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Weather & Climate in Calvert, TX
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Calvert enjoys a temperate climate with an average annual temperature of 68°F (20°C). Winters average 50°F in January while summers reach 83°F in July. The area gets 303 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 38.6 inches. Air quality is rated Good with a median AQI of 42. The city sits at an elevation of 334 feet.
Temperature
50°F Jan (10°C)
83°F Jul (29°C)
| Annual Average | 68.0°F |
| 26% above US avg | |
| January Average | 50°F (10°C) |
| July Average | 83°F (29°C) |
| Sunny Days | 303 days/yr |
Geography
| Elevation | 334 ft (102 m) |
| Area | 3.9 sq mi (10.1 km²) |
| Population Density | 247/sq mi |
| Coordinates | 30.9791°N, 96.6715°W |
| Timezone | America/Chicago |
| County | Milam County County |
| Nearest Airport | H H Coffield Regional (RCK) 31 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 58.1 / 100 |
| Social Vulnerability | 93.8 / 100 |
| Community Resilience | 34.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively High |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
3 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M2.9.
| Sep 3, 2015 | 7 km NNE of Leander, Texas | M2.9 | 117 km | 5 km |
| Jun 12, 2011 | 4 km NNW of Plum Grove, Texas | M2.7 | 143 km | 5 km |
| Apr 2, 2024 | 4 km SSW of Round Top, Texas | M2.5 | 107 km | 17 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
11 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 3.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Beryl | Category 1 | 92 mph | 198 km |
| 2021 | Nicholas | Category 1 | 75 mph | 260 km |
| 2017 | Harvey | Category 2 | 75 mph | 261 km |
| 2008 | Ike | Category 2 | 109 mph | 131 km |
| 2007 | Humberto | Category 1 | 92 mph | 273 km |
| 2005 | Rita | Category 3 | 115 mph | 252 km |
| 2003 | Claudette | Category 1 | 92 mph | 266 km |
| 1989 | Chantal | Category 1 | 81 mph | 267 km |
| 1989 | Jerry | Category 1 | 86 mph | 255 km |
| 1986 | Bonnie | Category 1 | 86 mph | 257 km |
| 1983 | Alicia | Category 3 | 115 mph | 181 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
414 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 163 fatalities, 914 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 27, 1997 | EF5 | 92 km | 5.1 mi | 27 |
| May 11, 1953 | EF5 | 78 km | 20.9 mi | 114 |
| Mar 10, 1973 | EF4 | 63 km | 23.3 mi | 6 |
| Apr 21, 1952 | EF4 | 94 km | 2.3 mi | 0 |
| Apr 13, 2019 | EF3 | 11 km | 32.5 mi | 0 |
| Mar 10, 2000 | EF3 | 62 km | 21.0 mi | 0 |
| May 27, 1997 | EF3 | 73 km | 3.7 mi | 0 |
| May 27, 1997 | EF3 | 79 km | 1.4 mi | 0 |
| Apr 27, 1990 | EF3 | 71 km | 4.0 mi | 0 |
| Mar 14, 1990 | EF3 | 80 km | 9.0 mi | 0 |
| May 17, 1989 | EF3 | 94 km | 3.0 mi | 1 |
| May 26, 1976 | EF3 | 84 km | 2.0 mi | 2 |
| May 10, 1959 | EF3 | 24 km | 15.8 mi | 0 |
| Mar 20, 1957 | EF3 | 77 km | 16.9 mi | 0 |
| Mar 20, 1957 | EF3 | 80 km | 7.2 mi | 0 |
| Apr 5, 1956 | EF3 | 44 km | 5.2 mi | 0 |
| Apr 30, 1954 | EF3 | 97 km | 139.9 mi | 0 |
| Dec 2, 1953 | EF3 | 60 km | 3.3 mi | 0 |
| Jun 5, 1950 | EF3 | 93 km | 23.9 mi | 0 |
| May 22, 2024 | EF2 | 75 km | 2.8 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
14 wildfires (100+ acres) recorded within 100 km. Largest: S839 CONCORD ROBBINS (4,388 acres, 2011).
| Year | Name | Acres Burned | Distance |
| 2011 | S839 CONCORD ROBBINS | 4,388 | 57 km |
| 2011 | C#491 | 3,616 | 72 km |
| 2011 | CRAB PRAIRIE | 2,933 | 85 km |
| 2016 | UNNAMED | 2,832 | 98 km |
| 2024 | SHNF COMP 1 / 2 / 3 RX | 2,292 | 98 km |
| 2011 | MIDWAY | 2,287 | 91 km |
| 2010 | COMPARTMENTS 1/4 RX | 2,252 | 99 km |
| 2010 | RX BURN COMPARTMENTS 18-19 | 1,851 | 97 km |
| 2014 | UNNAMED | 1,477 | 97 km |
| 2009 | UNNAMED | 1,445 | 97 km |
| 2013 | UNNAMED | 1,315 | 99 km |
| 2020 | COMP 5 | 1,233 | 97 km |
| 2022 | SHNF COMP 1 | 1,224 | 97 km |
| 2022 | UNNAMED | 1,117 | 100 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 50°F (10°C) | 2.5 in | Coldest |
| February | 53°F (12°C) | 2.6 in | |
| March | 61°F (16°C) | 2.5 in | |
| April | 67°F (20°C) | 3.4 in | |
| May | 74°F (24°C) | 4.7 in | Wettest |
| June | 81°F (27°C) | 3.1 in | |
| July | 83°F (29°C) | 2.0 in | Driest |
| August | 84°F (29°C) | 2.0 in | Warmest |
| September | 79°F (26°C) | 4.1 in | |
| October | 69°F (21°C) | 3.7 in | |
| November | 59°F (15°C) | 3.0 in | |
| December | 51°F (11°C) | 2.6 in |
Calvert has a seasonal temperature swing of 34°F / from 50°F in January to 84°F in August. Total annual precipitation is 36.2 inches, with May being the wettest month (4.7") and July the driest (2.0").