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Potomac, MT Weather Forecast

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Potomac, MT Weather Forecast

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Potomac MT weather - Clear - 63°F
Clear
63°F
Updated 8:40 pm
Feels Like 55°F
Humidity 50%
Wind N 14 mph
Barometer  29.96 in
Dew Point 44°F
Potomac MT weather - Clear - 17°C
Clear
17°C
Updated 8:40 pm
Feels Like 13°C
Humidity 50%
Wind N 23 km/h
Barometer  101.5 kPa
Dew Point 7°C
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Potomac Weather Forecast

TONIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY
Potomac, MT Weather - Tonight Patchy Fog Potomac, MT Weather - Saturday Patchy Fog Potomac, MT Weather - Saturday Night Chance Of Showers Potomac, MT Weather - Sunday Chance Of T-Storm Potomac, MT Weather - Sunday Night Chance Of Showers Potomac, MT Weather - Monday Chance Of Showers Potomac, MT Weather - Monday Night Mostly Clear Potomac, MT Weather - Tuesday Partly Cloudy Potomac, MT Weather - Tuesday Night Partly Cloudy Potomac, MT Weather - Wednesday Chance Of Rain Potomac, MT Weather - Wednesday Night Mostly Clear Potomac, MT Weather - Thursday Mostly Sunny
Patchy Fog Patchy Fog Chance of Showers Chance of T-Storm Chance of Showers Chance of Showers Mostly Clear Partly Cloudy Partly Cloudy Chance of Rain Mostly Clear Mostly Sunny
Lo: 36°FLo: 2°C Hi: 65°FHi: 18°C
 Lo: 40°FLo: 4°C Hi: 56°FHi: 13°C
 Lo: 36°FLo: 2°C Hi: 55°FHi: 13°C
 Lo: 36°FLo: 2°C Hi: 56°FHi: 13°C
 Lo: 36°FLo: 2°C Hi: 60°FHi: 16°C
 Lo: 36°FLo: 2°C Hi: 66°FHi: 19°C
POP: 30% POP: 80% POP: 90% POP: 70% POP: 20%
POP = Probability of Precipitation.
Weather Outlook Updated: 1257 PM MDT Fri Sep 11 2026 Potomac, MT Weather - WeatherWorld.com

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Issued: 1229 PM MDT Fri Sep 11 2026

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KEY MESSAGES:
  • Easterly gap winds during the overnights through Sunday morning: choppy lakes and strong canyon winds.
  • Widespread rain and mountain snow above 7,000 feet late Saturday night, through Sunday, into Monday.
  • Drying and warming conditions by mid-week.

Isolated showers will continue over high terrain east of Highway 93 this afternoon before diminishing. An easterly surface pressure gradient will build tonight and persist through Sunday morning, generating east-to-northeast wi...