Simms, MT Weather Forecast

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Simms MT weather  - Lightning Observed - 60°F
Lightning Observed
60°F
Updated 10:55 pm
Feels Like 56°F
Humidity 77%
Wind E 13 mph
Barometer  29.98 in
Dew Point 53°F
Simms MT weather  - Lightning Observed - 16°C
Lightning Observed
16°C
Updated 10:55 pm
Feels Like 13°C
Humidity 77%
Wind E 21 km/h
Barometer  101.5 kPa
Dew Point 12°C

Simms Weather Forecast

REST OF TONIGHT LABOR DAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY
Simms, MT Weather - Rest Of Tonight Chance Of T-Storm Simms, MT Weather - Labor Day Chance Of T-Storm Simms, MT Weather - Monday Night Chance Of Showers Simms, MT Weather - Tuesday Chance Of Showers Simms, MT Weather - Tuesday Night Clearing Simms, MT Weather - Wednesday Sunny Simms, MT Weather - Wednesday Night Windy Simms, MT Weather - Thursday Windy Simms, MT Weather - Thursday Night Chance Of Showers Simms, MT Weather - Friday Chance Of Showers Simms, MT Weather - Friday Night Chance Of Showers Simms, MT Weather - Saturday Chance Of Showers
Chance of T-Storm Chance of T-Storm Chance of Showers Chance of Showers Clearing Sunny Windy Windy Chance of Showers Chance of Showers Chance of Showers Chance of Showers
Lo: 51°FLo: 11°C Hi: 61°FHi: 16°C
Lo: 45°FLo: 7°C Hi: 61°FHi: 16°C
Lo: 41°FLo: 5°C Hi: 75°FHi: 24°C
Hi: 79°FHi: 26°C
Lo: 51°FLo: 11°C
Hi: 79°FHi: 26°C
Lo: 51°FLo: 11°C
Lo: 49°FLo: 9°C Hi: 61°FHi: 16°C
Lo: 40°FLo: 4°C Hi: 55°FHi: 13°C
Lo: 39°FLo: 4°C
POP: 100% POP: 100% POP: 50% POP: 70% POP: 40% POP: 30% POP: 40% POP: 50%
POP = Probability of Precipitation.
Weather Outlook Updated: 1012 PM MDT Sun Sep 06 2026 Simms, MT Weather - WeatherWorld.com

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Issued: 550 PM MDT Sun Sep 6 2026

Key Messages

  • Scattered to widespread showers and thunderstorms develop this evening along and north of Highway 200, with isolated large hail possible.
  • Periods of widespread rainfall Monday and Tuesday, with periods of moderate to heavy rainfall across Rocky Mountain Front and Sweet Grass Hills.
  • Drier conditions Wednesday and Thursday.
  • Another round of precipitation for next weekend.

Discussion

... /Issued 218 PM MDT Sun Sep 6 2026/
  • Meteorological Overview:
  • A passing shortwave will develop scattered ...