Sweet Grass, MT Weather Forecast
Local 7-day forecast
Partly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Sweet Grass, MT in one place.
Partly cloudy. Low around 38, with temperatures rising to around 41 overnight. Southwest wind around 12 mph.
Local Weather Overview
This forecast page for Sweet Grass, 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 Sweet Grass, 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
- TFX
- Source
- NOAA / NWS
Daily Outlook
This Week in Sweet Grass
Veterans Day looks like the warmest upcoming period in Sweet Grass at 64 degrees F.
Friday Night is the coolest period ahead with temperatures near 34 degrees F.
The strongest winds are forecast for Veterans Day at about 12 to 16 mph SW.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Nov 11, 2026 1:36 AM MST
- Coverage
- 7 days
- Time zone
- America/Denver
- Forecast office
- TFX
- Radar station
- KTFX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly sunny. High near 64, with temperatures falling to around 57 in the afternoon. Southwest wind 12 to 16 mph, with gusts as high as 25 mph.
Mostly cloudy, with a low around 40. South southwest wind around 13 mph, with gusts as high as 18 mph.
Mostly cloudy, with a high near 60. South wind around 12 mph.
Mostly cloudy, with a low around 37. South southwest wind around 9 mph.
Partly sunny, with a high near 53. South wind around 12 mph.
Mostly cloudy, with a low around 34. South wind around 12 mph, with gusts as high as 18 mph.
Mostly sunny, with a high near 52. South wind around 12 mph.
Partly cloudy, with a low around 34.
Mostly sunny, with a high near 53.
Partly cloudy, with a low around 34.
Partly sunny, with a high near 52.
Mostly cloudy, with a low around 34.
A slight chance of rain after 5pm. Partly sunny, with a high near 46.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Nov 11
|
Partly Cloudy
|
38°F |
12 mph
SW
|
|
Veterans Day
Nov 11
|
Mostly Sunny
|
64°F |
12 to 16 mph
SW
|
|
Wednesday Night
Nov 11
|
Mostly Cloudy
|
40°F |
13 mph
SSW
|
|
Thursday
Nov 12
|
Mostly Cloudy
|
60°F |
12 mph
S
|
|
Thursday Night
Nov 12
|
Mostly Cloudy
|
37°F |
9 mph
SSW
|
|
Friday
Nov 13
|
Partly Sunny
|
53°F |
12 mph
S
|
|
Friday Night
Nov 13
|
Mostly Cloudy
|
34°F |
12 mph
S
|
|
Saturday
Nov 14
|
Mostly Sunny
|
52°F |
12 mph
S
|
|
Saturday Night
Nov 14
|
Partly Cloudy
|
34°F |
12 mph
SSW
|
|
Sunday
Nov 15
|
Mostly Sunny
|
53°F |
10 to 15 mph
SW
|
|
Sunday Night
Nov 15
|
Partly Cloudy
|
34°F |
12 mph
SW
|
|
Monday
Nov 16
|
Partly Sunny
|
52°F |
9 mph
SW
|
|
Monday Night
Nov 16
|
Mostly Cloudy
|
34°F |
7 mph
SW
|
|
Tuesday
Nov 17
|
Partly Sunny then Slight Chance Light Rain
|
46°F |
7 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sweet Grass.