Weather Alert
Grass Range Weather Warning NWS WEATHER ALERT FOR THE GRASS RANGE, MT AREA - DENSE FOG ADVISORY Issued: 1130 AM MDT Sat Oct 31 2026 Grass Range Weather Warning

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Grass Range, MT Weather Forecast

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Grass Range, MT Weather Forecast

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Grass Range MT weather - Overcast - 44°F
Overcast
44°F
Updated 4:16 pm
Feels Like 49°F
Humidity 77%
Wind N 0 mph
Barometer  29.98 in
Dew Point 37°F
Grass Range MT weather - Overcast - 7°C
Overcast
7°C
Updated 4:16 pm
Feels Like 10°C
Humidity 77%
Wind N 0 km/h
Barometer  101.5 kPa
Dew Point 3°C
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Grass Range Weather Forecast

REST OF TODAY TONIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY THURSDAY FRIDAY
Grass Range, MT Weather - Rest Of Today Patchy Fog Grass Range, MT Weather - Tonight Patchy Fog Grass Range, MT Weather - Sunday Chance Of Rain Grass Range, MT Weather - Sunday Night Rain Grass Range, MT Weather - Monday Chance Of Rain Grass Range, MT Weather - Monday Night Mostly Clear Grass Range, MT Weather - Tuesday Mostly Sunny Grass Range, MT Weather - Tuesday Night Partly Cloudy Grass Range, MT Weather - Wednesday Partly Cloudy Grass Range, MT Weather - Thursday Partly Cloudy Grass Range, MT Weather - Friday Partly Cloudy
Patchy Fog Patchy Fog Chance of Rain Rain Chance of Rain Mostly Clear Mostly Sunny Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy
Hi: 40°FHi: 4°C
 Lo: 35°FLo: 2°C Hi: 45°FHi: 7°C
 Lo: 40°FLo: 4°C Hi: 45°FHi: 7°C
 Lo: 29°FLo: -2°C Hi: 59°FHi: 15°C
 Lo: 35°FLo: 2°C Hi: 54°FHi: 12°C
Lo: 35°FLo: 2°C		 Hi: 54°FHi: 12°C
Lo: 35°FLo: 2°C		 Hi: 54°FHi: 12°C
Lo: 35°FLo: 2°C
POP: 50% POP: 100% POP: 20%
POP = Probability of Precipitation.
Weather Outlook Updated: 1232 PM MDT Sat Oct 31 2026 Grass Range, MT Weather - WeatherWorld.com

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Issued: 1220 PM MDT Sat Oct 31 2026

Key Messages

  • Periods of dense fog and even some isolated instances of icing over elevated surfaces will continue through Sunday morning, most widespread over central and north-central Montana.
  • Precipitation becomes more widespread by Sunday, with accumulating snow most prevalent over the higher terrain of southwest Montana Sunday night into Monday morning.
  • Temperatures trend closer to average next week.

Discussion

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  • Meteorological Overview:

    • Low level easterly flow continues to support low stratus ...