 72. South winds around 10 mph. .FRIDAY NIGHT...Mostly clear. Lows 37 to 47. Northwest winds up to 10 mph. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs 70 to 80. Lows 44 to 54. .SUNDAY...Mostly sunny. Highs 72 to 82. .SUNDAY NIGHT AND MEMORIAL DAY...Mostly clear. Lows 43 to 53. Highs 72 to 82. .MONDAY NIGHT AND TUESDAY...Partly cloudy. Lows 42 to 52. Highs 63 to 73. .TUESDAY NIGHT...Mostly cloudy with a chance of rain and a slight chance of thunderstorms. Lows 35 to 44. .WEDNESDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs 56 to 65. $$ IDZ069-211000- Lost River Range- Including Borah Peak 1232 PM MDT Wed May 20 2026 .TONIGHT...Snow showers likely with possible showers and thunderstorms in the evening...then a chance of snow and rain after midnight. Snow accumulation up to 1 inch. Snow level 8100 feet. Lows 34 to 41. .THURSDAY...Mostly sunny. Breezy. Highs 52 to 62. .THURSDAY NIGHT...Partly cloudy. Lows 33 to 40. .FRIDAY...Mostly sunny. Not as cool. Highs 57 to 67. .FRIDAY NIGHT...Partly cloudy. Lows 38 to 45. .SATURDAY...Sunny. Highs 66 to 76. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows 43 to 50. Highs 69 to 79. .SUNDAY NIGHT...Mostly clear. Lows 43 to 50. .MEMORIAL DAY AND MONDAY NIGHT...Partly cloudy. Breezy. Highs 70 to 80. Lows 44 to 51. .TUESDAY...Mostly sunny with a slight chance of rain. Windy. Highs 62 to 72. .TUESDAY NIGHT...Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms. Breezy. Lows 38 to 45. .WEDNESDAY...Partly sunny with a chance of rain showers, snow showers and a slight chance of thunderstorms. Highs 56 to 66. $$ IDZ063-064-211000- Caribou Range-Big Hole Mountains- Including Wayan, Swan Valley, and Victor 1232 PM MDT Wed May 20 2026 .TONIGHT...A chance of rain showers and a slight chance of thunderstorms in the evening...then a chance of rain and snow likely after midnight. Snow accumulation around 1 inch. Lows 33 to 40. .THURSDAY...Rain showers, snow showers likely and a slight chance of thunderstorms in the morning...then a chance of rain showers, thunderstorms and snow showers in the afternoon. Snow accumulation around 1 inch. Highs 51 to 58. .THURSDAY NIGHT...Mostly clear. Colder. Lows 27 to 35. .FRIDAY...Mostly sunny. Not as cool. Highs 59 to 67. .FRIDAY NIGHT...Partly cloudy. Lows 31 to 41. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs 67 to 75. Lows 37 to 46. .SUNDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs 72 to 79. .SUNDAY NIGHT THROUGH MONDAY NIGHT...Partly cloudy. Lows 39 to 49. Highs 73 to 82. .TUESDAY...Mostly sunny with a chance of showers and thunderstorms. Highs 66 to 73. .TUESDAY NIGHT...Partly cloudy with a slight chance of showers and thunderstorms. Lows 36 to 44. .WEDNESDAY...Mostly sunny with a chance of showers and thunderstorms. Highs 60 to 69. $$ IDZ068-070-211000- Lost River Valley-Challis/Pahsimeroi Valleys- Including Howe, Arco, Mackay, Chilly, and Challis 1232 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. A chance of rain showers and a slight chance of thunderstorms in the evening...then a chance of rain and a slight chance of snow after midnight. No snow accumulation. Lows 34 to 41. Northwest winds 10 to 15 mph. .THURSDAY...Mostly sunny. Highs 54 to 64. North winds 10 to 15 mph. .THURSDAY NIGHT...Partly cloudy. Lows 32 to 39. North winds around 10 mph in the evening...becoming light and variable. .FRIDAY...Mostly sunny. Warmer. Highs 61 to 71. Southwest winds up to 10 mph. .FRIDAY NIGHT...Partly cloudy. Lows 36 to 43. Light and variable winds. .SATURDAY...Sunny. Highs 69 to 79. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows 41 to 48. Highs 71 to 81. .SUNDAY NIGHT AND MEMORIAL DAY...Mostly clear. Lows 41 to 48. Highs 71 to 81. .MONDAY NIGHT...Partly cloudy. Lows 41 to 49. .TUESDAY...Mostly sunny with a chance of rain showers and a slight chance of thunderstorms. Breezy. Highs 64 to 74. .TUESDAY NIGHT...Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms. Lows 37 to 44. .WEDNESDAY...Partly sunny with a chance of rain showers and a slight chance of thunderstorms. Highs 58 to 68. $$ IDZ066-067-211000- Centennial Mountains - Island Park-Beaverhead - Lemhi Highlands- Including Island Park, Kilgore, Dubois, Spencer, Edie School, and Small 1232 PM MDT Wed May 20 2026 .TONIGHT...Rain and a slight chance of thunderstorms in the evening...then a chance of rain and snow after midnight. Snow accumulation up to 2 inches. Lows 30 to 40. .THURSDAY...Mostly sunny. A chance of rain and a slight chance of snow in the morning. Little or no snow accumulation. Highs 50 to 58. .THURSDAY NIGHT...Mostly clear. Lows 26 to 36. .FRIDAY...Mostly sunny. Not as cool. Highs 58 to 65. .FRIDAY NIGHT...Partly cloudy. Lows 32 to 42. .SATURDAY...Sunny. Highs 66 to 74. .SATURDAY NIGHT THROUGH SUNDAY NIGHT...Partly cloudy. Lows 37 to 47. Highs 71 to 78. .MEMORIAL DAY...Sunny. Highs 72 to 80. .MONDAY NIGHT...Partly cloudy. Lows 38 to 48. .TUESDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs 65 to 72. .TUESDAY NIGHT AND WEDNESDAY...Mostly cloudy. A chance of rain showers and a slight chance of thunderstorms. Lows 35 to 43. Highs 59 to 66. $$ IDZ065-211000- Teton Valley- Including Ashton, Tetonia, and Driggs 1232 PM MDT Wed May 20 2026 .TONIGHT...Cloudy. A chance of rain showers and a slight chance of thunderstorms in the evening...then a chance of rain after midnight. Lows 32 to 39. .THURSDAY...Partly sunny. A chance of rain in the morning...then a slight chance of showers and thunderstorms in the afternoon. Highs 52 to 59. .THURSDAY NIGHT...Mostly clear. Lows 26 to 33. .FRIDAY...Mostly sunny. Warmer. Highs around 63. .FRIDAY NIGHT...Partly cloudy. Lows 33 to 40. .SATURDAY...Sunny. Highs 68 to 75. .SATURDAY NIGHT...Partly cloudy. Lows 40 to 47. .SUNDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs 73 to 80. .SUNDAY NIGHT...Partly cloudy. Lows 42 to 49. .MEMORIAL DAY...Sunny with a slight chance of showers and thunderstorms. Highs 74 to 81. .MONDAY NIGHT...Partly cloudy. Lows 43 to 50. .TUESDAY...Mostly sunny with a chance of showers and thunderstorms. Highs around 71. .TUESDAY NIGHT...Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms. Lows 38 to 45. .WEDNESDAY...Mostly sunny with a chance of showers and thunderstorms. Highs around 65. $$ IDZ062-211000- Blackfoot Mountains- Including Grace, Soda Springs, Henry, and Bone 1232 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. A chance of rain after midnight. Lows 34 to 44. .THURSDAY...Rain showers likely and a slight chance of thunderstorms in the morning...then a slight chance of showers and thunderstorms in the afternoon. Highs 51 to 59. .THURSDAY NIGHT...Mostly clear. Colder. Lows 27 to 37. .FRIDAY...Mostly sunny. Warmer. Highs 57 to 65. .FRIDAY NIGHT...Mostly clear. Lows 33 to 43. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs 65 to 75. Lows 40 to 50. .SUNDAY THROUGH MONDAY NIGHT...Partly cloudy. Highs 70 to 80. Lows 42 to 52. .TUESDAY AND TUESDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms. Breezy. Highs 64 to 73. Lows 36 to 46. .WEDNESDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs 59 to 67. $$ IDZ060-211000- Bear River Range- Including Emigration Summit 1232 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. A chance of rain and snow after midnight. Little or no snow accumulation. Lows 42 to 49. .THURSDAY...Rain showers, snow showers and a slight chance of thunderstorms in the morning...then snow showers likely, a chance of showers and thunderstorms in the afternoon. Little or no snow accumulation. Snow level at ridgetop. Highs 50 to 57. .THURSDAY NIGHT...Mostly clear. Colder. Lows 34 to 41. .FRIDAY...Mostly sunny. Not as cool. Highs 58 to 65. .FRIDAY NIGHT...Mostly clear. Lows 40 to 47. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs 66 to 73. Lows 47 to 55. .SUNDAY...Sunny. Highs 70 to 77. .SUNDAY NIGHT...Partly cloudy. Lows 49 to 57. .MEMORIAL DAY...Sunny. Highs 72 to 79. .MONDAY NIGHT...Partly cloudy. Lows 50 to 58. .TUESDAY AND TUESDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms. Highs 66 to 73. Lows 44 to 51. .WEDNESDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs 59 to 66. $$ IDZ061-211000- Bear Lake Valley- Including St. Charles, Montpelier, and Georgetown 1232 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. A chance of rain after midnight. Lows 32 to 42. .THURSDAY...Rain showers and a slight chance of thunderstorms in the morning...then rain showers likely and a chance of thunderstorms in the afternoon. Highs 51 to 58. .THURSDAY NIGHT...Mostly clear. Lows 27 to 37. .FRIDAY...Mostly sunny. Not as cool. Highs 57 to 64. .FRIDAY NIGHT...Mostly clear. Lows 31 to 41. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs 64 to 73. Lows 37 to 45. .SUNDAY...Sunny. Highs 68 to 78. .SUNDAY NIGHT...Partly cloudy. Lows 39 to 47. .MEMORIAL DAY...Sunny. Highs 70 to 80. .MONDAY NIGHT...Partly cloudy. Lows 41 to 49. .TUESDAY AND TUESDAY NIGHT...Partly cloudy. A slight chance of showers and thunderstorms. Highs 66 to 73. Lows 36 to 45. .WEDNESDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs 61 to 68. $$ IDZ071-074-211000- Frank Church Wilderness-Big Lost Highlands/Copper Basin- Including Clayton and Copper Basin 1232 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. A chance of rain showers, snow and a slight chance of thunderstorms in the evening...then a chance of snow and a slight chance of rain after midnight. Little or no snow accumulation. Lows 29 to 38. .THURSDAY...Mostly sunny. Highs 53 to 63. .THURSDAY NIGHT...Increasing clouds. Lows 30 to 39. .FRIDAY...Mostly sunny. Highs 59 to 69. .FRIDAY NIGHT...Partly cloudy. Lows 33 to 42. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs 66 to 76. Lows 39 to 49. .SUNDAY...Mostly sunny. Highs 67 to 77. .SUNDAY NIGHT...Mostly clear. Lows 38 to 48. .MEMORIAL DAY AND MONDAY NIGHT...Partly cloudy. Breezy. Highs 67 to 77. Lows 38 to 48. .TUESDAY...Mostly sunny with a chance of rain showers, a slight chance of thunderstorms and snow. Highs 59 to 69. .TUESDAY NIGHT...Mostly cloudy with a chance of rain showers, snow and a slight chance of thunderstorms. Lows 32 to 42. .WEDNESDAY...Partly sunny with a chance of rain showers, snow showers and a slight chance of thunderstorms. Highs 55 to 65. $$ IDZ055-211000- Eastern Magic Valley- Including Burley, Rupert, Heyburn, and Oakley 1232 PM MDT Wed May 20 2026 .TONIGHT...Mostly cloudy. A slight chance of rain after midnight. Lows 38 to 47. West winds 10 to 15 mph...shifting to north after midnight. .THURSDAY...Partly sunny. A chance of rain in the morning. Highs 62 to 69. Northeast winds up to 10 mph...shifting to north in the afternoon. Chance of precipitation 50 percent. .THURSDAY NIGHT...Decreasing clouds. Lows 35 to 45. Northeast winds around 10 mph. .FRIDAY...Mostly sunny. Highs 68 to 75. East winds up to 10 mph. .FRIDAY NIGHT...Mostly clear. Lows 39 to 49. South winds around 10 mph. .SATURDAY THROUGH SUNDAY...Mostly clear. Highs 77 to 86. Lows 46 to 56. .SUNDAY NIGHT THROUGH MONDAY NIGHT...Partly cloudy. Lows 46 to 56. Highs 80 to 87. .TUESDAY...Sunny. Highs 71 to 78. .TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. A slight chance of rain. Breezy. Lows 37 to 45. Highs 63 to 70. $$ weather information on-line 24-hours a day www.weather.gov/pocatello