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Weather & Climate in Gunbarrel, CO

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

Gunbarrel experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 29°F in January while summers reach 73°F in July. The area gets 316 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 15.2 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 5,279 feet.

Temperature

29°F Jan (-1°C) 73°F Jul (23°C)
Annual Average50.0°F
7% below US avg
January Average29°F (-1°C)
July Average73°F (23°C)
Sunny Days316 days/yr

Geography

Elevation5,279 ft (1,609 m)
Area6.3 sq mi (16.3 km²)
Population Density1,668/sq mi
Coordinates40.0632°N, 105.1717°W
TimezoneAmerica/Denver
CountyBoulder County County
Nearest AirportNorthern Colorado Regional (FNL)
28 miles away

Precipitation & Snow

Annual Rainfall 15.2"
60% below US avg
Wettest Month (May) 2.72"
Driest Month (Jan) 0.59"

Air Quality

AQI Median41.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Moderate
Risk Score90.7 / 100
Social Vulnerability11.4 / 100
Community Resilience91.2 / 100

Hazard Breakdown

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

Earthquake History

18 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.0.

Dec 25, 1994 9 km NE of Larkspur, Colorado M4.0 91 km 10 km
Dec 23, 1995 7 km WNW of Rock Creek Park, Colorado M3.5 150 km 5 km
Jan 18, 1997 8 km SE of Westcreek, Colorado M3.3 107 km 5 km
Jun 1, 2014 9 km NNW of Kersey, Colorado M3.2 66 km 1 km
Jul 22, 2001 6 km WNW of Woodland Park, Colorado M3.1 116 km 5 km
Feb 7, 2000 19 km NE of Steamboat Springs, Colorado M3.0 140 km 5 km
Sep 12, 1990 13 km NW of Silverthorne, Colorado M3.0 97 km 5 km
Mar 30, 2019 7 km NE of Greeley, Colorado M2.9 64 km 6 km
Feb 26, 2008 29 km WNW of Westcreek, Colorado M2.9 91 km 2 km
Jan 19, 1997 8 km SE of Westcreek, Colorado M2.9 107 km 5 km
Apr 30, 2008 3 km SW of Steamboat Springs, Colorado M2.8 150 km 5 km
Feb 8, 2007 6 km S of Steamboat Springs, Colorado M2.7 148 km 5 km
Jun 13, 2025 7 km SE of Erie, Colorado M2.7 18 km 9 km
Apr 18, 1998 8 km SE of Westcreek, Colorado M2.7 107 km 5 km
Jan 19, 1997 8 km SE of Westcreek, Colorado M2.7 107 km 5 km
Jun 21, 2018 16 km SSW of Walden, Colorado M2.7 118 km 2 km
Aug 23, 2016 2 km SSE of Eaton, Colorado M2.6 63 km 10 km
Feb 9, 2000 21 km NNE of Steamboat Springs, Colorado M2.5 148 km 5 km
Jun 23, 2014 6 km NNE of Kersey, Colorado M2.5 68 km 5 km
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.

Tornado History

662 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 1 fatality, 159 injuries.

Date Rating Distance Path Fatalities
Jun 4, 2015 EF3 22 km 6.7 mi 0
May 22, 2008 EF3 40 km 38.7 mi 1
Jun 15, 1988 EF3 42 km 2.5 mi 0
Jun 12, 1982 EF3 61 km 3.0 mi 0
May 18, 1975 EF3 48 km 4.1 mi 0
May 15, 1952 EF3 59 km 7.4 mi 0
Jun 7, 2021 EF2 24 km 7.5 mi 0
May 7, 2016 EF2 87 km 8.8 mi 0
Jul 31, 1996 EF2 69 km 5.0 mi 0
Jul 13, 1996 EF2 72 km 12.0 mi 0
Jun 9, 1990 EF2 75 km 23.0 mi 0
Jun 15, 1988 EF2 42 km 0.5 mi 0
Jun 5, 1988 EF2 19 km 2.0 mi 0
Jun 5, 1988 EF2 15 km 0.5 mi 0
Jul 7, 1987 EF2 78 km 5.0 mi 0
Jul 2, 1987 EF2 43 km 1.0 mi 0
Jun 20, 1987 EF2 57 km 1.0 mi 0
Jun 8, 1986 EF2 45 km 1.1 mi 0
Jun 8, 1986 EF2 55 km 2.0 mi 0
Jul 19, 1985 EF2 65 km 0.5 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: CAMERON PEAK (208,910 acres, 2020).

Year Name Acres Burned Distance
2020 CAMERON PEAK 208,910 70 km
2020 EAST TROUBLESOME 188,924 73 km
2002 HAYMAN 129,417 94 km
2012 HIGH PARK 90,769 68 km
2020 WILLIAMS FORK 14,679 74 km
1996 BUFFALO CREEK 11,690 77 km
2000 BOBCAT 10,444 47 km
2020 CALWOOD 9,836 17 km
2000 HIGH MEADOWS 9,607 75 km
2004 PICNIC ROCK 9,014 73 km
2001 MVD PSFRXASST 4 7,375 93 km
2021 MARSHALL 6,286 12 km
2010 FOURMILE CANYON 5,865 18 km
2002 BIG ELK 4,348 33 km
2012 LOWER NORTH FORK FIRE 3,436 68 km
2003 OVERLAND 3,232 17 km
2009 OLD STAGE 3,160 10 km
2011 CRYSTAL FIRE 2,855 56 km
2002 SCHOONOVER 2,821 92 km
2012 FERN LAKE 2,549 53 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 29°F (-1°C) 0.6 in Coldest, Driest
February 33°F (1°C) 0.6 in
March 39°F (4°C) 1.7 in
April 46°F (8°C) 2.3 in
May 56°F (13°C) 2.7 in Wettest
June 65°F (18°C) 1.9 in
July 73°F (23°C) 1.9 in Warmest
August 69°F (21°C) 1.6 in
September 61°F (16°C) 1.6 in
October 50°F (10°C) 1.2 in
November 37°F (3°C) 1.2 in
December 31°F (-0°C) 0.7 in

Gunbarrel has a seasonal temperature swing of 44°F / from 29°F in January to 73°F in July. Total annual precipitation is 17.9 inches, with May being the wettest month (2.7") and January the driest (0.6").

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