Garrison, MT Weather Forecast
Local 7-day forecast
Patchy Fog then Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Garrison, MT in one place.
Patchy fog before 9am. Mostly sunny. High near 49, with temperatures falling to around 44 in the afternoon. West southwest wind around 3 mph.
Local Weather Overview
This forecast page for Garrison, 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 5, 2026 4:46 PM MST.
The active forecast window currently covers Nov 6 to Nov 11, 2026 for Garrison, MT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Nov 6 to Nov 11, 2026
- Latest sync
- Nov 5, 2026 4:46 PM MST
- Forecast office
- MSO
- Source
- NOAA / NWS
Daily Outlook
This Week in Garrison
Saturday looks like the warmest upcoming period in Garrison at 57 degrees F.
Sunday Night is the coolest period ahead with temperatures near 28 degrees F.
The strongest winds are forecast for Sunday at about 7 to 14 mph WSW.
The forecast from Nov 6 through Nov 11 stays mostly dry.
Forecast Details
- Last updated
- Nov 5, 2026 4:46 PM 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
Mostly cloudy, with a low around 30. Southwest wind 3 to 8 mph.
Mostly sunny, with a high near 57. South wind around 3 mph.
Partly cloudy, with a low around 33.
Mostly sunny, with a high near 55.
Mostly cloudy, with a low around 28.
Patchy fog before 7am. Partly sunny, with a high near 52.
Mostly cloudy, with a low around 31.
Mostly sunny, with a high near 55.
Partly cloudy, with a low around 32.
Mostly sunny, with a high near 57.
Partly cloudy, with a low around 34.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Nov 6
|
Patchy Fog then Mostly Sunny
|
49°F |
3 mph
WSW
|
|
Friday Night
Nov 6
|
Mostly Cloudy
|
30°F |
3 to 8 mph
SW
|
|
Saturday
Nov 7
|
Mostly Sunny
|
57°F |
3 mph
S
|
|
Saturday Night
Nov 7
|
Partly Cloudy
|
33°F |
2 to 13 mph
S
|
|
Sunday
Nov 8
|
Mostly Sunny
|
55°F |
7 to 14 mph
WSW
|
|
Sunday Night
Nov 8
|
Mostly Cloudy
|
28°F |
0 to 7 mph
WNW
|
|
Monday
Nov 9
|
Patchy Fog then Partly Sunny
|
52°F |
2 mph
WSW
|
|
Monday Night
Nov 9
|
Mostly Cloudy
|
31°F |
3 mph
WSW
|
|
Tuesday
Nov 10
|
Mostly Sunny
|
55°F |
3 to 7 mph
SW
|
|
Tuesday Night
Nov 10
|
Partly Cloudy
|
32°F |
3 to 7 mph
SW
|
|
Veterans Day
Nov 11
|
Mostly Sunny
|
57°F |
5 mph
S
|
|
Wednesday Night
Nov 11
|
Partly Cloudy
|
34°F |
2 to 10 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Garrison.