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Weather & Climate in La Mesa, Mexico
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
La Mesa enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 49°F in January while summers reach 78°F in July. The area gets 299 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 20.3 inches (drier than the 38-inch national average). The city sits at an elevation of 3,878 feet.
Temperature
49°F Jan (9°C)
78°F Jul (26°C)
| Annual Average | 62.8°F |
| 16% above US avg | |
| January Average | 49°F (9°C) |
| July Average | 78°F (26°C) |
| Sunny Days | 299 days/yr |
Geography
| Elevation | 3,878 ft (1,182 m) |
| Area | 272.0 sq mi (704.6 km²) |
| Population Density | 11/sq mi |
| Coordinates | 31.1597°N, 110.9744°W |
| Timezone | America/Hermosillo |
Precipitation & Snow
Air Quality
Earthquake History
3 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.5.
| Oct 16, 1999 | 10 km ESE of Imuris, Mexico | M4.5 | 50 km | 5 km |
| Sep 28, 2023 | 21 km E of Tanque Verde, Arizona | M3.1 | 126 km | 12 km |
| Aug 9, 2025 | 14 km ENE of Willow Canyon, Arizona | M2.6 | 147 km | 12 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: MURPHY COMPLEX (64,407 acres, 2011).
| Year | Name | Acres Burned | Distance |
| 2011 | MURPHY COMPLEX | 64,407 | 37 km |
| 2017 | SAWMILL | 47,357 | 79 km |
| 2002 | RYAN | 36,922 | 64 km |
| 2011 | MONUMENT | 30,219 | 75 km |
| 2009 | ELK HORN | 22,745 | 87 km |
| 2002 | WALKER | 17,438 | 23 km |
| 2022 | TONTO CANYON | 16,989 | 29 km |
| 2005 | FLORIDA | 16,362 | 64 km |
| 2011 | BULL | 16,339 | 22 km |
| 1988 | PEAK | 16,078 | 72 km |
| 2016 | BROWN | 15,681 | 87 km |
| 2020 | ENCINOS | 14,145 | 83 km |
| 2022 | SAN RAFAEL | 12,203 | 47 km |
| 2012 | CAMPINI | 11,893 | 61 km |
| 2023 | BEEHIVE | 11,087 | 43 km |
| 2013 | SOLDIER BASIN | 11,052 | 39 km |
| 2016 | LA SIERRA | 11,035 | 25 km |
| 1986 | SASABE | 10,734 | 66 km |
| 2011 | ARLENE | 10,586 | 52 km |
| 2021 | ALAMO | 10,478 | 26 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 49°F (9°C) | 1.4 in | Coldest |
| February | 51°F (10°C) | 1.2 in | |
| March | 54°F (12°C) | 1.0 in | |
| April | 60°F (15°C) | 0.4 in | |
| May | 67°F (19°C) | 0.2 in | Driest |
| June | 76°F (24°C) | 0.6 in | |
| July | 78°F (26°C) | 5.1 in | Warmest, Wettest |
| August | 77°F (25°C) | 4.3 in | |
| September | 73°F (23°C) | 2.0 in | |
| October | 65°F (18°C) | 1.2 in | |
| November | 56°F (13°C) | 1.0 in | |
| December | 49°F (10°C) | 1.9 in |
La Mesa has a seasonal temperature swing of 29°F / from 49°F in January to 78°F in July. Total annual precipitation is 20.3 inches, with July being the wettest month (5.1") and May the driest (0.2").