Helena, MT Weather Forecast
Local 7-day forecast
Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Helena, MT in one place.
Rain showers likely before noon, then showers and thunderstorms. Cloudy, with a high near 73. Southwest wind 3 to 7 mph. Chance of precipitation is 80%.
Local Weather Overview
This forecast page for Helena, 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 5:11 PM MDT.
The active forecast window currently covers Aug 29 to Sep 2, 2026 for Helena, MT.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 29 to Sep 2, 2026
- Latest sync
- Aug 27, 2026 5:11 PM MDT
- Forecast office
- TFX
- Source
- NOAA / NWS
Daily Outlook
This Week in Helena
Tuesday looks like the warmest upcoming period in Helena at 78 degrees F.
Sunday Night is the coolest period ahead with temperatures near 48 degrees F.
The strongest winds are forecast for Sunday at about 6 to 14 mph W.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 27, 2026 5:11 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. Cloudy, with a low around 52. West wind around 5 mph. Chance of precipitation is 90%.
A chance of showers and thunderstorms before noon, then a chance of showers and thunderstorms. Partly sunny, with a high near 67. West wind 6 to 14 mph, with gusts as high as 25 mph.
Mostly clear, with a low around 48. West southwest wind 7 to 13 mph, with gusts as high as 23 mph.
Sunny, with a high near 74.
Mostly clear, with a low around 53.
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 78.
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 53.
A slight chance of rain showers after noon. Mostly sunny, with a high near 74.
A slight chance of rain showers before midnight. Mostly cloudy, with a low around 53.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Showers And Thunderstorms
|
73°F |
3 to 7 mph
SW
|
|
Saturday Night
Aug 29
|
Showers And Thunderstorms
|
52°F |
5 mph
W
|
|
Sunday
Aug 30
|
Chance Showers And Thunderstorms
|
67°F |
6 to 14 mph
W
|
|
Sunday Night
Aug 30
|
Mostly Clear
|
48°F |
7 to 13 mph
WSW
|
|
Monday
Aug 31
|
Sunny
|
74°F |
2 to 7 mph
WSW
|
|
Monday Night
Aug 31
|
Mostly Clear
|
53°F |
3 to 7 mph
WSW
|
|
Tuesday
Sep 1
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
78°F |
2 to 7 mph
S
|
|
Tuesday Night
Sep 1
|
Chance Showers And Thunderstorms then Mostly Cloudy
|
53°F |
8 mph
WSW
|
|
Wednesday
Sep 2
|
Mostly Sunny then Slight Chance Rain Showers
|
74°F |
5 to 10 mph
WSW
|
|
Wednesday Night
Sep 2
|
Slight Chance Rain Showers then Mostly Cloudy
|
53°F |
6 to 9 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Helena.
