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Weather & Climate in New Castle, CO

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

New Castle experiences four distinct seasons with an average annual temperature of 46°F (8°C). Winters average 24°F in January while summers reach 70°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 12.8 inches (drier than the 38-inch national average). The area receives 26.8 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 5,825 feet.

Temperature

24°F Jan (-5°C) 70°F Jul (21°C)
Annual Average46.4°F
14% below US avg
January Average24°F (-5°C)
July Average70°F (21°C)
Sunny Days330 days/yr

Geography

Elevation5,825 ft (1,775 m)
Area2.7 sq mi (7.0 km²)
Population Density1,951/sq mi
Coordinates39.5776°N, 107.5265°W
TimezoneAmerica/Denver
CountyGarfield County County
Nearest AirportEagle County Regional (EGE)
33 miles away

Precipitation & Snow

Annual Rainfall 12.8"
66% below US avg
Snowfall 26.8"
Wettest Month (Oct) 1.50"
Driest Month (Feb) 1.06"

Air Quality

AQI Median41.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Low
Risk Score64.5 / 100
Social Vulnerability15.4 / 100
Community Resilience12.3 / 100

Hazard Breakdown

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

Earthquake History

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

Mar 20, 1995 10 km NNW of Rangely, Colorado M4.5 132 km -3 km
Jan 31, 2002 28 km SSW of Craig, Colorado M4.3 80 km 5 km
May 20, 1995 434km E of Wendover, Utah M4.1 140 km 4 km
Aug 9, 2001 11 km NNE of Chacra, Colorado M4.0 16 km 5 km
Feb 10, 2006 1 km NNE of Chacra, Colorado M3.8 8 km 5 km
Apr 22, 2017 4 km NW of Rangely, Colorado M3.8 127 km 7 km
Aug 18, 2009 19 km N of Craig, Colorado M3.7 124 km 5 km
Apr 20, 2017 24 km NE of Maybell, Colorado M3.5 126 km 13 km
Jun 6, 2011 17 km NNW of Oak Creek, Colorado M3.5 103 km 5 km
May 13, 1993 10 km NW of Rangely, Colorado M3.5 134 km -3 km
Dec 10, 1999 11 km NE of Dinosaur, Colorado M3.5 143 km 8 km
Apr 10, 2011 12 km N of Oak Creek, Colorado M3.4 103 km 5 km
Aug 21, 2012 12 km SSW of Gypsum, Colorado M3.4 47 km 5 km
Nov 3, 1994 30 km W of Meeker, Colorado M3.4 82 km 5 km
Jan 30, 2017 5 km SW of New Castle, Colorado M3.3 7 km 5 km
May 3, 2017 4 km NW of Rangely, Colorado M3.3 127 km 7 km
Apr 3, 2025 34 km W of Delta, Colorado M3.2 126 km 5 km
Apr 1, 1995 13 km S of Dinosaur, Colorado M3.2 143 km 0 km
Feb 1, 2019 3 km NW of Glenwood Springs, Colorado M3.1 15 km 2 km
Sep 2, 2024 21 km NW of Steamboat Springs, Colorado M3.1 123 km 2 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

10 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2.

Date Rating Distance Path Fatalities
Jun 20, 1975 EF2 51 km 0.5 mi 0
Jul 9, 2015 EF1 75 km 0.1 mi 0
Jun 21, 2006 EF1 70 km 1.0 mi 0
Sep 8, 2000 EF1 97 km 0.4 mi 0
Apr 6, 1974 EF1 61 km 0.1 mi 0
Jul 3, 1957 EF1 61 km 0.1 mi 0
May 19, 2009 EF0 81 km 0.3 mi 0
Jun 30, 2004 EF0 63 km 0.1 mi 0
Apr 11, 2000 EF0 96 km 0.1 mi 0
Aug 20, 1986 EF0 84 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: PINE GULCH (138,141 acres, 2020).

Year Name Acres Burned Distance
2020 PINE GULCH 138,141 89 km
2020 GRIZZLY CREEK 30,705 29 km
2002 BIG FISH 17,273 53 km
2012 PINE RIDGE 13,862 77 km
2018 LAKE CHRISTINE 12,506 46 km
2002 COAL SEAM 12,007 14 km
2002 SPRING CREEK 10,552 14 km
2004 GREASEWOOD WFU 6,963 72 km
2018 INDIAN VALLEY 6,376 89 km
2002 LOST LAKES 5,888 64 km
2018 CABIN LAKE 5,765 38 km
1996 HATCHET 5,685 99 km
2016 LOST SOLAR 5,141 36 km
2021 MUDDY SLIDE 4,372 91 km
2002 NORTH BARCUS 4,042 95 km
1987 BATTLEMENT 3,839 44 km
1994 WAKE 3,834 80 km
2000 SCANDARD 3,617 63 km
2021 SYLVAN 3,480 70 km
2020 FAWN CREEK 3,399 77 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 24°F (-5°C) 1.1 in Coldest
February 28°F (-2°C) 1.1 in Driest
March 36°F (2°C) 1.3 in
April 43°F (6°C) 1.3 in
May 52°F (11°C) 1.4 in
June 62°F (16°C) 1.1 in
July 70°F (21°C) 1.3 in Warmest
August 66°F (19°C) 1.4 in
September 58°F (14°C) 1.4 in
October 47°F (8°C) 1.5 in Wettest
November 34°F (1°C) 1.2 in
December 24°F (-5°C) 1.4 in

New Castle has a seasonal temperature swing of 47°F / from 24°F in January to 70°F in July. Total annual precipitation is 15.4 inches, with October being the wettest month (1.5") and February the driest (1.1").

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