Granite, MT Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Granite, MT in one place.
Mostly sunny, with a high near 61. West southwest wind 1 to 5 mph.
Local Weather Overview
This forecast page for Granite, 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: Sep 14, 2026 9:22 PM MDT.
The active forecast window currently covers Sep 15 to Sep 21, 2026 for Granite, MT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 15 to Sep 21, 2026
- Latest sync
- Sep 14, 2026 9:22 PM MDT
- Forecast office
- MSO
- Source
- NOAA / NWS
Daily Outlook
This Week in Granite
Thursday looks like the warmest upcoming period in Granite at 69 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 35 degrees F.
The strongest winds are forecast for Tuesday at about 1 to 5 mph WSW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 14, 2026 9:22 PM MDT
- 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
Patchy fog after 4am. Mostly cloudy, with a low around 35. North northeast wind 0 to 5 mph.
Patchy fog between 7am and 8am. Sunny, with a high near 62. North northeast wind 0 to 3 mph.
Mostly clear, with a low around 38. East wind around 5 mph.
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 69. Chance of precipitation is 40%.
Showers and thunderstorms before midnight, then a chance of rain. Mostly cloudy, with a low around 43. New rainfall amounts less than a tenth of an inch possible.
A chance of rain before noon, then showers and thunderstorms likely. Mostly cloudy, with a high near 61. New rainfall amounts between a quarter and half of an inch possible.
A chance of showers and thunderstorms before midnight, then a slight chance of rain. Mostly cloudy, with a low around 39.
A chance of rain. Partly sunny, with a high near 61.
Mostly clear, with a low around 39.
Sunny, with a high near 64.
Mostly clear, with a low around 40.
Sunny, with a high near 67.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Sep 15
|
Mostly Sunny
|
61°F |
1 to 5 mph
WSW
|
|
Tuesday Night
Sep 15
|
Mostly Cloudy then Patchy Fog
|
35°F |
0 to 5 mph
NNE
|
|
Wednesday
Sep 16
|
Patchy Fog then Sunny
|
62°F |
0 to 3 mph
NNE
|
|
Wednesday Night
Sep 16
|
Mostly Clear
|
38°F |
5 mph
E
|
|
Thursday
Sep 17
|
Mostly Sunny then Chance Showers And Thunderstorms
|
69°F |
2 mph
SSW
|
|
Thursday Night
Sep 17
|
Showers And Thunderstorms then Chance Light Rain
|
43°F |
2 mph
SSE
|
|
Friday
Sep 18
|
Chance Light Rain then Showers And Thunderstorms Likely
|
61°F |
2 mph
W
|
|
Friday Night
Sep 18
|
Chance Showers And Thunderstorms then Slight Chance Light Rain
|
39°F |
3 mph
WSW
|
|
Saturday
Sep 19
|
Chance Light Rain
|
61°F |
5 mph
WSW
|
|
Saturday Night
Sep 19
|
Mostly Clear
|
39°F |
3 mph
WSW
|
|
Sunday
Sep 20
|
Sunny
|
64°F |
2 mph
WSW
|
|
Sunday Night
Sep 20
|
Mostly Clear
|
40°F |
3 mph
SE
|
|
Monday
Sep 21
|
Sunny
|
67°F |
3 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Granite.
Nearby forecast pages are not available for this location yet.