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Weather & Climate in Arapahoe, CO
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Arapahoe experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 32°F in January while summers reach 76°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 16.4 inches (drier than the 38-inch national average). The area receives 19.5 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 49. 54% of days have good air quality. The city sits at an elevation of 4,026 feet.
Temperature
32°F Jan (-0°C)
76°F Jul (24°C)
| Annual Average | 52.7°F |
| 2% below US avg | |
| January Average | 32°F (-0°C) |
| July Average | 76°F (24°C) |
| Sunny Days | 330 days/yr |
Geography
| Elevation | 4,026 ft (1,227 m) |
| Area | 0.3 sq mi (0.7 km²) |
| Population Density | 154/sq mi |
| Coordinates | 38.8529°N, 102.1789°W |
| Timezone | America/Denver |
| County | Cheyenne County County |
| Nearest Airport | Southeast Colorado Regional (LAA) 61 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 49.0 |
| Rating | Good |
| Good Days % | 53.6% |
| Unhealthy Days | 17 |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 3.0 / 100 |
| Social Vulnerability | 18.5 / 100 |
| Community Resilience | 19.9 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
5 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.9.
| Aug 17, 2009 | 8 km E of Eads, Colorado | M3.9 | 61 km | 5 km |
| Jul 15, 2014 | 23 km NNE of Haswell, Colorado | M3.0 | 78 km | 5 km |
| Jan 10, 2003 | 14 km NE of Wiley, Colorado | M2.9 | 77 km | 5 km |
| Aug 7, 2021 | 23 km NE of Sugar City, Colorado | M2.5 | 126 km | 5 km |
| Aug 6, 2016 | 13 km NNE of Wiley, Colorado | M2.5 | 78 km | 6 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
644 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 3 fatalities, 47 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Mar 28, 2007 | EF3 | 93 km | 28.0 mi | 2 |
| May 29, 2001 | EF3 | 96 km | 3.0 mi | 0 |
| Jun 22, 1999 | EF3 | 90 km | 4.0 mi | 0 |
| Jul 7, 1993 | EF3 | 49 km | 9.0 mi | 0 |
| May 19, 1982 | EF3 | 46 km | 2.0 mi | 0 |
| Oct 17, 1971 | EF3 | 91 km | 5.6 mi | 0 |
| Oct 17, 1971 | EF3 | 81 km | 0.1 mi | 0 |
| May 13, 1968 | EF3 | 99 km | 140.4 mi | 0 |
| May 4, 1960 | EF3 | 80 km | 7.1 mi | 0 |
| Jul 20, 1958 | EF3 | 22 km | 3.3 mi | 0 |
| Aug 8, 2023 | EF2 | 87 km | 5.3 mi | 0 |
| Jun 5, 2015 | EF2 | 98 km | 1.5 mi | 0 |
| Apr 27, 2012 | EF2 | 99 km | 19.1 mi | 0 |
| Apr 27, 2012 | EF2 | 96 km | 6.2 mi | 0 |
| Apr 27, 2012 | EF2 | 50 km | 0.7 mi | 0 |
| Mar 28, 2007 | EF2 | 88 km | 34.0 mi | 0 |
| Oct 31, 2000 | EF2 | 24 km | 12.0 mi | 0 |
| Oct 5, 1994 | EF2 | 56 km | 6.3 mi | 0 |
| Jun 7, 1994 | EF2 | 98 km | 7.0 mi | 0 |
| Jun 7, 1994 | EF2 | 94 km | 2.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
14 wildfires (100+ acres) recorded within 100 km. Largest: SHERIDAN LAKE (5,310 acres, 2022).
| Year | Name | Acres Burned | Distance |
| 2022 | SHERIDAN LAKE | 5,310 | 54 km |
| 2000 | UNNAMED | 2,535 | 36 km |
| 2003 | UNNAMED | 2,530 | 79 km |
| 2022 | FF | 2,463 | 84 km |
| 2011 | ZWEYGARDT | 2,118 | 88 km |
| 1994 | UNNAMED | 2,039 | 72 km |
| 2023 | MANVEL | 2,038 | 86 km |
| 2020 | COUNTY RD T | 1,371 | 57 km |
| 2000 | UNNAMED | 1,304 | 14 km |
| 2007 | BRADSHAW | 1,255 | 29 km |
| 2006 | UNNAMED | 1,154 | 33 km |
| 1996 | UNNAMED | 1,154 | 72 km |
| 2016 | BARRETT | 1,101 | 80 km |
| 2022 | COUNTY ROAD 56 | 1,076 | 41 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (-0°C) | 0.3 in | Driest |
| February | 33°F (1°C) | 0.4 in | |
| March | 40°F (5°C) | 0.9 in | |
| April | 49°F (10°C) | 1.3 in | |
| May | 59°F (15°C) | 2.9 in | Wettest |
| June | 70°F (21°C) | 2.5 in | |
| July | 76°F (24°C) | 2.6 in | Warmest |
| August | 73°F (23°C) | 2.1 in | |
| September | 65°F (18°C) | 1.4 in | |
| October | 52°F (11°C) | 0.8 in | |
| November | 38°F (3°C) | 0.6 in | |
| December | 31°F (-1°C) | 0.3 in | Coldest |
Arapahoe has a seasonal temperature swing of 45°F / from 31°F in December to 76°F in July. Total annual precipitation is 16.0 inches, with May being the wettest month (2.9") and January the driest (0.3").