Sunnyside, MT Weather Forecast
Local 7-day forecast
Partly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Sunnyside, MT in one place.
Partly cloudy, with a low around 35. West wind around 22 mph, with gusts as high as 32 mph.
Local Weather Overview
This forecast page for Sunnyside, 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: Nov 11, 2026 1:36 AM MST.
The active forecast window currently covers Nov 11 to Nov 17, 2026 for Sunnyside, MT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Nov 11 to Nov 17, 2026
- Latest sync
- Nov 11, 2026 1:36 AM MST
- Forecast office
- MSO
- Source
- NOAA / NWS
Daily Outlook
This Week in Sunnyside
Thursday looks like the warmest upcoming period in Sunnyside at 49 degrees F.
Sunday Night is the coolest period ahead with temperatures near 28 degrees F.
The strongest winds are forecast for Overnight at about 22 mph W.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Nov 11, 2026 1:36 AM MST
- Coverage
- 7 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
Partly sunny. High near 47, with temperatures falling to around 42 in the afternoon. West southwest wind 9 to 21 mph, with gusts as high as 29 mph.
Mostly cloudy, with a low around 36. Southwest wind 12 to 18 mph, with gusts as high as 24 mph.
Partly sunny, with a high near 49. South southwest wind 7 to 17 mph, with gusts as high as 25 mph.
Mostly cloudy, with a low around 33. South southwest wind 8 to 15 mph, with gusts as high as 21 mph.
Partly sunny, with a high near 44.
Mostly cloudy, with a low around 32.
A chance of snow after 11am. Partly sunny, with a high near 39.
A chance of snow before 11pm. Mostly cloudy, with a low around 29.
Mostly sunny, with a high near 38.
Partly cloudy, with a low around 28.
A chance of snow after 11am. Partly sunny, with a high near 37.
A chance of snow. Mostly cloudy, with a low around 29.
A chance of snow. Partly sunny, with a high near 33. New snow accumulation of less than half an inch possible.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Nov 11
|
Partly Cloudy
|
35°F |
22 mph
W
|
|
Veterans Day
Nov 11
|
Partly Sunny
|
47°F |
9 to 21 mph
WSW
|
|
Wednesday Night
Nov 11
|
Mostly Cloudy
|
36°F |
12 to 18 mph
SW
|
|
Thursday
Nov 12
|
Partly Sunny
|
49°F |
7 to 17 mph
SSW
|
|
Thursday Night
Nov 12
|
Mostly Cloudy
|
33°F |
8 to 15 mph
SSW
|
|
Friday
Nov 13
|
Partly Sunny
|
44°F |
8 to 16 mph
S
|
|
Friday Night
Nov 13
|
Mostly Cloudy
|
32°F |
9 to 16 mph
S
|
|
Saturday
Nov 14
|
Chance Light Snow
|
39°F |
6 to 13 mph
SSW
|
|
Saturday Night
Nov 14
|
Chance Light Snow then Mostly Cloudy
|
29°F |
6 to 10 mph
WSW
|
|
Sunday
Nov 15
|
Mostly Sunny
|
38°F |
6 to 12 mph
SW
|
|
Sunday Night
Nov 15
|
Partly Cloudy
|
28°F |
6 to 12 mph
SW
|
|
Monday
Nov 16
|
Chance Light Snow
|
37°F |
3 to 10 mph
SSW
|
|
Monday Night
Nov 16
|
Chance Light Snow
|
29°F |
3 to 7 mph
SW
|
|
Tuesday
Nov 17
|
Chance Light Snow
|
33°F |
5 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sunnyside.