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Smiley Slough, MT Weather Forecast

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Smiley Slough, MT Weather Forecast

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Smiley Slough MT weather - Clear - 47°F
Clear
47°F
Updated 11:03 pm
Feels Like 54°F
Humidity 60%
Wind S 3 mph
Barometer  30.17 in
Dew Point 34°F
Smiley Slough MT weather - Clear - 8°C
Clear
8°C
Updated 11:03 pm
Feels Like 12°C
Humidity 60%
Wind S 5 km/h
Barometer  102.1 kPa
Dew Point 1°C
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Smiley Slough Weather Forecast

TONIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY
Smiley Slough, MT Weather - Tonight Mostly Cloudy Smiley Slough, MT Weather - Friday Patchy Fog Smiley Slough, MT Weather - Friday Night Patchy Fog Smiley Slough, MT Weather - Saturday Mostly Sunny Smiley Slough, MT Weather - Saturday Night Mostly Clear Smiley Slough, MT Weather - Sunday Sunny Smiley Slough, MT Weather - Sunday Night Mostly Clear Smiley Slough, MT Weather - Monday Mostly Sunny Smiley Slough, MT Weather - Monday Night Mostly Clear Smiley Slough, MT Weather - Tuesday Mostly Sunny Smiley Slough, MT Weather - Tuesday Night Partly Cloudy Smiley Slough, MT Weather - Wednesday Partly Cloudy
Mostly Cloudy Patchy Fog Patchy Fog Mostly Sunny Mostly Clear Sunny Mostly Clear Mostly Sunny Mostly Clear Mostly Sunny Partly Cloudy Partly Cloudy
Lo: 40°FLo: 4°C Hi: 70°FHi: 21°C
 Lo: 45°FLo: 7°C Hi: 75°FHi: 24°C
 Lo: 40°FLo: 4°C Hi: 76°FHi: 24°C
 Lo: 45°FLo: 7°C Hi: 76°FHi: 24°C
 Lo: 45°FLo: 7°C Hi: 75°FHi: 24°C
 Lo: 40°FLo: 4°C Hi: 75°FHi: 24°C
POP = Probability of Precipitation.
Weather Outlook Updated: 206 PM MDT Thu Oct 01 2026 Smiley Slough, MT Weather - WeatherWorld.com

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Smiley Slough Forecast Discussion

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Issued: 102 PM MDT Thu Oct 1 2026

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KEY MESSAGES:
  • Warming and drying trend Friday through Sunday; cool/cold valley lows with patchy frost.
  • Westerly winds increase Friday afternoon and Monday with passing disturbances.

Zonal flow aloft will yield to a building high-pressure ridge across the Northern Rockies Friday through Saturday. This will initiate a warming and drying trend, with daytime high temperatures rising roughly 10 to 15 degrees (or more) above seasonal averages this weekend. Strong nocturnal radiational cool...