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Round Butte Reservoir, MT Weather Forecast

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Round Butte Reservoir, MT Weather Forecast

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Round Butte Reservoir MT weather - Clear - 67°F
Clear
67°F
Updated 12:20 am
Feels Like 59°F
Humidity 52%
Wind NNE 9 mph
Barometer  30.05 in
Dew Point 49°F
Round Butte Reservoir MT weather - Clear - 19°C
Clear
19°C
Updated 12:20 am
Feels Like 15°C
Humidity 52%
Wind NNE 14 km/h
Barometer  101.7 kPa
Dew Point 9°C
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Round Butte Reservoir Weather Forecast

TONIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY
Round Butte Reservoir, MT Weather - Tonight Increasing Clouds Round Butte Reservoir, MT Weather - Friday Mostly Sunny Round Butte Reservoir, MT Weather - Friday Night Partly Cloudy Round Butte Reservoir, MT Weather - Saturday Mostly Sunny Round Butte Reservoir, MT Weather - Saturday Night Chance Of Showers Round Butte Reservoir, MT Weather - Sunday Mostly Sunny Round Butte Reservoir, MT Weather - Sunday Night Chance Of T-Storm Round Butte Reservoir, MT Weather - Monday Mostly Sunny Round Butte Reservoir, MT Weather - Monday Night Partly Cloudy Round Butte Reservoir, MT Weather - Tuesday Mostly Sunny Round Butte Reservoir, MT Weather - Tuesday Night Partly Cloudy Round Butte Reservoir, MT Weather - Wednesday Mostly Sunny
Increasing Clouds Mostly Sunny Partly Cloudy Mostly Sunny Chance of Showers Mostly Sunny Chance of T-Storm Mostly Sunny Partly Cloudy Mostly Sunny Partly Cloudy Mostly Sunny
Lo: 61°FLo: 16°C Hi: 91°FHi: 33°C
 Lo: 61°FLo: 16°C Hi: 95°FHi: 35°C
 Lo: 65°FLo: 18°C Hi: 99°FHi: 37°C
 Lo: 65°FLo: 18°C Hi: 90°FHi: 32°C
 Lo: 59°FLo: 15°C Hi: 85°FHi: 29°C
 Lo: 59°FLo: 15°C Hi: 90°FHi: 32°C
POP: 20% POP: 30%
POP = Probability of Precipitation.
Weather Outlook Updated: 508 PM MDT Thu Aug 20 2026 Round Butte Reservoir, MT Weather - WeatherWorld.com

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Round Butte Reservoir Forecast Discussion

Issued: 539 PM MDT Thu Aug 20 2026

Key Messages

  • Hot and mostly dry today through Friday.
  • Weather system brings the chance of precipitation back to the region Saturday and Sunday. The risk of severe thunderstorms is low. Thunderstorms could produce heavy rainfall.
  • Drier with an occasional chance of precipitation next week.

Discussion

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Today through Wednesday...

Today and Friday will be hot and mostly dry as a ridge of high pressure builds in aloft. High temperatures during this time will be in the 80s a...