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Weather & Climate in Piedras Negras, Mexico
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Piedras Negras enjoys a temperate climate with an average annual temperature of 70°F (21°C). Winters average 52°F in January while summers reach 86°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 20.5 inches (drier than the 38-inch national average). The city sits at an elevation of 732 feet.
Temperature
52°F Jan (11°C)
86°F Jul (30°C)
| Annual Average | 70.4°F |
| 30% above US avg | |
| January Average | 52°F (11°C) |
| July Average | 86°F (30°C) |
| Sunny Days | 299 days/yr |
Geography
| Elevation | 732 ft (223 m) |
| Area | 25.1 sq mi (65.1 km²) |
| Population Density | 5,978/sq mi |
| Coordinates | 28.7001°N, 100.5235°W |
| Timezone | America/Matamoros |
Precipitation & Snow
Air Quality
Earthquake History
20 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.6.
| Jul 24, 2025 | 18 km E of El Indio, Texas | M3.6 | 44 km | 1 km |
| Apr 3, 2005 | 11 km NE of Guerrero, Mexico | M3.5 | 40 km | 5 km |
| Feb 20, 2022 | 3 km S of El Indio, Texas | M3.4 | 32 km | 3 km |
| Jan 9, 2021 | 3 km WSW of El Indio, Texas | M3.3 | 28 km | 9 km |
| Feb 18, 2021 | 7 km SSE of El Indio, Texas | M3.3 | 36 km | 7 km |
| Jun 18, 2021 | 3 km SSW of El Indio, Texas | M3.1 | 31 km | 2 km |
| Feb 27, 2021 | 6 km WNW of El Indio, Texas | M3.0 | 24 km | 9 km |
| Mar 20, 2019 | 3 km E of Cotulla, Texas | M2.8 | 133 km | 5 km |
| Apr 13, 2023 | 7 km ESE of El Indio, Texas | M2.7 | 36 km | 9 km |
| Aug 29, 2021 | 3 km SW of El Indio, Texas | M2.7 | 29 km | 7 km |
| Aug 18, 2021 | 2 km WSW of El Indio, Texas | M2.6 | 28 km | 8 km |
| Jun 3, 2021 | 3 km E of Las Quintas Fronterizas, Texas | M2.6 | 8 km | 7 km |
| May 8, 2021 | 16 km ENE of El Indio, Texas | M2.6 | 37 km | 8 km |
| May 7, 2024 | 16 km ENE of El Indio, Texas | M2.6 | 38 km | 3 km |
| Aug 17, 2023 | 4 km SSE of Pearsall, Texas | M2.6 | 142 km | 5 km |
| Jun 14, 2025 | 11 km E of Dilley, Texas | M2.6 | 143 km | 9 km |
| May 7, 2021 | 22 km SE of El Indio, Texas | M2.5 | 52 km | 4 km |
| May 7, 2024 | 19 km E of El Indio, Texas | M2.5 | 44 km | 2 km |
| May 9, 2024 | 19 km E of El Indio, Texas | M2.5 | 45 km | 5 km |
| Feb 16, 2021 | 5 km WNW of El Indio, Texas | M2.5 | 24 km | 11 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
2 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 2.
| Year | Name | Category | Max Wind | Closest |
| 1999 | Bret | Category 2 | 92 mph | 297 km |
| 1980 | Allen | Category 2 | 98 mph | 173 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Wildfire History
6 wildfires (100+ acres) recorded within 100 km. Largest: BURR (4,633 acres, 2022).
| Year | Name | Acres Burned | Distance |
| 2022 | BURR | 4,633 | 39 km |
| 2008 | COMMANCHE RANCH | 4,488 | 47 km |
| 2008 | HOLMES | 3,331 | 97 km |
| 2022 | WEST NUECES | 1,893 | 98 km |
| 2008 | UNNAMED | 1,522 | 43 km |
| 2020 | MOODY | 1,070 | 78 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 52°F (11°C) | 0.7 in | Coldest |
| February | 57°F (14°C) | 1.0 in | |
| March | 65°F (18°C) | 0.7 in | |
| April | 72°F (22°C) | 1.7 in | |
| May | 78°F (26°C) | 2.8 in | |
| June | 84°F (29°C) | 3.1 in | Wettest |
| July | 86°F (30°C) | 1.7 in | Warmest |
| August | 85°F (30°C) | 1.9 in | |
| September | 80°F (27°C) | 3.1 in | |
| October | 72°F (22°C) | 2.3 in | |
| November | 61°F (16°C) | 0.9 in | |
| December | 54°F (12°C) | 0.7 in | Driest |
Piedras Negras has a seasonal temperature swing of 34°F / from 52°F in January to 86°F in July. Total annual precipitation is 20.5 inches, with June being the wettest month (3.1") and December the driest (0.7").