FPUS65 KTFX 212200
SFPMT

State Forecast For Montana
National Weather Service Great Falls MT
400 PM MDT Thu May 21 2026

MTZ001>007-043-221000-
West of the Continental Divide-
National Weather Service Missoula MT
400 PM MDT Thu May 21 2026

.TONIGHT...Partly cloudy. Lows in the 30s.
.FRIDAY...Partly cloudy. Highs in the mid 60s to lower 70s.
.FRIDAY NIGHT...Partly cloudy. Lows in the mid 30s to lower 40s.
.SATURDAY...Partly cloudy. Highs in the 70s to lower 80s.
.SUNDAY...Mostly clear. 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 mid 70s to lower 80s.
.TUESDAY...Mostly cloudy with rain showers likely. Lows in the
upper 30s to mid 40s. Highs in the mid 60s to lower 70s.

$$

MTZ301>314-316>318-221000-
Central Montana-
National Weather Service Great Falls MT
400 PM MDT Thu May 21 2026

.TONIGHT...Partly cloudy. Lows 35 to 40...25 to 35 in the
mountains.
.FRIDAY...Partly cloudy. Highs 60 to 70...50 to 60 in the
mountains.
.FRIDAY NIGHT...Mostly cloudy in the evening then becoming partly
cloudy. Slight chance of rain showers. Lows 40 to 45...35 to
40 in the mountains.
.SATURDAY...Mostly clear. Highs 70 to 80.
.SUNDAY...Mostly clear. Lows 45 to 50. Highs 75 to 85.
.MEMORIAL DAY...Partly cloudy. Slight chance of rain. Lows 45 to
50. Highs 75 to 85.
.TUESDAY...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms. Lows 45 to 55. Highs 70 to 80.
$$

MTZ315-319>330-221000-
Southwest Montana-
National Weather Service Great Falls MT
400 PM MDT Thu May 21 2026

.TONIGHT...Partly cloudy. Lows 30 to 35...25 to 30 in the
mountains.
.FRIDAY...Partly cloudy. Highs 60 to 65...50 to 60 in the
mountains.
.FRIDAY NIGHT...Mostly cloudy in the evening then becoming partly
cloudy. Slight chance of rain showers. Lows 30 to 40.
.SATURDAY...Partly cloudy. Highs 65 to 75.
.SUNDAY...Partly cloudy. Lows 40 to 45. Highs 65 to 75.
.MEMORIAL DAY...Partly cloudy. Lows 40 to 45. Highs 70 to 80.
.TUESDAY...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms. Lows 40 to 50. Highs 60 to 70.
$$

MTZ016>027-059>062-221000-
Northeast Montana-
National Weather Service Glasgow MT
400 PM MDT Thu May 21 2026

.REST OF TODAY...Mostly cloudy with a chance of showers. Highs
near 60.
.TONIGHT...Mostly cloudy with a chance of rain showers. Lows near
40.
.FRIDAY...Partly cloudy. Highs in the mid to upper 60s.
.SATURDAY...Partly cloudy. Highs in the 70s. Lows near 40.
.SUNDAY...Mostly clear. Highs in the 80s. Lows in the mid 40s to
lower 50s.
.MEMORIAL DAY...Mostly clear. Highs near 90. Lows in the lower to
mid 50s.

$$

MTZ028>042-056>058-063>068-221000-
South Central and Southeast Montana-
National Weather Service Billings MT
400 PM MDT Thu May 21 2026

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

.TONIGHT...Mostly cloudy. Slight chance of rain showers. Lows in
the lower 30s to the lower 40s.
.FRIDAY...Sunny. Highs of around 60 to around 70.
.FRIDAY NIGHT...Partly cloudy. Lows in the mid 30s to the mid
40s.
.SATURDAY...Sunny. Highs in the lower 70s to the lower 80s.
.SATURDAY NIGHT...Partly cloudy. Lows in the lower 40s to the
lower 50s.
.SUNDAY THROUGH MEMORIAL DAY...Mostly clear. Lows in the mid 40s
to the mid 50s. Highs in the lower 80s to the lower 90s.
.MONDAY NIGHT...Partly cloudy. Lows in the upper 40s to the upper
50s.
.TUESDAY...Mostly sunny. Chance of rain showers and slight chance
of thunderstorms. Highs in the upper 70s to lower 90s.

$$