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Weather & Climate in Fronteras, Mexico
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Fronteras enjoys a temperate climate with an average annual temperature of 64°F (18°C). Winters average 48°F in January while summers reach 80°F in July. The area gets 308 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 15.3 inches (drier than the 38-inch national average). The city sits at an elevation of 3,724 feet.
Temperature
48°F Jan (9°C)
80°F Jul (27°C)
| Annual Average | 63.9°F |
| 18% above US avg | |
| January Average | 48°F (9°C) |
| July Average | 80°F (27°C) |
| Sunny Days | 308 days/yr |
Geography
| Elevation | 3,724 ft (1,135 m) |
| Area | 1,156.2 sq mi (2,994.5 km²) |
| Population Density | 1/sq mi |
| Coordinates | 30.8973°N, 109.5597°W |
| Timezone | America/Hermosillo |
Precipitation & Snow
Air Quality
Earthquake History
20 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.2.
| Jul 31, 2021 | 17 km W of Bavispe, Mexico | M5.2 | 65 km | 10 km |
| Oct 16, 1999 | 10 km ESE of Imuris, Mexico | M4.5 | 115 km | 5 km |
| Aug 18, 2021 | 23 km NNE of Villa Hidalgo, Mexico | M4.1 | 71 km | 10 km |
| Oct 5, 1993 | 15 km NNE of Bacadéhuachi, Mexico | M4.0 | 116 km | 10 km |
| Oct 31, 1990 | 29 km E of Fronteras, Mexico | M3.8 | 29 km | 5 km |
| Oct 31, 1993 | 21 km NE of Bacadéhuachi, Mexico | M3.7 | 118 km | 5 km |
| Aug 5, 2021 | 24 km SSE of Animas, New Mexico | M3.6 | 124 km | 16 km |
| Oct 20, 1993 | 16 km E of Moctezuma, Mexico | M3.5 | 123 km | 5 km |
| Mar 10, 1992 | 33 km WNW of Bavispe, Mexico | M3.5 | 43 km | 5 km |
| Apr 22, 2020 | 28 km SSW of Rodeo, New Mexico | M3.5 | 88 km | 21 km |
| Feb 27, 2018 | 32 km E of Esqueda, Mexico | M3.4 | 35 km | 10 km |
| Aug 12, 2021 | 21 km SSW of Playas, New Mexico | M3.3 | 129 km | 18 km |
| Aug 5, 2021 | 37 km SSW of Playas, New Mexico | M3.3 | 113 km | 19 km |
| Aug 10, 2021 | 19 km WNW of Huachinera, Mexico | M3.1 | 79 km | 16 km |
| Aug 5, 2021 | 31 km SSW of Playas, New Mexico | M3.1 | 119 km | 17 km |
| Jan 31, 2018 | 35 km ENE of Fronteras, Mexico | M3.0 | 35 km | 14 km |
| Aug 26, 2017 | 33 km SE of Agua Prieta, Mexico | M3.0 | 41 km | 18 km |
| Jan 4, 2020 | 22 km SSW of Rodeo, New Mexico | M2.8 | 94 km | 5 km |
| Aug 1, 2021 | 30 km WNW of Bavispe, Mexico | M2.5 | 47 km | 14 km |
| Aug 5, 2021 | 33 km SSW of Playas, New Mexico | M2.5 | 117 km | 16 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: PASCO (104,011 acres, 2009).
| Year | Name | Acres Burned | Distance |
| 2009 | PASCO | 104,011 | 90 km |
| 2003 | UNNAMED | 38,998 | 75 km |
| 2018 | SAN LUIS | 36,237 | 93 km |
| 1994 | FLAT COMPLEX | 34,859 | 94 km |
| 2011 | CLOVERDALE2 | 33,552 | 76 km |
| 2011 | MONUMENT | 30,219 | 86 km |
| 1999 | GARCIA | 22,621 | 93 km |
| 2011 | TRUCK STOP | 19,656 | 83 km |
| 2009 | HOG | 18,086 | 84 km |
| 1994 | LYNCH | 16,204 | 97 km |
| 1988 | PEAK | 16,078 | 84 km |
| 2012 | CAMPINI | 11,893 | 88 km |
| 2017 | SWISSHELMS | 10,798 | 88 km |
| 1989 | SWISSHELM | 8,452 | 87 km |
| 2012 | SCHOOL CANYON | 8,374 | 97 km |
| 2015 | HOG | 7,875 | 86 km |
| 2022 | FOSTER | 7,615 | 89 km |
| 2016 | BAKER CANYON | 7,562 | 74 km |
| 2009 | SKELETON | 6,877 | 93 km |
| 2001 | VALENCY | 6,249 | 72 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 48°F (9°C) | 1.1 in | Coldest |
| February | 52°F (11°C) | 0.6 in | |
| March | 56°F (13°C) | 0.7 in | |
| April | 62°F (17°C) | 0.3 in | |
| May | 70°F (21°C) | 0.2 in | Driest |
| June | 79°F (26°C) | 0.6 in | |
| July | 80°F (27°C) | 4.1 in | Warmest, Wettest |
| August | 78°F (26°C) | 3.4 in | |
| September | 75°F (24°C) | 1.5 in | |
| October | 65°F (18°C) | 0.9 in | |
| November | 55°F (13°C) | 0.6 in | |
| December | 48°F (9°C) | 1.2 in |
Fronteras has a seasonal temperature swing of 32°F / from 48°F in January to 80°F in July. Total annual precipitation is 15.3 inches, with July being the wettest month (4.1") and May the driest (0.2").