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Arrow Lake, MT Weather Forecast

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Arrow Lake, MT Weather Forecast

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Arrow Lake MT weather - Clear - 51°F
Clear
51°F
Updated 3:46 am
Feels Like 39°F
Humidity 37%
Wind SSW 9 mph
Barometer  30.28 in
Dew Point 26°F
Arrow Lake MT weather - Clear - 11°C
Clear
11°C
Updated 3:46 am
Feels Like 4°C
Humidity 37%
Wind SSW 14 km/h
Barometer  102.5 kPa
Dew Point -3°C
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Arrow Lake Weather Forecast

REST OF TONIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY
Arrow Lake, MT Weather - Rest Of Tonight Partly Cloudy Arrow Lake, MT Weather - Friday Mostly Sunny Arrow Lake, MT Weather - Friday Night Partly Cloudy Arrow Lake, MT Weather - Saturday Mostly Sunny Arrow Lake, MT Weather - Saturday Night Chance Of Rain Arrow Lake, MT Weather - Sunday Rain And Snow Arrow Lake, MT Weather - Sunday Night Snow Showers Arrow Lake, MT Weather - Monday Mostly Sunny Arrow Lake, MT Weather - Monday Night Mostly Clear Arrow Lake, MT Weather - Tuesday Mostly Clear Arrow Lake, MT Weather - Tuesday Night Partly Cloudy Arrow Lake, MT Weather - Wednesday Partly Cloudy
Partly Cloudy Mostly Sunny Partly Cloudy Mostly Sunny Chance of Rain Rain and Snow Snow Showers Mostly Sunny Mostly Clear Mostly Clear Partly Cloudy Partly Cloudy
Lo: 44°FLo: 7°C Hi: 66°FHi: 19°C
 Lo: 40°FLo: 4°C Hi: 66°FHi: 19°C
 Lo: 41°FLo: 5°C Hi: 53°FHi: 12°C
 Lo: 32°FLo: 0°C Hi: 52°FHi: 11°C
 Hi: 57°FHi: 14°C
Lo: 33°FLo: 1°C		 Hi: 57°FHi: 14°C
Lo: 33°FLo: 1°C		 Hi: 57°FHi: 14°C
Lo: 38°FLo: 3°C		 Hi: 57°FHi: 14°C
Lo: 38°FLo: 3°C
POP: 50% POP: 70% POP: 50%
POP = Probability of Precipitation.
Weather Outlook Updated: 1232 AM MDT Thu Sep 10 2026 Arrow Lake, MT Weather - WeatherWorld.com

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Arrow Lake Forecast Discussion

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Issued: 215 AM MDT Thu Sep 10 2026

Key Messages

  • Warm, dry and breezy today.
  • Next weather system arrives Friday, bringing cooler temperatures along with some periods of rain/mountain snowfall.
  • Another weather system brings even cooler temperatures and more widespread precipitation to Montana, with more chances for mountain snowfall.

Discussion

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  • Meteorological Overview:

    • In the wake of a series of upper level systems earlier this week, a weak ridge embedded in northwesterly flow will continue to bring a period of warmer but breezy we...