Great Falls, MT Weather Forecast
Local 7-day forecast
Rain Showers Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Great Falls, MT in one place.
Rain showers likely before 3pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 79. Southwest wind around 8 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.
Local Weather Overview
This forecast page for Great Falls, 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: Aug 27, 2026 5:12 PM MDT.
The active forecast window currently covers Aug 29 to Sep 2, 2026 for Great Falls, MT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 29 to Sep 2, 2026
- Latest sync
- Aug 27, 2026 5:12 PM MDT
- Forecast office
- TFX
- Source
- NOAA / NWS
Daily Outlook
This Week in Great Falls
Tuesday looks like the warmest upcoming period in Great Falls at 84 degrees F.
Sunday Night is the coolest period ahead with temperatures near 46 degrees F.
The strongest winds are forecast for Sunday at about 7 to 21 mph WSW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 27, 2026 5:12 PM MDT
- Coverage
- 6 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
Showers and thunderstorms. Mostly cloudy, with a low around 50. South southwest wind 6 to 9 mph. Chance of precipitation is 80%.
Rain showers likely before noon, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 71. West southwest wind 7 to 21 mph, with gusts as high as 32 mph.
Mostly clear, with a low around 46. West southwest wind 10 to 18 mph, with gusts as high as 28 mph.
Sunny, with a high near 79.
Mostly clear, with a low around 49.
Sunny, with a high near 84.
A slight chance of rain showers before midnight. Partly cloudy, with a low around 51.
A slight chance of rain showers after noon. Mostly sunny, with a high near 80.
A slight chance of rain showers before midnight. Mostly cloudy, with a low around 50.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Rain Showers Likely
|
79°F |
8 mph
SW
|
|
Saturday Night
Aug 29
|
Showers And Thunderstorms
|
50°F |
6 to 9 mph
SSW
|
|
Sunday
Aug 30
|
Rain Showers Likely
|
71°F |
7 to 21 mph
WSW
|
|
Sunday Night
Aug 30
|
Mostly Clear
|
46°F |
10 to 18 mph
WSW
|
|
Monday
Aug 31
|
Sunny
|
79°F |
7 to 10 mph
WSW
|
|
Monday Night
Aug 31
|
Mostly Clear
|
49°F |
5 to 8 mph
S
|
|
Tuesday
Sep 1
|
Sunny
|
84°F |
5 to 8 mph
SW
|
|
Tuesday Night
Sep 1
|
Slight Chance Rain Showers then Partly Cloudy
|
51°F |
10 mph
SSW
|
|
Wednesday
Sep 2
|
Mostly Sunny then Slight Chance Rain Showers
|
80°F |
7 to 14 mph
WSW
|
|
Wednesday Night
Sep 2
|
Slight Chance Rain Showers then Mostly Cloudy
|
50°F |
8 to 13 mph
WSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Great Falls.
