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Weather & Climate in Augusta, MT

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

Augusta has a cool climate with an average annual temperature of 45°F (7°C). Winters average 28°F in January while summers reach 67°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 15.5 inches (drier than the 38-inch national average). 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 4,074 feet.

Temperature

28°F Jan (-2°C) 67°F Jul (19°C)
Annual Average45.4°F
16% below US avg
January Average28°F (-2°C)
July Average67°F (19°C)
Sunny Days273 days/yr

Geography

Elevation4,074 ft (1,242 m)
Area0.9 sq mi (2.4 km²)
Population Density241/sq mi
Coordinates47.4893°N, 112.3922°W
TimezoneAmerica/Denver
CountyTeton County County
Nearest AirportGreat Falls International (GTF)
48 miles away

Precipitation & Snow

Annual Rainfall 15.5"
59% below US avg
Wettest Month (May) 2.60"
Driest Month (Feb) 0.55"

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

363 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 69 km 12 km
Jul 6, 2017 15 km S of Lincoln, Montana M5.0 78 km 15 km
Jul 6, 2017 14 km SE of Lincoln, Montana M4.4 71 km 10 km
Jan 30, 2016 19 km E of Lincoln, Montana M4.3 61 km 2 km
Apr 15, 1998 11 km NE of Swan Lake, Montana M4.1 117 km 4 km
Apr 8, 2000 8 km ENE of Townsend, Montana M4.1 148 km 5 km
Jul 19, 2002 43 km NE of Seeley Lake, Montana M4.0 50 km 25 km
Jul 17, 2017 12 km ESE of Lincoln, Montana M4.0 67 km 13 km
Jun 28, 2000 21 km SE of Clinton, Montana M4.0 130 km 10 km
Nov 10, 2000 14 km NE of Townsend, Montana M4.0 144 km 2 km
Apr 1, 1992 10 km ESE of Swan Lake, Montana M4.0 109 km 5 km
Jul 6, 2017 14 km SSE of Lincoln, Montana M4.0 74 km 9 km
Jun 2, 1996 37 km N of Ovando, Montana M3.9 52 km 5 km
Aug 16, 1994 27 km W of Chester, Montana M3.9 136 km 5 km
Oct 19, 2017 12 km SE of Lincoln, Montana M3.9 68 km 4 km
Apr 1, 1993 15 km E of Lincoln, Montana M3.9 60 km 5 km
Mar 13, 2017 4 km ESE of Avon, Montana M3.8 103 km 20 km
Jun 1, 1996 23 km N of Ovando, Montana M3.8 65 km 10 km
Jul 2, 1992 4 km SSE of South Browning, Montana M3.8 122 km 10 km
Apr 17, 2018 13 km ESE of Lincoln, Montana M3.8 67 km 14 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 96 km 0.1 mi 0
Jul 2, 1966 EF2 7 km 0.8 mi 0
Jul 3, 1998 EF1 64 km 0.5 mi 0
Jul 5, 1988 EF1 66 km 0.2 mi 0
Jul 3, 1978 EF1 69 km 1.0 mi 0
Jul 3, 1978 EF1 69 km 1.0 mi 0
Jul 3, 1978 EF1 69 km 1.0 mi 0
Jun 1, 1977 EF1 43 km 0.1 mi 0
Jul 2, 1964 EF1 32 km 27.0 mi 0
Jun 22, 1962 EF1 39 km 0.1 mi 0
Jun 29, 1961 EF1 98 km 0.1 mi 0
Aug 7, 1995 EF0 92 km 0.1 mi 0
Jun 21, 1993 EF0 69 km 0.1 mi 0
Jun 21, 1993 EF0 82 km 0.1 mi 0
Jul 9, 1992 EF0 74 km 0.1 mi 0
Jun 26, 1992 EF0 92 km 0.1 mi 0
Jun 29, 1986 EF0 65 km 0.2 mi 0
May 26, 1980 EF0 80 km 0.1 mi 0
Jul 24, 1963 EF0 82 km 0.5 mi 0
Jul 3, 1963 EF0 71 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 67 km
1988 CANYON CREEK 167,875 39 km
2015 BEAR CREEK 60,710 85 km
2007 FOOL CREEK 53,912 67 km
2015 FAMILY PEAK COMPLEX 49,769 94 km
2007 AHORN 45,633 43 km
1988 GATES PARK 42,493 54 km
2003 LINCOLN COMPLEX (SNOWBANK) 36,987 48 km
2003 LITTLE SALMON CREEK 33,044 71 km
2021 HARRIS MTN 31,792 68 km
2017 ALICE CREEK 29,971 39 km
2012 ELBOW PASS COMPLEX 28,989 39 km
2003 BARTLETT MOUNTAIN 27,614 64 km
1984 NORTH HILL 27,162 85 km
2007 CONGER CREEK 22,936 54 km
2000 MONTURE-SPREAD RIDGE (MONTURE) 22,493 64 km
2015 TRAIL CREEK 22,338 91 km
2017 SCALP 20,309 71 km
2007 MERIWETHER 18,865 80 km
2017 PARK CREEK 17,915 56 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 28°F (-2°C) 0.7 in
February 28°F (-2°C) 0.6 in Driest
March 35°F (1°C) 0.8 in
April 43°F (6°C) 1.3 in
May 52°F (11°C) 2.6 in Wettest
June 60°F (15°C) 2.3 in
July 67°F (19°C) 1.4 in Warmest
August 65°F (19°C) 1.5 in
September 55°F (13°C) 1.3 in
October 46°F (8°C) 0.8 in
November 33°F (0°C) 0.6 in
December 25°F (-4°C) 0.7 in Coldest

Augusta has a seasonal temperature swing of 42°F / from 25°F in December to 67°F in July. Total annual precipitation is 14.6 inches, with May being the wettest month (2.6") and February the driest (0.6").

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