| National Weather Service Forecast for:
Helena MT Issued by: National Weather Service Great Falls, MT |
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| Updated: 1:52 am MDT Jun 30, 2026 | ||||||||||||||||||
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| Today |
A 40 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 72. West southwest wind 3 to 6 mph. |
| Tonight |
A chance of showers and thunderstorms before 11pm, then showers likely between 11pm and midnight. Mostly cloudy, with a low around 50. Southwest wind 3 to 5 mph. Chance of precipitation is 60%. |
| Wednesday |
Showers and thunderstorms likely, mainly before 3pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 72. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 70%. |
| Wednesday Night |
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Cloudy during the early evening, then gradual clearing, with a low around 49. South southwest wind 3 to 5 mph. Chance of precipitation is 50%. |
| Thursday |
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 75. Calm wind becoming west southwest 5 to 7 mph in the afternoon. Winds could gust as high as 18 mph. |
| Thursday Night |
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 51. Southwest wind 3 to 6 mph. Chance of precipitation is 30%. |
| Friday |
A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 76. Calm wind becoming west around 6 mph in the afternoon. |
| Friday Night |
Partly cloudy, with a low around 50. Southwest wind 3 to 6 mph. |
| Independence Day |
Sunny, with a high near 80. |
| Saturday Night |
Mostly clear, with a low around 53. |
| Sunday |
Sunny, with a high near 85. |
| Sunday Night |
Mostly clear, with a low around 57. |
| Monday |
A slight chance of showers and thunderstorms. Sunny, with a high near 86. |
Forecast from NOAA-NWS for Helena MT.