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Weather & Climate in Gilman, MT

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

Gilman has a cool climate with an average annual temperature of 44°F (7°C). Winters average 25°F in January while summers reach 65°F in July. The area gets 273 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 11.9 inches (drier than the 38-inch national average). The area receives 47.5 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 26 / among the cleanest air in the country. The city sits at an elevation of 4,000 feet.

Temperature

25°F Jan (-4°C) 65°F Jul (18°C)
Annual Average43.8°F
19% below US avg
January Average25°F (-4°C)
July Average65°F (18°C)
Sunny Days273 days/yr

Geography

Elevation4,000 ft (1,219 m)
Area0.7 sq mi (1.7 km²)
Population Density26/sq mi
Coordinates47.5093°N, 112.3578°W
TimezoneAmerica/Denver
CountyTeton County County
Nearest AirportGreat Falls International (GTF)
46 miles away

Precipitation & Snow

Annual Rainfall 11.9"
69% below US avg
Snowfall 47.5"
Wettest Month (May) 2.56"
Driest Month (Feb) 0.47"

Air Quality

AQI Median26.0
RatingGood

Natural Hazard Risk

Overall RiskVery Low
Risk Score19.0 / 100
Social Vulnerability21.3 / 100
Community Resilience57.6 / 100

Hazard Breakdown

Tornado Very Low
Earthquake Very Low
Wildfire Relatively Low
Flood Very Low
Hail Very Low
Strong Wind Very Low
Heat Wave Very Low
Winter Weather Relatively Moderate
Lightning Very Low
Ice Storm Very Low
Drought Relatively Low
Cold Wave Relatively Moderate
Landslide Very Low
Avalanche Relatively Moderate
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

358 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.8.

Jul 6, 2017 11 km SE of Lincoln, Montana M5.8 72 km 12 km
Jul 6, 2017 15 km S of Lincoln, Montana M5.0 81 km 15 km
Jul 6, 2017 14 km SE of Lincoln, Montana M4.4 74 km 10 km
Jan 30, 2016 19 km E of Lincoln, Montana M4.3 63 km 2 km
Apr 8, 2000 8 km ENE of Townsend, Montana M4.1 148 km 5 km
Apr 15, 1998 11 km NE of Swan Lake, Montana M4.1 118 km 4 km
Jul 19, 2002 43 km NE of Seeley Lake, Montana M4.0 53 km 25 km
Jul 6, 2017 14 km SSE of Lincoln, Montana M4.0 77 km 9 km
Jul 17, 2017 12 km ESE of Lincoln, Montana M4.0 70 km 13 km
Jun 28, 2000 21 km SE of Clinton, Montana M4.0 133 km 10 km
Nov 10, 2000 14 km NE of Townsend, Montana M4.0 145 km 2 km
Apr 1, 1992 10 km ESE of Swan Lake, Montana M4.0 111 km 5 km
Aug 16, 1994 27 km W of Chester, Montana M3.9 133 km 5 km
Oct 19, 2017 12 km SE of Lincoln, Montana M3.9 71 km 4 km
Apr 1, 1993 15 km E of Lincoln, Montana M3.9 62 km 5 km
Jun 2, 1996 37 km N of Ovando, Montana M3.9 55 km 5 km
Mar 13, 2017 4 km ESE of Avon, Montana M3.8 105 km 20 km
Jun 1, 1996 23 km N of Ovando, Montana M3.8 69 km 10 km
Apr 17, 2018 13 km ESE of Lincoln, Montana M3.8 70 km 14 km
Jul 5, 2024 24 km ENE of Seeley Lake, Montana M3.8 68 km 22 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

23 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2.

Date Rating Distance Path Fatalities
Jun 30, 1975 EF2 95 km 0.1 mi 0
Jul 2, 1966 EF2 5 km 0.8 mi 0
Jul 3, 1998 EF1 61 km 0.5 mi 0
Jul 5, 1988 EF1 64 km 0.2 mi 0
Jul 3, 1978 EF1 68 km 1.0 mi 0
Jul 3, 1978 EF1 68 km 1.0 mi 0
Jul 3, 1978 EF1 68 km 1.0 mi 0
Jun 1, 1977 EF1 40 km 0.1 mi 0
Jul 2, 1964 EF1 29 km 27.0 mi 0
Jun 22, 1962 EF1 36 km 0.1 mi 0
Jun 29, 1961 EF1 95 km 0.1 mi 0
Aug 7, 1995 EF0 95 km 0.1 mi 0
Jun 21, 1993 EF0 70 km 0.1 mi 0
Jun 21, 1993 EF0 80 km 0.1 mi 0
Jul 9, 1992 EF0 77 km 0.1 mi 0
Jun 26, 1992 EF0 88 km 0.1 mi 0
Jun 29, 1986 EF0 63 km 0.2 mi 0
May 26, 1980 EF0 77 km 0.1 mi 0
Jul 24, 1963 EF0 80 km 0.5 mi 0
Jul 3, 1963 EF0 68 km 0.1 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: RICE RIDGE (171,473 acres, 2017).

Year Name Acres Burned Distance
2017 RICE RIDGE 171,473 70 km
1988 CANYON CREEK 167,875 42 km
2015 BEAR CREEK 60,710 87 km
2007 FOOL CREEK 53,912 67 km
2015 FAMILY PEAK COMPLEX 49,769 93 km
2007 AHORN 45,633 46 km
1988 GATES PARK 42,493 55 km
2003 LINCOLN COMPLEX (SNOWBANK) 36,987 51 km
2003 LITTLE SALMON CREEK 33,044 73 km
2021 HARRIS MTN 31,792 68 km
2017 ALICE CREEK 29,971 41 km
2012 ELBOW PASS COMPLEX 28,989 42 km
2003 BARTLETT MOUNTAIN 27,614 66 km
1984 NORTH HILL 27,162 86 km
2007 CONGER CREEK 22,936 58 km
2000 MONTURE-SPREAD RIDGE (MONTURE) 22,493 68 km
2015 TRAIL CREEK 22,338 92 km
2017 SCALP 20,309 72 km
2007 MERIWETHER 18,865 80 km
2017 PARK CREEK 17,915 59 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 25°F (-4°C) 0.6 in Coldest
February 29°F (-2°C) 0.5 in Driest
March 35°F (2°C) 0.6 in
April 44°F (6°C) 1.1 in
May 53°F (11°C) 2.6 in Wettest
June 61°F (16°C) 2.4 in
July 65°F (18°C) 1.4 in
August 66°F (19°C) 1.5 in Warmest
September 56°F (13°C) 1.3 in
October 46°F (8°C) 0.8 in
November 33°F (1°C) 0.6 in
December 26°F (-3°C) 0.6 in

Gilman has a seasonal temperature swing of 41°F / from 25°F in January to 66°F in August. Total annual precipitation is 13.8 inches, with May being the wettest month (2.6") and February the driest (0.5").

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