Plains, MT Weather Forecast
Local 7-day forecast
Slight Chance Snow Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Plains, MT in one place.
A slight chance of snow showers before noon, then a slight chance of rain and snow showers. Partly sunny, with a high near 51. Chance of precipitation is 20%.
Local Weather Overview
This forecast page for Plains, MT is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 15, 2026 5:18 AM MDT.
The active forecast window currently covers Apr 17 to Apr 21, 2026 for Plains, MT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 17 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 5:18 AM MDT
- Forecast office
- MSO
- Source
- NOAA / NWS
Daily Outlook
This Week in Plains
Tuesday looks like the warmest upcoming period in Plains at 74 degrees F.
Friday Night is the coolest period ahead with temperatures near 27 degrees F.
The strongest winds are forecast for Friday at about 2 to 6 mph WSW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 5:18 AM MDT
- Coverage
- 5 days
- Time zone
- America/Denver
- Forecast office
- MSO
- Radar station
- KMSX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 27.
Mostly sunny, with a high near 59.
Partly cloudy, with a low around 32.
Mostly sunny, with a high near 69.
Partly cloudy, with a low around 39.
Mostly sunny, with a high near 73.
A slight chance of rain after midnight. Partly cloudy, with a low around 42.
A slight chance of rain after noon. Mostly sunny, with a high near 74.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Apr 17
|
Slight Chance Snow Showers
|
51°F |
2 to 6 mph
WSW
|
|
Friday Night
Apr 17
|
Mostly Clear
|
27°F |
1 to 6 mph
WSW
|
|
Saturday
Apr 18
|
Mostly Sunny
|
59°F |
3 mph
SSW
|
|
Saturday Night
Apr 18
|
Partly Cloudy
|
32°F |
1 to 5 mph
SW
|
|
Sunday
Apr 19
|
Mostly Sunny
|
69°F |
3 mph
SSW
|
|
Sunday Night
Apr 19
|
Partly Cloudy
|
39°F |
1 to 5 mph
SW
|
|
Monday
Apr 20
|
Mostly Sunny
|
73°F |
1 to 5 mph
SW
|
|
Monday Night
Apr 20
|
Partly Cloudy then Slight Chance Light Rain
|
42°F |
5 mph
WSW
|
|
Tuesday
Apr 21
|
Mostly Sunny then Slight Chance Light Rain
|
74°F |
5 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Plains.