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Weather & Climate in Mormon Lake, AZ
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Mormon Lake experiences four distinct seasons with an average annual temperature of 46°F (8°C). Winters average 30°F in January while summers reach 65°F in July. The area gets 326 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 24.1 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 45. The city sits at an elevation of 7,149 feet.
Temperature
30°F Jan (-1°C)
65°F Jul (18°C)
| Annual Average | 45.8°F |
| 15% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 65°F (18°C) |
| Sunny Days | 326 days/yr |
Geography
| Elevation | 7,149 ft (2,179 m) |
| Area | 1.4 sq mi (3.6 km²) |
| Population Density | 126/sq mi |
| Coordinates | 34.9116°N, 111.4481°W |
| Timezone | America/Phoenix |
| County | Coconino County County |
| Nearest Airport | Winslow-Lindbergh Regional (INW) 42 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 45.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 94.2 / 100 |
| Social Vulnerability | 58.7 / 100 |
| Community Resilience | 46.2 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | No Rating |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively High |
| Flood | Relatively High |
| Hail | Relatively Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very High |
| Lightning | Very High |
| Ice Storm | Relatively Low |
| Drought | Very Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Moderate |
| Volcano | Relatively Low |
| Avalanche | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
90 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.3.
| Apr 29, 1993 | 5 km SSE of Valle, Arizona | M5.3 | 98 km | 10 km |
| Mar 2, 2005 | 40 km SSW of Winslow West, Arizona | M5.1 | 49 km | 5 km |
| Apr 25, 1993 | 3 km SSW of Valle, Arizona | M5.0 | 102 km | 10 km |
| Jan 30, 2005 | 41 km NNE of Washington Park, Arizona | M4.0 | 37 km | 5 km |
| Jul 5, 1992 | Arizona | M4.0 | 138 km | 5 km |
| Jan 6, 1998 | 15 km WSW of Joseph City, Arizona | M3.9 | 87 km | 5 km |
| May 7, 1993 | 4 km SW of Valle, Arizona | M3.8 | 103 km | 10 km |
| Mar 18, 2011 | 7 km NNW of Clarkdale, Arizona | M3.8 | 59 km | 5 km |
| Jul 23, 2023 | 2 km E of Chino Valley, Arizona | M3.8 | 91 km | 5 km |
| Jan 28, 2005 | 40 km NE of Washington Park, Arizona | M3.8 | 47 km | 5 km |
| Mar 31, 1997 | 18 km SE of Valle, Arizona | M3.7 | 85 km | 5 km |
| Apr 17, 1995 | 8 km W of Tusayan, Arizona | M3.7 | 137 km | 5 km |
| Mar 14, 1992 | 20 km WSW of Grand Canyon Village, Arizona | M3.7 | 143 km | 5 km |
| Mar 14, 1992 | 12 km WSW of Grand Canyon Village, Arizona | M3.7 | 142 km | 5 km |
| Jan 23, 2011 | 7 km NNW of Clarkdale, Arizona | M3.6 | 59 km | 5 km |
| Feb 4, 1993 | 8 km W of Tusayan, Arizona | M3.6 | 137 km | 5 km |
| Feb 8, 2005 | 37 km NE of Washington Park, Arizona | M3.6 | 47 km | 5 km |
| Apr 29, 1993 | 4 km S of Valle, Arizona | M3.6 | 101 km | 10 km |
| Jun 21, 1993 | 14 km WSW of Grand Canyon Village, Arizona | M3.5 | 142 km | 5 km |
| Oct 25, 2011 | 4 km WSW of Paulden, Arizona | M3.5 | 98 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
52 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 7 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Aug 10, 1972 | EF3 | 95 km | 0.1 mi | 0 |
| Sep 14, 2011 | EF2 | 53 km | 0.5 mi | 0 |
| Oct 6, 2010 | EF2 | 44 km | 18.6 mi | 0 |
| Oct 6, 2010 | EF2 | 40 km | 32.0 mi | 0 |
| Oct 6, 2010 | EF2 | 39 km | 34.1 mi | 0 |
| Oct 6, 2010 | EF2 | 40 km | 2.8 mi | 0 |
| May 16, 1993 | EF2 | 97 km | 0.3 mi | 0 |
| Oct 24, 1992 | EF2 | 58 km | 5.5 mi | 0 |
| Nov 19, 2023 | EF1 | 75 km | 2.4 mi | 0 |
| Oct 3, 2022 | EF1 | 85 km | 0.7 mi | 0 |
| Jul 10, 2021 | EF1 | 37 km | 1.3 mi | 0 |
| Oct 6, 2010 | EF1 | 50 km | 14.1 mi | 0 |
| Oct 14, 2006 | EF1 | 39 km | 9.3 mi | 0 |
| Sep 13, 1996 | EF1 | 94 km | 4.0 mi | 0 |
| Oct 17, 1962 | EF1 | 96 km | 2.0 mi | 0 |
| Nov 2, 1959 | EF1 | 94 km | 0.1 mi | 0 |
| May 13, 2024 | EF0 | 80 km | 0.1 mi | 0 |
| Sep 9, 2023 | EF0 | 93 km | 0.1 mi | 0 |
| Jul 17, 2023 | EF0 | 91 km | 5.5 mi | 0 |
| Jun 25, 2022 | EF0 | 77 km | 0.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Nearby Volcanoes
1 volcano within 200 km. Closest: San Francisco Volcanic Field (53 km).
| Name | Type | Elevation | Last Eruption | Distance |
| San Francisco Volcanic Field | Pyroclastic cone | 3,850 m (12,631 ft) | 1075 | 53 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: CAVE CREEK COMPLEX (246,143 acres, 2005).
| Year | Name | Acres Burned | Distance |
| 2005 | CAVE CREEK COMPLEX | 246,143 | 84 km |
| 2004 | WILLOW | 118,494 | 89 km |
| 2021 | RAFAEL | 75,741 | 54 km |
| 2021 | BACKBONE | 41,168 | 61 km |
| 2017 | BROOKLYN | 39,780 | 97 km |
| 2016 | JACK | 35,926 | 26 km |
| 2017 | GOODWIN | 28,192 | 98 km |
| 2022 | PIPELINE | 26,437 | 51 km |
| 1990 | DUDE | 25,080 | 64 km |
| 2015 | CAMILLO | 24,654 | 12 km |
| 2024 | SKELETON | 22,753 | 99 km |
| 2014 | SLIDE | 22,698 | 34 km |
| 2017 | BOUNDARY | 17,814 | 68 km |
| 1996 | HOCKDERFFER | 17,755 | 62 km |
| 2022 | TUNNEL | 17,659 | 52 km |
| 2004 | JACKET | 17,453 | 21 km |
| 2019 | COLDWATER | 16,825 | 49 km |
| 2000 | PUMPKIN | 16,086 | 67 km |
| 2018 | TINDER | 16,083 | 47 km |
| 2024 | WEST | 14,978 | 57 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 2.1 in | |
| February | 31°F (-1°C) | 2.2 in | |
| March | 35°F (2°C) | 2.4 in | |
| April | 41°F (5°C) | 1.1 in | |
| May | 49°F (10°C) | 0.8 in | |
| June | 58°F (15°C) | 0.4 in | Driest |
| July | 65°F (18°C) | 3.0 in | Warmest |
| August | 65°F (18°C) | 3.2 in | Wettest |
| September | 59°F (15°C) | 2.0 in | |
| October | 49°F (9°C) | 1.6 in | |
| November | 38°F (3°C) | 1.9 in | |
| December | 29°F (-2°C) | 1.9 in | Coldest |
Mormon Lake has a seasonal temperature swing of 36°F / from 29°F in December to 65°F in July. Total annual precipitation is 22.4 inches, with August being the wettest month (3.2") and June the driest (0.4").