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Weather & Climate in San Isidro, Mexico
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Isidro enjoys a temperate climate with an average annual temperature of 64°F (18°C). Winters average 54°F in January while summers reach 69°F in July / relatively mild seasonal variation. The area gets 312 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 13.3 inches (drier than the 38-inch national average). The city sits at an elevation of 5,627 feet.
Temperature
54°F Jan (12°C)
69°F Jul (21°C)
| Annual Average | 63.6°F |
| 18% above US avg | |
| January Average | 54°F (12°C) |
| July Average | 69°F (21°C) |
| Sunny Days | 312 days/yr |
Geography
| Elevation | 5,627 ft (1,715 m) |
| Area | 447.7 sq mi (1,159.5 km²) |
| Population Density | 3/sq mi |
| Coordinates | 23.8660°N, 100.7751°W |
| Timezone | America/Mexico_City |
Precipitation & Snow
Air Quality
Earthquake History
8 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.0.
| May 16, 2023 | 15 km NNW of Lázaro Cárdenas, Mexico | M5.0 | 109 km | 10 km |
| Jun 5, 2023 | 11 km WNW of Lázaro Cárdenas, Mexico | M4.6 | 114 km | 10 km |
| Jun 4, 2004 | 5 km NNW of San Isidro, Mexico | M4.4 | 6 km | 13 km |
| Jul 30, 1992 | 12 km E of Iturbide, Mexico | M4.3 | 138 km | 10 km |
| Jul 21, 2020 | 28 km SSW of Huachichil, Mexico | M4.2 | 124 km | 10 km |
| Sep 20, 2000 | 11 km SSW of Iturbide, Mexico | M4.2 | 120 km | 33 km |
| Apr 17, 2006 | 21 km WNW of La Ascensión, Mexico | M4.1 | 94 km | 17 km |
| Jun 25, 2013 | 22 km E of Doctor Arroyo, Mexico | M4.0 | 84 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
3 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 2.
| Year | Name | Category | Max Wind | Closest |
| 2010 | Alex | Category 2 | 86 mph | 191 km |
| 2005 | Emily | Category 2 | 81 mph | 245 km |
| 1988 | Gilbert | Category 1 | 92 mph | 216 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 54°F (12°C) | 0.7 in | Coldest |
| February | 57°F (14°C) | 0.4 in | |
| March | 62°F (17°C) | 0.4 in | Driest |
| April | 66°F (19°C) | 0.8 in | |
| May | 70°F (21°C) | 1.6 in | |
| June | 70°F (21°C) | 1.8 in | Warmest |
| July | 69°F (21°C) | 1.9 in | |
| August | 69°F (21°C) | 1.8 in | |
| September | 67°F (20°C) | 2.2 in | Wettest |
| October | 64°F (18°C) | 1.0 in | |
| November | 59°F (15°C) | 0.4 in | |
| December | 55°F (13°C) | 0.5 in |
San Isidro has a seasonal temperature swing of 16°F / from 54°F in January to 70°F in June. Total annual precipitation is 13.3 inches, with September being the wettest month (2.2") and March the driest (0.4").