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Weather & Climate in Twin Hills Colony, MT

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

Twin Hills Colony has a cool climate with an average annual temperature of 45°F (7°C). Winters average 24°F in January while summers reach 68°F in July. The area gets 274 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 12.5 inches (drier than the 38-inch national average). The area receives 42.5 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 3,306 feet.

Temperature

24°F Jan (-5°C) 68°F Jul (20°C)
Annual Average45.1°F
16% below US avg
January Average24°F (-5°C)
July Average68°F (20°C)
Sunny Days274 days/yr

Geography

Elevation3,306 ft (1,008 m)
Area0.4 sq mi (1.0 km²)
Population Density59/sq mi
Coordinates48.0168°N, 111.0698°W
TimezoneAmerica/Denver
CountyLiberty County County
Nearest AirportGreat Falls International (GTF)
39 miles away

Precipitation & Snow

Annual Rainfall 12.5"
67% below US avg
Snowfall 42.5"
Wettest Month (Jun) 2.40"
Driest Month (Feb) 0.35"

Air Quality

AQI Median26.0
RatingGood

Natural Hazard Risk

Overall RiskVery Low
Risk Score6.3 / 100
Social Vulnerability63.7 / 100
Community Resilience17.5 / 100

Hazard Breakdown

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

Earthquake History

32 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.9.

Aug 16, 1994 27 km W of Chester, Montana M3.9 56 km 5 km
Jun 5, 1991 18 km SW of Shelby, Montana M3.6 80 km 5 km
May 10, 1990 47 km SSW of Heart Butte, Montana M3.6 148 km 5 km
Jan 20, 2003 10 km S of Little Browning, Montana M3.5 110 km 1 km
Jan 1, 1993 20 km WSW of Sweet Grass, Montana M3.4 128 km 5 km
Aug 11, 1992 27 km W of Augusta, Montana M3.4 140 km 5 km
Nov 6, 2002 3 km SSE of Little Browning, Montana M3.4 114 km 1 km
Mar 5, 1995 2 km NW of Cut Bank, Montana M3.3 118 km 10 km
Jun 16, 1999 16 km SSE of Craig, Montana M3.2 137 km 4 km
May 29, 2009 11 km S of Little Browning, Montana M3.2 109 km 0 km
Apr 4, 1990 4 km WNW of Santa Rita, Montana M3.1 124 km 6 km
Apr 2, 2014 13 km NNW of Conrad, Montana M3.1 77 km 7 km
Jun 9, 2009 20 km NNW of Santa Rita, Montana M3.0 139 km 23 km
Jan 20, 2025 26 km WSW of Augusta, Montana M3.0 141 km 30 km
Jan 6, 2014 28 km W of Augusta, Montana M3.0 141 km 27 km
Jan 1, 2025 28 km ENE of Helena Valley Northeast, Montana M2.9 145 km 20 km
Sep 13, 2012 14 km NE of Helena Valley Northwest, Montana M2.9 148 km 9 km
Oct 28, 2013 18 km SW of Heart Butte, Montana M2.9 147 km 21 km
Apr 11, 2010 33 km ENE of Helena Valley Northeast, Montana M2.8 135 km 18 km
May 6, 2014 10 km SSW of Cascade, Montana M2.8 106 km 13 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

43 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 7 injuries.

Date Rating Distance Path Fatalities
Jul 5, 1988 EF3 98 km 3.0 mi 0
Jul 5, 1988 EF3 87 km 10.0 mi 0
Jul 5, 1988 EF3 81 km 12.0 mi 0
Jul 3, 1998 EF1 61 km 0.5 mi 0
Jun 19, 1998 EF1 56 km 1.0 mi 0
Jul 5, 1988 EF1 76 km 0.2 mi 0
Jun 1, 1980 EF1 28 km 0.1 mi 0
May 25, 1980 EF1 60 km 0.1 mi 0
May 25, 1980 EF1 75 km 0.1 mi 0
Jul 3, 1978 EF1 83 km 1.0 mi 0
Jul 3, 1978 EF1 83 km 1.0 mi 0
Jul 3, 1978 EF1 83 km 1.0 mi 0
Jun 1, 1977 EF1 80 km 0.1 mi 0
May 24, 1977 EF1 65 km 0.1 mi 0
Jul 10, 1965 EF1 31 km 0.2 mi 0
Jul 2, 1964 EF1 84 km 27.0 mi 0
Jun 22, 1962 EF1 77 km 0.1 mi 0
Jun 29, 1961 EF1 69 km 0.1 mi 0
Jun 29, 1960 EF1 61 km 0.3 mi 0
Jun 23, 2018 EF0 48 km 1.4 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: MEISSNER (12,318 acres, 2009).

Year Name Acres Burned Distance
2009 MEISSNER 12,318 88 km
1984 CENTENNIAL 11,775 99 km
1993 FREEZEOUT LAKE 9,793 90 km
1988 LOSTCANYON 4,532 97 km
2008 CHOUTEAU CO COMPLEX 4,365 48 km
2019 STUCKEY RD MA 4,073 53 km
1991 POWER 3,822 51 km
2008 UNIT 3 MARSH HAZ FUEL REDUCTION 3,333 44 km
2020 EAGLE ROCK ROAD 3,129 88 km
2022 BENTON LAKE UNIT 3 AND 4B 2,996 43 km
2007 CHOUTEAU CO ASST 2,646 54 km
2022 MTBLR-FY22-RX 2,244 45 km
2007 2007 HAZ FUEL REDUCTION 2,159 63 km
2021 FOUR SISTERS 1,999 82 km
2021 EAGLE BUTTE 1,817 81 km
2005 H RX F COMPLEX BROADCAST BURNS 1,747 42 km
2021 BENTON LAKE UNIT 5 1,716 44 km
2023 MTBLR-HFR-FY23-RX 1,507 45 km
2018 MTBLR-18-RX-WUI 1,433 45 km
1992 POWER 1,290 55 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 24°F (-5°C) 0.6 in Coldest
February 25°F (-4°C) 0.4 in Driest
March 34°F (1°C) 0.8 in
April 44°F (7°C) 1.2 in
May 54°F (12°C) 2.3 in
June 62°F (17°C) 2.4 in Wettest
July 68°F (20°C) 1.5 in Warmest
August 68°F (20°C) 1.5 in
September 57°F (14°C) 1.2 in
October 47°F (8°C) 0.7 in
November 32°F (0°C) 0.5 in
December 24°F (-4°C) 0.6 in

Twin Hills Colony has a seasonal temperature swing of 45°F / from 24°F in January to 68°F in July. Total annual precipitation is 13.4 inches, with June being the wettest month (2.4") and February the driest (0.4").

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