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Grass Range, MT Weather Forecast
Grass Range, MT Weather Forecast Date: 1132 AM MST Thu Nov 05 2026
The area/counties/county of: Fergus County Below 4500ft, including the cities of: Hilger and Lewistown.or toggle through each period.
Rest of Today... Sunny. Highs in the mid 50s. West winds up to 10 mph. Gusts up to 30 mph in the afternoon.
Tonight... Mostly cloudy in the evening then clearing. Lows in the lower 30s. West winds 5 to 15 mph with gusts to around 30 mph.
Friday... Sunny. Highs in the mid 50s. Southwest winds 5 to 10 mph. Gusts up to 30 mph in the afternoon.
Friday Night... Partly cloudy. Near steady temperature in the mid 40s. Southwest winds 10 to 15 mph with gusts to around 45 mph.
Saturday... Partly sunny in the morning then clearing. Highs in the lower 60s. West winds 5 to 15 mph. Gusts up to 45 mph Decreasing to 30 mph in the afternoon.
Saturday Night... Mostly clear. Lows in the lower 40s.
Sunday... Mostly sunny. Highs in the mid 60s.
Sunday Night... Mostly cloudy. Lows in the upper 30s.
Monday... Cooler. Mostly sunny. Highs in the lower 50s.
Monday Night... Mostly cloudy. Lows in the upper 30s.
Tuesday... Partly sunny in the morning then clearing. Highs in the lower 60s.
Tuesday Night... Mostly clear. Lows in the lower 40s. Highs in the lower 60s.
POP = Probability of Precipitation
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