Gregson, MT Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Gregson, MT in one place.
Sunny, with a high near 67. North northeast wind 1 to 7 mph.
Local Weather Overview
This forecast page for Gregson, 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 9:20 PM MDT.
The active forecast window currently covers Sep 16 to Sep 21, 2026 for Gregson, MT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 21, 2026
- Latest sync
- Sep 14, 2026 9:20 PM MDT
- Forecast office
- MSO
- Source
- NOAA / NWS
Daily Outlook
This Week in Gregson
Thursday looks like the warmest upcoming period in Gregson at 74 degrees F.
Saturday Night is the coolest period ahead with temperatures near 43 degrees F.
The strongest winds are forecast for Wednesday Night at about 3 to 8 mph ESE.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 14, 2026 9:20 PM MDT
- Coverage
- 6 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 clear, with a low around 44. East southeast wind 3 to 8 mph.
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 74. Chance of precipitation is 30%.
Showers and thunderstorms before midnight, then a chance of rain. Mostly cloudy, with a low around 48. 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 67. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of rain. Mostly cloudy, with a low around 45.
A chance of rain. Partly sunny, with a high near 66.
Mostly clear, with a low around 43.
Sunny, with a high near 70.
Mostly clear, with a low around 44.
Sunny, with a high near 72.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 16
|
Sunny
|
67°F |
1 to 7 mph
NNE
|
|
Wednesday Night
Sep 16
|
Mostly Clear
|
44°F |
3 to 8 mph
ESE
|
|
Thursday
Sep 17
|
Mostly Sunny then Chance Showers And Thunderstorms
|
74°F |
3 to 8 mph
S
|
|
Thursday Night
Sep 17
|
Showers And Thunderstorms then Chance Light Rain
|
48°F |
7 mph
SW
|
|
Friday
Sep 18
|
Chance Light Rain then Showers And Thunderstorms Likely
|
67°F |
6 mph
WNW
|
|
Friday Night
Sep 18
|
Chance Light Rain
|
45°F |
6 mph
WNW
|
|
Saturday
Sep 19
|
Chance Light Rain
|
66°F |
3 to 7 mph
W
|
|
Saturday Night
Sep 19
|
Mostly Clear
|
43°F |
8 mph
W
|
|
Sunday
Sep 20
|
Sunny
|
70°F |
2 to 6 mph
NW
|
|
Sunday Night
Sep 20
|
Mostly Clear
|
44°F |
7 mph
NW
|
|
Monday
Sep 21
|
Sunny
|
72°F |
5 to 8 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Gregson.