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Weather & Climate in Ex-Rancho San Dimas, Mexico
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Ex-Rancho San Dimas enjoys a temperate climate with an average annual temperature of 58°F (14°C). Winters average 52°F in January while summers reach 59°F in July / relatively mild seasonal variation. The area gets 358 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 42.4 inches. The city sits at an elevation of 8,484 feet.
Temperature
52°F Jan (11°C)
59°F Jul (15°C)
| Annual Average | 57.7°F |
| 7% above US avg | |
| January Average | 52°F (11°C) |
| July Average | 59°F (15°C) |
| Sunny Days | 358 days/yr |
Geography
| Elevation | 8,484 ft (2,586 m) |
| Area | 12.6 sq mi (32.6 km²) |
| Population Density | 665/sq mi |
| Coordinates | 19.1739°N, 99.5653°W |
| Timezone | America/Mexico_City |
Precipitation & Snow
Air Quality
Earthquake History
271 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M7.1.
| Sep 19, 2017 | 1 km S of Matzaco, Mexico | M7.1 | 133 km | 48 km |
| Nov 15, 2012 | 8 km N of San José Poliutla, Mexico | M6.1 | 126 km | 53 km |
| Jul 21, 2000 | 12 km NW of Jolalpan, Mexico | M5.9 | 109 km | 80 km |
| Jun 16, 2013 | 5 km N of Tequicuilco, Mexico | M5.8 | 120 km | 52 km |
| Aug 15, 2009 | 3 km NE of San Miguel Totolapan, Mexico | M5.5 | 139 km | 57 km |
| Feb 28, 2025 | 3 km NE of Pololcingo, Mexico | M5.0 | 100 km | 65 km |
| May 16, 2018 | Guerrero-Michoacan border region, Mexico | M5.0 | 144 km | 51 km |
| Jul 19, 1993 | 4 km W of San Antonio del Rosario, Mexico | M4.9 | 119 km | 56 km |
| May 20, 2014 | 20 km WSW of Apaxtla de Castrejón, Mexico | M4.9 | 139 km | 54 km |
| Aug 29, 1993 | 3 km NNE of Querendas, Mexico | M4.8 | 142 km | 87 km |
| May 26, 2005 | 7 km ESE of Cocula, Mexico | M4.7 | 106 km | 93 km |
| Aug 5, 1998 | 15 km SE of El Terrero, Mexico | M4.6 | 146 km | 68 km |
| Apr 22, 1994 | 7 km ESE of Palmar Chico, Mexico | M4.6 | 96 km | 70 km |
| Apr 5, 2022 | 17 km NNW of Tuzantla, Mexico | M4.5 | 116 km | 4 km |
| Jun 29, 2013 | 10 km WNW of Tequicuilco, Mexico | M4.5 | 118 km | 55 km |
| Nov 29, 1990 | 0 km NNE of Changata, Mexico | M4.4 | 146 km | 85 km |
| May 22, 2013 | 2 km SE of Salguero, Mexico | M4.4 | 140 km | 70 km |
| Sep 11, 2019 | 2 km SSW of Maxela, Mexico | M4.4 | 127 km | 56 km |
| Jun 26, 2006 | 14 km SW of Apaxtla de Castrejón, Mexico | M4.3 | 136 km | 54 km |
| Jul 17, 2007 | 4 km NNE of San Lucas, Mexico | M4.3 | 140 km | 37 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
15 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 5.
| Year | Name | Category | Max Wind | Closest |
| 2025 | Erick | Category 2 | 75 mph | 232 km |
| 2024 | John | Category 3 | 121 mph | 210 km |
| 2023 | Otis | Category 5 | 167 mph | 181 km |
| 2021 | Grace | Category 3 | 121 mph | 245 km |
| 2021 | Rick | Category 2 | 104 mph | 293 km |
| 2017 | Max | Category 1 | 92 mph | 284 km |
| 2010 | Karl | Category 1 | — | 292 km |
| 2007 | Dean | Category 2 | 98 mph | 279 km |
| 2007 | Lorenzo | Category 1 | 75 mph | 297 km |
| 1997 | Pauline | Category 1 | 81 mph | 242 km |
| 1996 | Boris | Category 1 | 92 mph | 269 km |
| 1993 | Gert | Category 2 | 98 mph | 252 km |
| 1990 | Diana | Category 2 | 98 mph | 297 km |
| 1989 | Cosme | Category 1 | 81 mph | 260 km |
| 1988 | Debby | Category 1 | 75 mph | 291 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Nearby Volcanoes
6 volcanoes within 200 km. Closest: Toluca, Nevado de (22 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Toluca, Nevado de | Stratovolcano | 4,680 m (15,354 ft) | -1350 | 22 km |
| Chichinautzin | Volcanic field | 3,930 m (12,894 ft) | 400 | 47 km |
| Zitacuaro-Valle de Bravo | Caldera | 3,500 m (11,483 ft) | -3050 | 76 km |
| Papayo | Lava dome | 3,600 m (11,811 ft) | Unknown | 92 km |
| Iztaccihuatl | Stratovolcano | 5,230 m (17,159 ft) | Unknown | 97 km |
| Popocatepetl | Stratovolcano(es) | 5,393 m (17,694 ft) | 2020 | 101 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 52°F (11°C) | 0.6 in | |
| February | 54°F (12°C) | 0.3 in | Driest |
| March | 57°F (14°C) | 0.6 in | |
| April | 59°F (15°C) | 1.3 in | |
| May | 60°F (16°C) | 3.1 in | Warmest |
| June | 60°F (15°C) | 6.9 in | |
| July | 59°F (15°C) | 7.8 in | Wettest |
| August | 58°F (15°C) | 7.2 in | |
| September | 58°F (15°C) | 6.1 in | |
| October | 57°F (14°C) | 2.6 in | |
| November | 54°F (12°C) | 0.8 in | |
| December | 52°F (11°C) | 0.4 in | Coldest |
Ex-Rancho San Dimas has a seasonal temperature swing of 8°F / from 52°F in December to 60°F in May. Total annual precipitation is 37.5 inches, with July being the wettest month (7.8") and February the driest (0.3").