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Weather & Climate in Arriba, CO

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

Arriba experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 31°F in January while summers reach 74°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 16.5 inches (drier than the 38-inch national average). The area receives 24.5 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 5,237 feet.

Temperature

31°F Jan (-0°C) 74°F Jul (24°C)
Annual Average51.2°F
5% below US avg
January Average31°F (-0°C)
July Average74°F (24°C)
Sunny Days330 days/yr

Geography

Elevation5,237 ft (1,596 m)
Area0.4 sq mi (1.1 km²)
Population Density558/sq mi
Coordinates39.2843°N, 103.2740°W
TimezoneAmerica/Denver
CountyWashington County County
Nearest AirportColorado Plains Regional (AKO)
62 miles away

Precipitation & Snow

Annual Rainfall 16.5"
57% below US avg
Snowfall 24.5"
Wettest Month (Jul) 2.76"
Driest Month (Jan) 0.28"

Air Quality

AQI Median41.0
RatingGood

Natural Hazard Risk

Overall RiskVery Low
Risk Score12.0 / 100
Social Vulnerability64.6 / 100
Community Resilience44.7 / 100

Hazard Breakdown

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

Earthquake History

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

Dec 25, 1994 9 km NE of Larkspur, Colorado M4.0 132 km 10 km
Aug 17, 2009 8 km E of Eads, Colorado M3.9 104 km 5 km
Jul 15, 2014 23 km NNE of Haswell, Colorado M3.0 75 km 5 km
Jan 10, 2003 14 km NE of Wiley, Colorado M2.9 128 km 5 km
Aug 7, 2021 23 km NE of Sugar City, Colorado M2.5 100 km 5 km
Aug 6, 2016 13 km NNE of Wiley, Colorado M2.5 124 km 6 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

656 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 46 injuries.

Date Rating Distance Path Fatalities
May 31, 1999 EF3 27 km 7.0 mi 0
May 30, 1996 EF3 71 km 0.5 mi 0
Jul 21, 1993 EF3 44 km 12.0 mi 0
Jul 7, 1993 EF3 69 km 9.0 mi 0
Jun 6, 1990 EF3 39 km 7.0 mi 0
Jun 6, 1990 EF3 55 km 7.0 mi 0
Aug 8, 2023 EF2 84 km 5.3 mi 0
Jun 21, 2023 EF2 65 km 4.9 mi 0
Jun 21, 2023 EF2 90 km 4.5 mi 0
Jun 21, 2023 EF2 82 km 1.9 mi 0
Jun 5, 2015 EF2 41 km 1.5 mi 0
Jun 7, 2012 EF2 80 km 7.5 mi 0
May 10, 2004 EF2 65 km 6.0 mi 0
May 31, 1999 EF2 22 km 7.0 mi 0
Oct 5, 1994 EF2 58 km 6.3 mi 0
Jun 14, 1990 EF2 90 km 7.0 mi 0
Jun 6, 1990 EF2 85 km 2.0 mi 0
May 30, 1988 EF2 52 km 1.0 mi 0
Jun 14, 1982 EF2 74 km 2.0 mi 0
May 29, 1982 EF2 44 km 1.0 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Wildfire History

14 wildfires (100+ acres) recorded within 100 km. Largest: LAST CHANCE (17,958 acres, 2012).

Year Name Acres Burned Distance
2012 LAST CHANCE 17,958 62 km
2002 UNNAMED 8,688 98 km
2018 HWY 94 7,480 54 km
2011 KARVAL 5,322 70 km
1996 UNNAMED 4,928 15 km
2022 CR 15 3,244 66 km
2003 UNNAMED 2,530 65 km
2022 FF 2,463 28 km
2016 PUMKIN CENTER 2,451 57 km
2002 UNNAMED 1,612 91 km
2020 SHAMROCK 1,582 84 km
2020 COUNTY RD T 1,371 100 km
2024 QUAIL HOLLOW 1,267 86 km
2002 UNNAMED 1,109 82 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 31°F (-0°C) 0.3 in Driest
February 31°F (-0°C) 0.4 in
March 38°F (3°C) 0.9 in
April 46°F (8°C) 1.2 in
May 55°F (13°C) 2.6 in
June 66°F (19°C) 2.3 in
July 74°F (24°C) 2.8 in Warmest, Wettest
August 70°F (21°C) 2.1 in
September 61°F (16°C) 1.2 in
October 49°F (10°C) 0.7 in
November 36°F (2°C) 0.6 in
December 29°F (-2°C) 0.3 in Coldest

Arriba has a seasonal temperature swing of 46°F / from 29°F in December to 74°F in July. Total annual precipitation is 15.3 inches, with July being the wettest month (2.8") and January the driest (0.3").

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