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Weather & Climate in Anderson, TX
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Anderson enjoys a temperate climate with an average annual temperature of 70°F (21°C). Winters average 53°F in January while summers reach 85°F in July. The area gets 306 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 50.8 inches (wetter than the 38-inch national average). Air quality is rated Good with a median AQI of 42. The city sits at an elevation of 323 feet.
Temperature
53°F Jan (12°C)
85°F Jul (29°C)
| Annual Average | 69.8°F |
| 29% above US avg | |
| January Average | 53°F (12°C) |
| July Average | 85°F (29°C) |
| Sunny Days | 306 days/yr |
Geography
| Elevation | 323 ft (98 m) |
| Area | 0.5 sq mi (1.3 km²) |
| Population Density | 420/sq mi |
| Coordinates | 30.4868°N, 95.9903°W |
| Timezone | America/Chicago |
| County | Grimes County County |
| Nearest Airport | Conroe/North Houston Regional (CXO) 35 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 57.0 / 100 |
| Social Vulnerability | 74.1 / 100 |
| Community Resilience | 24.5 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively Moderate |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | Relatively High |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
5 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.1.
| Feb 19, 2015 | 3 km N of Hallettsville, Texas | M3.1 | 145 km | 5 km |
| Oct 20, 2017 | 5 km W of Flatonia, Texas | M2.9 | 144 km | 3 km |
| Jan 4, 1995 | 1 km NW of Hallettsville, Texas | M2.7 | 148 km | 5 km |
| Aug 24, 2021 | 3 km NNW of Hallettsville, Texas | M2.6 | 146 km | 5 km |
| Apr 2, 2024 | 4 km SSW of Round Top, Texas | M2.5 | 86 km | 17 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
13 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Beryl | Category 1 | 92 mph | 132 km |
| 2021 | Nicholas | Category 1 | 75 mph | 190 km |
| 2020 | Laura | Category 4 | 150 mph | 248 km |
| 2020 | Delta | Category 2 | 104 mph | 282 km |
| 2017 | Harvey | Category 4 | 132 mph | 236 km |
| 2008 | Ike | Category 2 | 109 mph | 79 km |
| 2007 | Humberto | Category 1 | 92 mph | 188 km |
| 2005 | Rita | Category 3 | 121 mph | 181 km |
| 2003 | Claudette | Category 1 | 92 mph | 228 km |
| 1989 | Chantal | Category 1 | 81 mph | 182 km |
| 1989 | Jerry | Category 1 | 86 mph | 172 km |
| 1986 | Bonnie | Category 1 | 86 mph | 175 km |
| 1983 | Alicia | Category 3 | 115 mph | 99 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
454 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 27 fatalities, 251 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Dec 28, 2024 | EF3 | 74 km | 10.3 mi | 0 |
| Apr 22, 2020 | EF3 | 87 km | 28.5 mi | 3 |
| Apr 13, 2019 | EF3 | 81 km | 32.5 mi | 0 |
| Dec 25, 2012 | EF3 | 99 km | 9.7 mi | 0 |
| Mar 10, 2000 | EF3 | 67 km | 21.0 mi | 0 |
| Feb 5, 1986 | EF3 | 66 km | 5.0 mi | 2 |
| Dec 12, 1968 | EF3 | 57 km | 6.2 mi | 0 |
| Sep 20, 1967 | EF3 | 78 km | 19.9 mi | 0 |
| Sep 20, 1967 | EF3 | 78 km | 19.9 mi | 0 |
| Sep 22, 1965 | EF3 | 39 km | 0.8 mi | 0 |
| May 10, 1959 | EF3 | 66 km | 15.8 mi | 0 |
| Oct 14, 1957 | EF3 | 41 km | 1.0 mi | 0 |
| Mar 20, 1957 | EF3 | 84 km | 7.2 mi | 0 |
| Mar 20, 1957 | EF3 | 91 km | 16.9 mi | 0 |
| Apr 5, 1956 | EF3 | 42 km | 5.2 mi | 0 |
| Dec 2, 1953 | EF3 | 94 km | 3.3 mi | 0 |
| May 16, 1953 | EF3 | 92 km | 5.2 mi | 1 |
| Jun 5, 1950 | EF3 | 52 km | 23.9 mi | 0 |
| Mar 21, 2022 | EF2 | 78 km | 19.1 mi | 1 |
| Apr 24, 2019 | EF2 | 37 km | 1.7 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: RILEY ROAD (18,999 acres, 2011).
| Year | Name | Acres Burned | Distance |
| 2011 | RILEY ROAD | 18,999 | 32 km |
| 2019 | UNNAMED | 6,349 | 22 km |
| 2010 | RX BURN COMPARTMENT 86-87 | 5,501 | 70 km |
| 2011 | DYER MILL | 5,170 | 22 km |
| 2013 | UNNAMED | 5,033 | 39 km |
| 2020 | C-38/39/40 | 4,708 | 35 km |
| 2011 | S839 CONCORD ROBBINS | 4,388 | 84 km |
| 2013 | UNNAMED | 4,218 | 28 km |
| 2017 | UNNAMED | 4,195 | 40 km |
| 2022 | UNNAMED | 4,072 | 70 km |
| 2016 | UNNAMED | 4,014 | 35 km |
| 2020 | BIGWOODS C81/86 | 3,979 | 70 km |
| 2022 | UNNAMED | 3,972 | 36 km |
| 2010 | RX BURN C 36 39 | 3,832 | 36 km |
| 2022 | UNNAMED | 3,796 | 61 km |
| 2013 | UNNAMED | 3,489 | 21 km |
| 2010 | RX BURN COMPARTMENTS 111-112 | 3,238 | 85 km |
| 2011 | BAILEY | 3,136 | 93 km |
| 2021 | BIGWOODS C-80/85 | 3,135 | 67 km |
| 2010 | RX BURN C-61 WMA | 3,103 | 41 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 53°F (12°C) | 3.4 in | |
| February | 52°F (11°C) | 3.0 in | |
| March | 60°F (16°C) | 3.0 in | |
| April | 66°F (19°C) | 3.5 in | |
| May | 74°F (23°C) | 5.0 in | Wettest |
| June | 80°F (27°C) | 3.9 in | |
| July | 85°F (29°C) | 2.6 in | Warmest, Driest |
| August | 83°F (28°C) | 2.8 in | |
| September | 79°F (26°C) | 5.0 in | |
| October | 70°F (21°C) | 3.7 in | |
| November | 60°F (15°C) | 3.8 in | |
| December | 52°F (11°C) | 3.5 in | Coldest |
Anderson has a seasonal temperature swing of 32°F / from 52°F in December to 85°F in July. Total annual precipitation is 43.1 inches, with May being the wettest month (5.0") and July the driest (2.6").