FPUS65 KTFX 211030
SFPMT

State Forecast For Montana
National Weather Service Great Falls MT
430 AM MDT Thu May 21 2026

MTZ001>007-043-212200-
West of the Continental Divide-
National Weather Service Missoula MT
430 AM MDT Thu May 21 2026

.TODAY...Mostly sunny. Highs in the 60s.
.TONIGHT...Partly cloudy. Lows in the 30s.
.FRIDAY...Partly cloudy. Highs in the upper 60s to mid 70s.
.SATURDAY...Mostly clear. Lows in the mid 30s to lower 40s. Highs
in the 70s to lower 80s.
.SUNDAY...Partly cloudy. Lows in the 40s. Highs in the mid 70s to
lower 80s.
.MEMORIAL DAY...Partly cloudy. A chance of rain. Lows in the 40s.
Highs in the 70s.

$$

MTZ301>314-316>318-212200-
Central Montana-
National Weather Service Great Falls MT
430 AM MDT Thu May 21 2026

.TODAY...Mostly cloudy. Patchy fog in the morning. Slight chance
of rain showers in the afternoon. Highs 55 to 60...45 to 55 in
the mountains.
.TONIGHT...Partly cloudy. Lows 35 to 40...30 to 35 in the
mountains.
.FRIDAY...Partly cloudy. Highs 65 to 70...50 to 60 in the
mountains.
.SATURDAY...Mostly clear. Lows 40 to 45. Highs 70 to 80.
.SUNDAY...Partly cloudy. Lows 45 to 50. Highs 75 to 85.
.MEMORIAL DAY...Partly cloudy. Chance of rain. Lows 45 to 50.
Highs 75 to 85.
$$

MTZ315-319>330-212200-
Southwest Montana-
National Weather Service Great Falls MT
430 AM MDT Thu May 21 2026

.TODAY...Mostly cloudy in the morning then becoming partly
cloudy. Chance of snow showers and rain in the morning. Slight
chance of rain showers, thunderstorms and snow showers in the
afternoon. Highs 50 to 55...40 to 50 in the mountains.
.TONIGHT...Partly cloudy. Lows 30 to 35...25 to 30 in the
mountains.
.FRIDAY...Increasing clouds. Highs 60 to 65...50 to 60 in the
mountains.
.SATURDAY...Mostly clear. Lows 35 to 40. Highs 65 to 75.
.SUNDAY...Partly cloudy. Lows 40 to 45. Highs 65 to 75.
.MEMORIAL DAY...Partly cloudy. Slight chance of rain. Lows 40 to
45. Highs 70 to 80.
$$

MTZ016>027-059>062-212200-
Northeast Montana-
National Weather Service Glasgow MT
430 AM MDT Thu May 21 2026

.TODAY...Mostly cloudy. A chance of rain showers in the morning,
then a chance of rain showers and a slight chance of
thunderstorms in the afternoon. Highs near 60.
.TONIGHT...Mostly cloudy. A chance of rain showers in the
evening, then a slight chance of rain showers after midnight.
Lows near 40.
.FRIDAY...Partly cloudy. Highs in the mid 60s to lower 70s.
.SATURDAY...Partly cloudy. Highs in the mid to upper 70s. Lows in
the lower to mid 40s.
.SUNDAY...Mostly clear. Highs in the 80s. Lows near 50.
.MEMORIAL DAY...Partly cloudy. Highs in the mid 80s to lower 90s.
Lows in the lower to mid 50s.

$$

MTZ028>042-056>058-063>068-212200-
South Central and Southeast Montana-
National Weather Service Billings MT
430 AM MDT Thu May 21 2026

...Winter Storm Warning in effect until 6 PM MDT this evening for
   portions of South Central Montana...
...Winter Weather Advisory in effect until 9 PM MDT this evening for
   portions of South Central Montana...

.TODAY...Rain and isolated thunderstorms west...and showers
likely and slight chance of thunderstorms east. Highs around
50 to the lower 60s.
.TONIGHT...Mostly cloudy. Chance of rain showers. Lows in the
lower 30s to the lower 40s.
.FRIDAY...Mostly sunny. Highs in the lower 60s to the lower 70s.
.FRIDAY NIGHT...Partly cloudy. Lows in the mid 30s to the mid
40s.
.SATURDAY AND SATURDAY NIGHT...Mostly clear. Lows in the mid 40s
to lower 50s. Highs in the lower 70s to around 80.
.SUNDAY...Sunny. Highs of around 80 to around 90.
.SUNDAY NIGHT...Partly cloudy. Lows in the mid 40s to the mid
50s.
.MEMORIAL DAY...Sunny. Highs in the lower 80s to the lower 90s.

$$