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Weather & Climate in San Manuel, AZ
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Manuel enjoys a temperate climate with an average annual temperature of 67°F (19°C). Winters average 49°F in January while summers reach 84°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 12.6 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 3,473 feet.
Temperature
49°F Jan (9°C)
84°F Jul (29°C)
| Annual Average | 66.7°F |
| 24% above US avg | |
| January Average | 49°F (9°C) |
| July Average | 84°F (29°C) |
| Sunny Days | 330 days/yr |
Geography
| Elevation | 3,473 ft (1,059 m) |
| Area | 20.8 sq mi (53.7 km²) |
| Population Density | 158/sq mi |
| Coordinates | 32.6091°N, 110.6415°W |
| Timezone | America/Phoenix |
| County | Pinal County County |
| Nearest Airport | Marana Regional (AVW) 36 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 45.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 93.8 / 100 |
| Social Vulnerability | 43.7 / 100 |
| Community Resilience | 13.9 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively High |
| Flood | Relatively High |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively High |
| Winter Weather | Very Low |
| Lightning | Very High |
| Drought | Relatively High |
| Cold Wave | Very Low |
| Landslide | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
56 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.3.
| Jun 29, 2014 | 13 km SW of Franklin, Arizona | M5.3 | 138 km | 6 km |
| Jun 29, 2014 | 12 km S of Franklin, Arizona | M4.0 | 145 km | 5 km |
| Jul 3, 2014 | 11 km S of Franklin, Arizona | M3.9 | 146 km | 5 km |
| Jul 9, 2014 | 13 km S of Franklin, Arizona | M3.6 | 146 km | 5 km |
| Jul 11, 2014 | 5 km WSW of Franklin, Arizona | M3.6 | 142 km | 5 km |
| Jun 29, 2014 | 16 km SSW of Franklin, Arizona | M3.6 | 139 km | 5 km |
| May 24, 2010 | 24 km NNE of Morenci, Arizona | M3.6 | 149 km | 5 km |
| Jul 10, 2014 | 16 km S of Franklin, Arizona | M3.6 | 144 km | 5 km |
| Jul 12, 2014 | 17 km S of Franklin, Arizona | M3.6 | 144 km | 5 km |
| Jul 11, 2014 | 12 km SSW of Franklin, Arizona | M3.5 | 141 km | 5 km |
| Jun 29, 2014 | 14 km S of Franklin, Arizona | M3.5 | 148 km | 5 km |
| Jun 30, 2014 | 19 km SSW of Franklin, Arizona | M3.5 | 142 km | 5 km |
| Jul 6, 2014 | Arizona | M3.5 | 140 km | 5 km |
| Jan 25, 2015 | 9 km S of Franklin, Arizona | M3.4 | 147 km | 5 km |
| Apr 27, 2019 | 2 km WSW of Franklin, Arizona | M3.4 | 145 km | 10 km |
| Jun 29, 2014 | 10 km SW of Franklin, Arizona | M3.4 | 139 km | 5 km |
| Aug 4, 2015 | Arizona | M3.3 | 141 km | 5 km |
| Jun 29, 2014 | 10 km SSW of Franklin, Arizona | M3.3 | 143 km | 5 km |
| Oct 3, 2023 | 3 km WSW of Franklin, Arizona | M3.3 | 144 km | 5 km |
| Jul 11, 2014 | 6 km SSW of Franklin, Arizona | M3.3 | 143 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
49 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 3 fatalities, 75 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jul 28, 1994 | EF2 | 44 km | 2.0 mi | 0 |
| Aug 27, 1964 | EF2 | 58 km | 0.1 mi | 2 |
| Jul 2, 2024 | EF1 | 56 km | 3.3 mi | 0 |
| Sep 23, 2019 | EF1 | 80 km | 1.7 mi | 0 |
| Jul 14, 1996 | EF1 | 83 km | 0.1 mi | 0 |
| Jul 6, 1992 | EF1 | 50 km | 2.8 mi | 0 |
| Aug 24, 1991 | EF1 | 63 km | 1.0 mi | 0 |
| Jul 20, 1988 | EF1 | 82 km | 0.5 mi | 0 |
| Mar 15, 1985 | EF1 | 91 km | 0.1 mi | 0 |
| Jul 16, 1984 | EF1 | 78 km | 0.1 mi | 0 |
| Jul 16, 1984 | EF1 | 54 km | 0.1 mi | 0 |
| Dec 23, 1975 | EF1 | 96 km | 2.0 mi | 0 |
| Oct 23, 1974 | EF1 | 16 km | 4.7 mi | 0 |
| Oct 23, 1974 | EF1 | 37 km | 0.1 mi | 0 |
| Jun 23, 1974 | EF1 | 66 km | 1.0 mi | 1 |
| Jun 21, 1972 | EF1 | 87 km | 1.0 mi | 0 |
| Sep 1, 1971 | EF1 | 43 km | 0.1 mi | 0 |
| Jul 17, 1971 | EF1 | 86 km | 0.1 mi | 0 |
| Aug 16, 1969 | EF1 | 82 km | 1.0 mi | 0 |
| Aug 9, 1966 | EF1 | 89 km | 0.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: TELEGRAPH (187,248 acres, 2021).
| Year | Name | Acres Burned | Distance |
| 2021 | TELEGRAPH | 187,248 | 77 km |
| 2001 | UNNAMED | 151,684 | 100 km |
| 2020 | BIGHORN | 126,131 | 20 km |
| 2003 | ASPEN | 79,707 | 23 km |
| 2021 | MESCAL | 79,346 | 71 km |
| 2017 | FRYE | 54,202 | 74 km |
| 2017 | SAWMILL | 47,357 | 88 km |
| 2021 | PINNACLE | 35,281 | 51 km |
| 2024 | FREEMAN | 32,950 | 35 km |
| 2004 | NUTALL COMPLEX (NUTALL) | 31,880 | 72 km |
| 2002 | BULLOCK | 31,774 | 21 km |
| 2020 | VALLEY | 29,331 | 95 km |
| 2017 | BURRO | 26,852 | 26 km |
| 2009 | GREASEWOOD | 24,902 | 83 km |
| 1993 | MARKHAM | 24,636 | 27 km |
| 2020 | ROCKHOUSE | 18,435 | 58 km |
| 2012 | GRAPEVINE | 17,542 | 76 km |
| 2005 | FLORIDA | 16,362 | 100 km |
| 2019 | GAP | 16,084 | 97 km |
| 2017 | LIZARD | 15,791 | 92 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 49°F (9°C) | 1.4 in | |
| February | 52°F (11°C) | 1.3 in | |
| March | 56°F (13°C) | 1.4 in | |
| April | 63°F (17°C) | 0.4 in | |
| May | 71°F (22°C) | 0.3 in | |
| June | 81°F (27°C) | 0.2 in | Driest |
| July | 84°F (29°C) | 2.6 in | Warmest, Wettest |
| August | 82°F (28°C) | 2.6 in | |
| September | 78°F (25°C) | 1.6 in | |
| October | 68°F (20°C) | 1.3 in | |
| November | 56°F (13°C) | 1.1 in | |
| December | 48°F (9°C) | 1.7 in | Coldest |
San Manuel has a seasonal temperature swing of 36°F / from 48°F in December to 84°F in July. Total annual precipitation is 15.9 inches, with July being the wettest month (2.6") and June the driest (0.2").