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Weather & Climate in Silesia, MT

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

Silesia experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 26°F in January while summers reach 73°F in July. The area gets 311 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 14.8 inches (drier than the 38-inch national average). The area receives 48.2 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 3,395 feet.

Temperature

26°F Jan (-3°C) 73°F Jul (23°C)
Annual Average48.0°F
11% below US avg
January Average26°F (-3°C)
July Average73°F (23°C)
Sunny Days311 days/yr

Geography

Elevation3,395 ft (1,035 m)
Area1.8 sq mi (4.7 km²)
Population Density5/sq mi
Coordinates45.5490°N, 108.8376°W
TimezoneAmerica/Denver
CountyYellowstone County County
Nearest AirportBillings Logan International (BIL)
23 miles away

Precipitation & Snow

Annual Rainfall 14.8"
61% below US avg
Snowfall 48.2"
Wettest Month (May) 2.68"
Driest Month (Feb) 0.51"

Air Quality

AQI Median26.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Moderate
Risk Score83.6 / 100
Social Vulnerability20.3 / 100
Community Resilience82.3 / 100

Hazard Breakdown

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

Earthquake History

45 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.2.

May 11, 2022 36 km S of Silver Gate, Montana M4.2 133 km 14 km
Mar 25, 2008 35 km S of Silver Gate, Montana M4.2 133 km 4 km
Jan 30, 2023 9 km NNW of Livingston, Montana M3.8 139 km 20 km
Jan 9, 2003 23 km E of Wilsall, Montana M3.7 129 km 11 km
Jul 6, 2021 27 km SSE of Melstone, Montana M3.6 124 km 10 km
Mar 4, 2019 35 km SSW of Silver Gate, Montana M3.3 136 km 6 km
Jan 9, 2009 42 km SSW of Silver Gate, Montana M3.3 147 km 7 km
Aug 16, 1992 47 km S of Silver Gate, Montana M3.2 141 km 5 km
Jul 21, 2023 Eastern Montana M3.2 6 km 5 km
Jul 3, 1994 25 km ESE of Mammoth, Wyoming M3.2 144 km 11 km
Nov 9, 2009 40 km SW of Silver Gate, Montana M3.1 147 km 6 km
Aug 8, 2003 36 km S of Silver Gate, Montana M2.9 133 km 4 km
Nov 6, 1998 36 km S of Silver Gate, Montana M2.9 132 km 15 km
May 3, 2013 35 km S of Silver Gate, Montana M2.9 135 km 5 km
Feb 28, 2007 44 km SSW of Silver Gate, Montana M2.9 150 km 2 km
Mar 30, 2017 38 km S of Silver Gate, Montana M2.9 133 km 13 km
Jan 27, 2009 41 km SSW of Silver Gate, Montana M2.8 147 km 6 km
Mar 23, 2023 8 km S of Shell, Wyoming M2.8 148 km 11 km
Jul 22, 2016 21 km W of Cody, Wyoming M2.8 117 km 7 km
Jan 6, 2019 34 km SW of Silver Gate, Montana M2.8 141 km 9 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

44 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 3 injuries.

Date Rating Distance Path Fatalities
Jun 16, 1965 EF3 38 km 20.6 mi 0
Jun 20, 2010 EF2 40 km 0.7 mi 0
Jun 16, 2010 EF2 43 km 1.0 mi 0
Jul 11, 1978 EF2 98 km 0.4 mi 0
Jun 26, 1964 EF2 89 km 1.0 mi 0
Jul 2, 1958 EF2 39 km 0.5 mi 0
May 21, 2016 EF1 97 km 2.0 mi 0
Jun 22, 1996 EF1 99 km 4.0 mi 0
Jul 9, 1991 EF1 98 km 0.1 mi 0
Jun 21, 1991 EF1 34 km 0.2 mi 0
May 18, 1991 EF1 89 km 0.2 mi 0
May 24, 1990 EF1 56 km 0.2 mi 0
May 24, 1990 EF1 51 km 0.2 mi 0
Jul 24, 1981 EF1 88 km 0.1 mi 0
Jun 18, 1978 EF1 92 km 0.1 mi 0
Jun 26, 1976 EF1 87 km 2.0 mi 0
Aug 22, 1965 EF1 95 km 1.5 mi 0
Aug 12, 1958 EF1 17 km 0.5 mi 0
Jul 6, 1955 EF1 56 km 2.0 mi 0
May 24, 2014 EF0 76 km 0.8 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Nearby Volcanoes

1 volcano within 200 km. Closest: Yellowstone (190 km).

Name Type Elevation Last Eruption Distance
Yellowstone Caldera(s) 2,805 m (9,203 ft) -1350 190 km
Source: Smithsonian Institution Global Volcanism Program (GVP).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: DERBY (200,993 acres, 2006).

Year Name Acres Burned Distance
2006 DERBY 200,993 76 km
1984 HAWK CREEK 157,778 90 km
2008 DUNN MTN. ASSIST 105,494 90 km
2006 BUNDY RAILROAD 91,575 96 km
2003 HOBBLE 38,365 71 km
2021 ROBERTSON DRAW 31,132 60 km
2020 BOBCAT 31,020 92 km
2012 DAHL 21,448 84 km
1996 SHEPARD MTN 17,379 70 km
1994 BLACK BUTTE 10,231 87 km
2008 CASCADE 10,017 66 km
2010 STUMP GULCH 8,873 42 km
1996 COLFAX 8,429 81 km
2021 TROUT CREEK 7,804 64 km
2011 HOLE IN THE WALL 6,559 72 km
2006 BIRTHDAY2 6,553 77 km
2017 MICROWAVE 5,958 81 km
2003 DEEP LAKE 5,466 82 km
1996 LASTSTAND 5,385 84 km
2002 COW CREEK 5,162 20 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 26°F (-3°C) 0.7 in
February 30°F (-1°C) 0.5 in Driest
March 37°F (3°C) 1.0 in
April 46°F (8°C) 1.7 in
May 55°F (13°C) 2.7 in Wettest
June 64°F (18°C) 2.0 in
July 73°F (23°C) 1.0 in Warmest
August 69°F (21°C) 1.0 in
September 59°F (15°C) 1.5 in
October 48°F (9°C) 1.2 in
November 34°F (1°C) 0.7 in
December 26°F (-3°C) 0.6 in Coldest

Silesia has a seasonal temperature swing of 47°F / from 26°F in December to 73°F in July. Total annual precipitation is 14.4 inches, with May being the wettest month (2.7") and February the driest (0.5").

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