Harrison, MT Weather Forecast
Local 7-day forecast
Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Harrison, MT in one place.
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 93. South southwest wind 3 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Local Weather Overview
This forecast page for Harrison, 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: Jul 26, 2026 3:56 PM MDT.
The active forecast window currently covers Jul 26 to Aug 1, 2026 for Harrison, MT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 26 to Aug 1, 2026
- Latest sync
- Jul 26, 2026 3:56 PM MDT
- Forecast office
- TFX
- Source
- NOAA / NWS
Daily Outlook
This Week in Harrison
Saturday looks like the warmest upcoming period in Harrison at 99 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Saturday Night at about 2 to 12 mph WSW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 26, 2026 3:56 PM MDT
- Coverage
- 8 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
A slight chance of showers and thunderstorms before 7pm, then patchy smoke. Partly cloudy, with a low around 63. West southwest wind 1 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
Patchy smoke before 3pm. Sunny, with a high near 93. West wind 0 to 9 mph, with gusts as high as 20 mph.
Areas of smoke after 7pm. Partly cloudy, with a low around 61. West southwest wind 1 to 8 mph, with gusts as high as 18 mph.
Areas of smoke before 7am. Sunny, with a high near 92. Northwest wind 0 to 5 mph.
Mostly clear, with a low around 61. Southwest wind 2 to 8 mph, with gusts as high as 20 mph.
Sunny, with a high near 91. West northwest wind 0 to 6 mph, with gusts as high as 18 mph.
Mostly clear, with a low around 60. West southwest wind 2 to 9 mph, with gusts as high as 20 mph.
Sunny, with a high near 92.
Mostly clear, with a low around 61.
Sunny, with a high near 95.
Mostly clear, with a low around 63.
Sunny, with a high near 99.
Mostly clear, with a low around 61.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Jul 26
|
Slight Chance Showers And Thunderstorms
|
93°F |
3 to 8 mph
SSW
|
|
Tonight
Jul 26
|
Slight Chance Showers And Thunderstorms then Patchy Smoke
|
63°F |
1 to 8 mph
WSW
|
|
Monday
Jul 27
|
Patchy Smoke
|
93°F |
0 to 9 mph
W
|
|
Monday Night
Jul 27
|
Areas Of Smoke
|
61°F |
1 to 8 mph
WSW
|
|
Tuesday
Jul 28
|
Areas Of Smoke then Sunny
|
92°F |
0 to 5 mph
NW
|
|
Tuesday Night
Jul 28
|
Mostly Clear
|
61°F |
2 to 8 mph
SW
|
|
Wednesday
Jul 29
|
Sunny
|
91°F |
0 to 6 mph
WNW
|
|
Wednesday Night
Jul 29
|
Mostly Clear
|
60°F |
2 to 9 mph
WSW
|
|
Thursday
Jul 30
|
Sunny
|
92°F |
0 to 7 mph
WSW
|
|
Thursday Night
Jul 30
|
Mostly Clear
|
61°F |
2 to 8 mph
WSW
|
|
Friday
Jul 31
|
Sunny
|
95°F |
0 to 6 mph
WNW
|
|
Friday Night
Jul 31
|
Mostly Clear
|
63°F |
1 to 8 mph
SSW
|
|
Saturday
Aug 1
|
Sunny
|
99°F |
0 to 8 mph
WSW
|
|
Saturday Night
Aug 1
|
Mostly Clear
|
61°F |
2 to 12 mph
WSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Harrison.