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Harrison Lake, MT Weather Forecast

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Harrison Lake, MT Weather Forecast

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Harrison Lake MT weather - Clear - 54°F
Clear
54°F
Updated 8:48 am
Feels Like 53°F
Humidity 92%
Wind N 0 mph
Barometer  30.25 in
Dew Point 52°F
Harrison Lake MT weather - Clear - 12°C
Clear
12°C
Updated 8:48 am
Feels Like 12°C
Humidity 92%
Wind N 0 km/h
Barometer  102.4 kPa
Dew Point 11°C
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Harrison Lake Weather Forecast

TODAY TONIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT
Harrison Lake, MT Weather - Today Partly Cloudy Harrison Lake, MT Weather - Tonight Partly Cloudy Harrison Lake, MT Weather - Monday Mostly Cloudy Harrison Lake, MT Weather - Monday Night Mostly Cloudy Harrison Lake, MT Weather - Tuesday Partly Cloudy Harrison Lake, MT Weather - Tuesday Night Partly Cloudy Harrison Lake, MT Weather - Wednesday Mostly Sunny Harrison Lake, MT Weather - Wednesday Night Mostly Clear Harrison Lake, MT Weather - Thursday Mostly Sunny Harrison Lake, MT Weather - Thursday Night Mostly Clear Harrison Lake, MT Weather - Friday Partly Cloudy Harrison Lake, MT Weather - Friday Night Chance Of Rain
Partly Cloudy Partly Cloudy Mostly Cloudy Mostly Cloudy Partly Cloudy Partly Cloudy Mostly Sunny Mostly Clear Mostly Sunny Mostly Clear Partly Cloudy Chance of Rain
Hi: 75°FHi: 24°C
 Lo: 50°FLo: 10°C Hi: 75°FHi: 24°C
 Lo: 50°FLo: 10°C Hi: 75°FHi: 24°C
 Lo: 50°FLo: 10°C Hi: 75°FHi: 24°C
 Lo: 50°FLo: 10°C Hi: 76°FHi: 24°C
 Lo: 50°FLo: 10°C Hi: 76°FHi: 24°C
 Lo: 55°FLo: 13°C
POP: 20%
POP = Probability of Precipitation.
Weather Outlook Updated: 1223 AM MDT Sun Aug 16 2026 Harrison Lake, MT Weather - WeatherWorld.com

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Harrison Lake Forecast Discussion

Issued: 405 AM MDT Sun Aug 16 2026

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KEY MESSAGES:

  • Shower and thunderstorm activity will continue each afternoon through early next week.
  • Warming and drying latter part of next week under a ridge of high pressure.

Even though a ridge of high pressure is trying to build over the area today a very subtle disturbance will move through the region kicking off another round of showers and thunderstorms. The coverage is not to be as extensive as yesterday but these storms will still be capable of ...