Grant, MT Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Grant, MT in one place.
Sunny, with a high near 71. North northeast wind 1 to 9 mph.
Local Weather Overview
This forecast page for Grant, 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 Grant, 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
- TFX
- Source
- NOAA / NWS
Daily Outlook
This Week in Grant
Thursday looks like the warmest upcoming period in Grant at 75 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 38 degrees F.
The strongest winds are forecast for Wednesday Night at about 1 to 15 mph ENE.
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
- TFX
- Radar station
- KSFX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 38. West wind 1 to 7 mph.
Sunny, with a high near 71. East southeast wind 0 to 12 mph, with gusts as high as 20 mph.
Partly cloudy, with a low around 42. East northeast wind 1 to 15 mph, with gusts as high as 22 mph.
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 75. Southeast wind 2 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 50%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 44. South wind 3 to 14 mph, with gusts as high as 20 mph.
A chance of rain showers before noon, then a chance of showers and thunderstorms. Partly sunny, with a high near 69. Southwest wind 2 to 8 mph.
A chance of rain showers. Partly cloudy, with a low around 39.
A slight chance of rain showers before noon, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 70.
Partly cloudy, with a low around 39.
Sunny, with a high near 72.
Mostly clear, with a low around 40.
Sunny, with a high near 74.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Sep 15
|
Sunny
|
71°F |
1 to 9 mph
NNE
|
|
Tuesday Night
Sep 15
|
Partly Cloudy
|
38°F |
1 to 7 mph
W
|
|
Wednesday
Sep 16
|
Sunny
|
71°F |
0 to 12 mph
ESE
|
|
Wednesday Night
Sep 16
|
Partly Cloudy
|
42°F |
1 to 15 mph
ENE
|
|
Thursday
Sep 17
|
Mostly Sunny then Chance Showers And Thunderstorms
|
75°F |
2 to 10 mph
SE
|
|
Thursday Night
Sep 17
|
Showers And Thunderstorms Likely
|
44°F |
3 to 14 mph
S
|
|
Friday
Sep 18
|
Chance Rain Showers
|
69°F |
2 to 8 mph
SW
|
|
Friday Night
Sep 18
|
Chance Rain Showers
|
39°F |
3 to 9 mph
W
|
|
Saturday
Sep 19
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
70°F |
2 to 8 mph
WSW
|
|
Saturday Night
Sep 19
|
Partly Cloudy
|
39°F |
2 to 9 mph
W
|
|
Sunday
Sep 20
|
Sunny
|
72°F |
1 to 7 mph
WSW
|
|
Sunday Night
Sep 20
|
Mostly Clear
|
40°F |
1 to 9 mph
W
|
|
Monday
Sep 21
|
Sunny
|
74°F |
1 to 9 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grant.