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Weather & Climate in Dennehotso, AZ
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Dennehotso enjoys a temperate climate with an average annual temperature of 56°F (14°C). Winters average 33°F in January while summers reach 80°F in July. The area gets 318 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Air quality is rated Good with a median AQI of 45. The city sits at an elevation of 5,162 feet.
Temperature
33°F Jan (1°C)
80°F Jul (27°C)
| Annual Average | 56.4°F |
| 4% above US avg | |
| January Average | 33°F (1°C) |
| July Average | 80°F (27°C) |
| Sunny Days | 318 days/yr |
Geography
| Elevation | 5,162 ft (1,573 m) |
| Area | 10.0 sq mi (25.8 km²) |
| Population Density | 49/sq mi |
| Coordinates | 36.8290°N, 109.8757°W |
| Timezone | America/Phoenix |
| County | San Juan County County |
| Nearest Airport | Four Corners Regional (FMN) 91 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 45.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 26.8 / 100 |
| Social Vulnerability | 91.4 / 100 |
| Community Resilience | 1.1 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| 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
50 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.8.
| Mar 1, 2016 | 34 km N of Halls Crossing, Utah | M3.8 | 124 km | 15 km |
| Apr 22, 2017 | 4 km SSW of Bluff, Utah | M3.7 | 54 km | 9 km |
| Jun 6, 2008 | 10 km NE of Bluff, Utah | M3.6 | 69 km | 12 km |
| Mar 1, 2025 | 6 km SE of Moenkopi, Arizona | M3.4 | 145 km | 12 km |
| Oct 18, 1998 | 14 km SE of Moenkopi, Arizona | M3.4 | 140 km | 5 km |
| Aug 2, 1991 | 59 km WNW of Blanding, Utah | M3.4 | 111 km | 6 km |
| Jun 25, 1991 | 10 km W of Oljato-Monument Valley, Utah | M3.4 | 49 km | 0 km |
| Jul 13, 2009 | 3 km SE of Navajo Mountain, Utah | M3.3 | 81 km | 3 km |
| Jul 4, 2007 | 9 km S of Moenkopi, Arizona | M3.2 | 149 km | 5 km |
| Feb 24, 1993 | 16 km SSE of Monticello, Utah | M3.1 | 112 km | -1 km |
| May 13, 1993 | 19 km SSE of Monticello, Utah | M3.1 | 111 km | -3 km |
| Mar 31, 2009 | 32 km NE of Halls Crossing, Utah | M3.0 | 103 km | 4 km |
| Jul 15, 1992 | 26 km NNW of Mexican Hat, Utah | M3.0 | 61 km | 5 km |
| May 20, 1994 | 0 km SSE of Oljato-Monument Valley, Utah | M3.0 | 40 km | -1 km |
| Apr 14, 2009 | 33 km NE of Halls Crossing, Utah | M2.9 | 103 km | 3 km |
| Mar 18, 2017 | 27 km NE of Halls Crossing, Utah | M2.9 | 101 km | 6 km |
| Oct 18, 2016 | 35 km NNE of Halls Crossing, Utah | M2.9 | 116 km | 8 km |
| Sep 13, 1996 | 10 km NW of Kayenta, Arizona | M2.9 | 42 km | 2 km |
| Aug 23, 2009 | 32 km NE of Halls Crossing, Utah | M2.8 | 104 km | 6 km |
| Sep 22, 1992 | 15 km NW of Oljato-Monument Valley, Utah | M2.8 | 55 km | 0 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
6 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF0.
| Date | Rating | Distance | Path | Fatalities |
| Sep 13, 2022 | EF0 | 3 km | 7.7 mi | 0 |
| Jun 6, 2015 | EF0 | 28 km | 28.7 mi | 0 |
| Oct 21, 2010 | EF0 | 76 km | 0.8 mi | 0 |
| Aug 3, 2010 | EF0 | 67 km | 1.0 mi | 0 |
| May 25, 1996 | EF0 | 35 km | 0.1 mi | 0 |
| Apr 29, 1957 | EF0 | 5 km | 2.5 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
10 wildfires (100+ acres) recorded within 100 km. Largest: WESTTOE (5,397 acres, 1986).
| Year | Name | Acres Burned | Distance |
| 1986 | WESTTOE | 5,397 | 84 km |
| 1986 | HOGAN | 5,298 | 93 km |
| 2006 | NAVAJO MOUNTAIN 1 | 5,257 | 91 km |
| 2002 | CANYONS COMPLEX (HAMMOND) | 3,859 | 95 km |
| 2002 | CARRIZO 1 | 3,701 | 68 km |
| 1984 | FERNANDO | 3,419 | 94 km |
| 2019 | PEAVINE CANYON | 3,265 | 97 km |
| 1987 | AZTECTHREE | 2,857 | 94 km |
| 1998 | HOVENWEEP | 2,456 | 91 km |
| 2003 | WOODENSHOE | 2,342 | 98 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 33°F (1°C) | 0.6 in | |
| February | 38°F (3°C) | 0.6 in | |
| March | 45°F (7°C) | 0.7 in | |
| April | 52°F (11°C) | 0.5 in | |
| May | 62°F (16°C) | 0.4 in | |
| June | 72°F (22°C) | 0.2 in | Driest |
| July | 80°F (27°C) | 0.9 in | Warmest |
| August | 76°F (24°C) | 1.0 in | Wettest |
| September | 67°F (20°C) | 0.9 in | |
| October | 55°F (13°C) | 1.0 in | |
| November | 42°F (5°C) | 0.7 in | |
| December | 32°F (0°C) | 0.7 in | Coldest |
Dennehotso has a seasonal temperature swing of 48°F / from 32°F in December to 80°F in July. Total annual precipitation is 8.3 inches, with August being the wettest month (1.0") and June the driest (0.2").