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Weather & Climate in Upper Witter Gulch, CO

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

Upper Witter Gulch has a cool climate with an average annual temperature of 45°F (7°C). Winters average 28°F in January while summers reach 65°F in July. The area gets 330 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 18.6 inches (drier than the 38-inch national average). The area receives 80.8 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 8,273 feet.

Temperature

28°F Jan (-2°C) 65°F Jul (18°C)
Annual Average44.7°F
17% below US avg
January Average28°F (-2°C)
July Average65°F (18°C)
Sunny Days330 days/yr

Geography

Elevation8,273 ft (2,522 m)
Area0.9 sq mi (2.4 km²)
Population Density646/sq mi
Coordinates39.6611°N, 105.4268°W
TimezoneAmerica/Denver
CountyJefferson County County
Nearest AirportDenver International (DEN)
42 miles away

Precipitation & Snow

Annual Rainfall 18.6"
51% below US avg
Snowfall 80.8"
Wettest Month (Jul) 2.52"
Driest Month (Jan) 0.79"

Air Quality

AQI Median41.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively High
Risk Score94.9 / 100
Social Vulnerability11.4 / 100
Community Resilience66.9 / 100

Hazard Breakdown

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

Earthquake History

34 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 67 km 10 km
Dec 23, 1995 7 km WNW of Rock Creek Park, Colorado M3.5 112 km 5 km
Aug 21, 2012 12 km SSW of Gypsum, Colorado M3.4 134 km 5 km
Jan 18, 1997 8 km SE of Westcreek, Colorado M3.3 68 km 5 km
Jun 1, 2014 9 km NNW of Kersey, Colorado M3.2 114 km 1 km
Jul 22, 2001 6 km WNW of Woodland Park, Colorado M3.1 76 km 5 km
Jan 26, 2008 12 km NE of Cotopaxi, Colorado M3.1 136 km 5 km
Jul 8, 1993 9 km ENE of Aspen, Colorado M3.1 121 km 5 km
Feb 7, 2000 19 km NE of Steamboat Springs, Colorado M3.0 148 km 5 km
Sep 12, 1990 13 km NW of Silverthorne, Colorado M3.0 67 km 5 km
Jan 1, 2003 6 km SE of Aspen, Colorado M2.9 128 km 5 km
Jan 19, 1997 8 km SE of Westcreek, Colorado M2.9 68 km 5 km
Feb 26, 2008 29 km WNW of Westcreek, Colorado M2.9 43 km 2 km
Mar 30, 2019 7 km NE of Greeley, Colorado M2.9 112 km 6 km
Apr 12, 2015 5 km NE of Aspen, Colorado M2.8 125 km 5 km
Oct 13, 2002 13 km S of Norrie, Colorado M2.8 117 km 5 km
Apr 11, 2021 9 km E of Woody Creek, Colorado M2.8 123 km 2 km
Dec 31, 1995 6 km WNW of Rock Creek Park, Colorado M2.8 114 km 5 km
Jan 19, 1997 8 km SE of Westcreek, Colorado M2.7 68 km 5 km
Jun 21, 2018 16 km SSW of Walden, Colorado M2.7 132 km 2 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

489 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 1 fatality, 153 injuries.

Date Rating Distance Path Fatalities
Jun 4, 2015 EF3 72 km 6.7 mi 0
May 22, 2008 EF3 86 km 38.7 mi 1
Jun 15, 1988 EF3 43 km 2.5 mi 0
Jun 12, 1982 EF3 79 km 3.0 mi 0
Jun 13, 1977 EF3 89 km 4.9 mi 0
May 18, 1975 EF3 62 km 4.1 mi 0
Jun 7, 2021 EF2 70 km 7.5 mi 0
Jun 8, 2014 EF2 76 km 6.0 mi 0
Jun 15, 2009 EF2 83 km 4.0 mi 0
Jul 13, 1996 EF2 89 km 12.0 mi 0
Jun 15, 1988 EF2 43 km 0.5 mi 0
Jun 5, 1988 EF2 44 km 0.5 mi 0
Jun 5, 1988 EF2 54 km 2.0 mi 0
Jul 2, 1987 EF2 64 km 1.0 mi 0
Jun 20, 1987 EF2 70 km 1.0 mi 0
Jun 8, 1986 EF2 46 km 1.1 mi 0
Jun 8, 1986 EF2 73 km 2.0 mi 0
Jul 19, 1985 EF2 50 km 0.5 mi 0
May 18, 1984 EF2 93 km 5.0 mi 0
May 18, 1984 EF2 89 km 5.0 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: EAST TROUBLESOME (188,924 acres, 2020).

Year Name Acres Burned Distance
2020 EAST TROUBLESOME 188,924 80 km
2002 HAYMAN 129,417 51 km
2012 WALDO CANYON 20,112 92 km
2020 WILLIAMS FORK 14,679 52 km
2018 WESTON PASS 13,169 87 km
2013 BLACK FOREST 11,885 93 km
1996 BUFFALO CREEK 11,690 35 km
2000 BOBCAT 10,444 91 km
2020 CALWOOD 9,836 56 km
2000 HIGH MEADOWS 9,607 30 km
2001 MVD PSFRXASST 4 7,375 54 km
2021 MARSHALL 6,286 39 km
2010 FOURMILE CANYON 5,865 44 km
2002 BIG ELK 4,348 70 km
2012 LOWER NORTH FORK FIRE 3,436 31 km
2003 OVERLAND 3,232 53 km
2009 OLD STAGE 3,160 49 km
2002 SCHOONOVER 2,821 50 km
2012 FERN LAKE 2,549 80 km
2020 SUNDAY FIRE 2,204 92 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 28°F (-2°C) 0.8 in Driest
February 25°F (-4°C) 0.8 in
March 29°F (-2°C) 1.3 in
April 35°F (2°C) 1.8 in
May 45°F (7°C) 2.1 in
June 54°F (12°C) 1.9 in
July 65°F (18°C) 2.5 in Warmest, Wettest
August 57°F (14°C) 2.4 in
September 50°F (10°C) 1.5 in
October 41°F (5°C) 1.2 in
November 30°F (-1°C) 1.0 in
December 25°F (-4°C) 1.0 in Coldest

Upper Witter Gulch has a seasonal temperature swing of 40°F / from 25°F in December to 65°F in July. Total annual precipitation is 18.3 inches, with July being the wettest month (2.5") and January the driest (0.8").

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