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Acton, MT Weather Forecast

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Acton, MT Weather Forecast

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Acton MT weather - Clear - 70°F
Clear
70°F
Updated 9:18 pm
Feels Like 60°F
Humidity 24%
Wind N 0 mph
Barometer  30.12 in
Dew Point 32°F
Acton MT weather - Clear - 21°C
Clear
21°C
Updated 9:18 pm
Feels Like 15°C
Humidity 24%
Wind N 0 km/h
Barometer  101.9 kPa
Dew Point 0°C
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Acton Weather Forecast

TONIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY
Acton, MT Weather - Tonight Mostly Clear Acton, MT Weather - Thursday Sunny Acton, MT Weather - Thursday Night Mostly Clear Acton, MT Weather - Friday Mostly Sunny Acton, MT Weather - Friday Night Chance Of Showers Acton, MT Weather - Saturday Mostly Cloudy Acton, MT Weather - Saturday Night Chance Of T-Storm Acton, MT Weather - Sunday Chance Of T-Storm Acton, MT Weather - Sunday Night Chance Of Showers Acton, MT Weather - Monday Mostly Sunny Acton, MT Weather - Monday Night Mostly Clear Acton, MT Weather - Tuesday Mostly Sunny
Mostly Clear Sunny Mostly Clear Mostly Sunny Chance of Showers Mostly Cloudy Chance of T-Storm Chance of T-Storm Chance of Showers Mostly Sunny Mostly Clear Mostly Sunny
Lo: 51°FLo: 11°C Hi: 89°FHi: 32°C
 Lo: 51°FLo: 11°C Hi: 70°FHi: 21°C
 Lo: 49°FLo: 9°C Hi: 65°FHi: 18°C
 Lo: 45°FLo: 7°C Hi: 61°FHi: 16°C
 Lo: 41°FLo: 5°C Hi: 69°FHi: 21°C
 Lo: 41°FLo: 5°C Hi: 69°FHi: 21°C
POP: 20% POP: 50% POP: 50% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 350 PM MDT Wed Sep 09 2026 Acton, MT Weather - WeatherWorld.com

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Issued: 1238 PM MDT Wed Sep 9 2026

Key Messages

  • Elevated to critical fire weather conditions through Thursday. Winds will be strongest over the foothills west of Billings.
  • A pattern change with cooler temps and an increased chance of precipitation Friday into the weekend, including mountain snow.
  • Moderate chance (40-60%) for foothills locations to see their first fall frost Monday morning.

Discussion

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The rest of today through Tuesday...

Unseasonably warm, dry, and breezy conditions continue into Thursday, bringing elevated to crit...