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Weather & Climate in Melvin, TX
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Melvin enjoys a temperate climate with an average annual temperature of 64°F (18°C). Winters average 44°F in January while summers reach 82°F in July. The area gets 328 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 26.5 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 42. The city sits at an elevation of 1,837 feet.
Temperature
44°F Jan (7°C)
82°F Jul (28°C)
| Annual Average | 63.9°F |
| 18% above US avg | |
| January Average | 44°F (7°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 328 days/yr |
Geography
| Elevation | 1,837 ft (560 m) |
| Area | 0.5 sq mi (1.2 km²) |
| Population Density | 267/sq mi |
| Coordinates | 31.1992°N, 99.5813°W |
| Timezone | America/Chicago |
| County | McCulloch County County |
| Nearest Airport | San Angelo Regional/Mathis Field (SJT) 55 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 10.1 / 100 |
| Social Vulnerability | 73.7 / 100 |
| Community Resilience | 37.5 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | Relatively Moderate |
| Cold Wave | Very Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
1 earthquake (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.3.
| Jun 23, 2024 | 26 km WNW of Robert Lee, Texas | M3.3 | 141 km | 9 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
256 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 5 fatalities, 60 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 19, 1976 | EF5 | 76 km | 10.5 mi | 0 |
| May 11, 1999 | EF4 | 74 km | 7.0 mi | 1 |
| May 18, 2019 | EF3 | 74 km | 7.8 mi | 0 |
| May 18, 2019 | EF3 | 73 km | 5.8 mi | 0 |
| May 18, 2019 | EF3 | 60 km | 18.0 mi | 0 |
| May 14, 1995 | EF3 | 62 km | 5.0 mi | 0 |
| Mar 14, 1982 | EF3 | 92 km | 40.5 mi | 0 |
| Apr 10, 1979 | EF3 | 58 km | 25.0 mi | 0 |
| Mar 2, 1979 | EF3 | 51 km | 7.1 mi | 0 |
| May 30, 1976 | EF3 | 15 km | 3.6 mi | 0 |
| May 13, 1975 | EF3 | 72 km | 0.1 mi | 2 |
| May 6, 1969 | EF3 | 64 km | 41.6 mi | 0 |
| Apr 30, 1952 | EF3 | 89 km | 0.5 mi | 0 |
| May 2, 2024 | EF2 | 33 km | 6.1 mi | 0 |
| May 2, 2024 | EF2 | 70 km | 4.5 mi | 0 |
| May 18, 2019 | EF2 | 98 km | 2.1 mi | 0 |
| Jan 15, 2017 | EF2 | 38 km | 2.0 mi | 0 |
| May 28, 2016 | EF2 | 89 km | 4.8 mi | 0 |
| Mar 12, 1999 | EF2 | 53 km | 8.0 mi | 0 |
| Mar 12, 1999 | EF2 | 44 km | 2.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: SAN SABA FIRE (12,896 acres, 1993).
| Year | Name | Acres Burned | Distance |
| 1993 | SAN SABA FIRE | 12,896 | 61 km |
| 2020 | GATE 5 | 11,457 | 40 km |
| 1993 | MENARD FIRE | 10,463 | 46 km |
| 2015 | EATON CEMETERY | 10,441 | 67 km |
| 2020 | MAYS | 9,736 | 46 km |
| 2022 | CREWS GAP | 8,134 | 75 km |
| 2011 | OASIS | 7,919 | 95 km |
| 1999 | WILLIAMS RANCH FIRE | 6,226 | 75 km |
| 2015 | HEAD OF THE RIVER RANCH | 5,205 | 84 km |
| 2005 | TALPA | 5,117 | 61 km |
| 2003 | UNNAMED | 4,490 | 56 km |
| 1996 | UNNAMED | 3,951 | 33 km |
| 2011 | JAMES RIVER ROAD | 3,918 | 76 km |
| 2020 | BUFFALO CREEK | 3,630 | 75 km |
| 2019 | ROCKING CHAIR RANCH | 3,410 | 66 km |
| 2015 | LOG CABIN | 3,391 | 60 km |
| 2005 | UNNAMED | 3,133 | 43 km |
| 2000 | UNNAMED | 2,928 | 52 km |
| 2011 | CAMP BOWIE | 2,652 | 79 km |
| 2007 | ART | 2,623 | 66 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 44°F (7°C) | 1.1 in | Coldest, Driest |
| February | 50°F (10°C) | 1.5 in | |
| March | 57°F (14°C) | 1.4 in | |
| April | 65°F (18°C) | 2.0 in | |
| May | 73°F (23°C) | 3.5 in | |
| June | 79°F (26°C) | 3.0 in | |
| July | 82°F (28°C) | 2.0 in | Warmest |
| August | 82°F (28°C) | 2.4 in | |
| September | 76°F (24°C) | 3.5 in | Wettest |
| October | 67°F (19°C) | 2.5 in | |
| November | 55°F (13°C) | 1.4 in | |
| December | 48°F (9°C) | 1.1 in |
Melvin has a seasonal temperature swing of 38°F / from 44°F in January to 82°F in July. Total annual precipitation is 25.3 inches, with September being the wettest month (3.5") and January the driest (1.1").