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Weather & Climate in Dayton, TX
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Dayton enjoys a temperate climate with an average annual temperature of 69°F (21°C). Winters average 53°F in January while summers reach 84°F in July. The area gets 313 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 62.8 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 65 feet.
Temperature
53°F Jan (11°C)
84°F Jul (29°C)
| Annual Average | 69.1°F |
| 28% above US avg | |
| January Average | 53°F (11°C) |
| July Average | 84°F (29°C) |
| Sunny Days | 313 days/yr |
Geography
| Elevation | 65 ft (20 m) |
| Area | 21.1 sq mi (54.6 km²) |
| Population Density | 297/sq mi |
| Coordinates | 30.0132°N, 94.9360°W |
| Timezone | America/Chicago |
| County | Liberty County County |
| Nearest Airport | George Bush Intcntl/Houston (IAH) 24 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 79.5 / 100 |
| Social Vulnerability | 67.1 / 100 |
| Community Resilience | 19.2 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Relatively Moderate |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Low |
| Lightning | Very High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
| Coastal Flood | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Hurricane History
18 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 | 130 km |
| 2021 | Nicholas | Category 1 | 75 mph | 154 km |
| 2020 | Laura | Category 4 | 150 mph | 157 km |
| 2020 | Delta | Category 3 | 115 mph | 168 km |
| 2019 | Barry | Category 1 | 75 mph | 268 km |
| 2017 | Harvey | Category 4 | 132 mph | 272 km |
| 2008 | Ike | Category 2 | 109 mph | 35 km |
| 2008 | Gustav | Category 1 | — | 294 km |
| 2007 | Humberto | Category 1 | 92 mph | 77 km |
| 2005 | Rita | Category 4 | 127 mph | 97 km |
| 2003 | Claudette | Category 1 | 92 mph | 198 km |
| 2002 | Lili | Category 1 | 92 mph | 254 km |
| 1989 | Jerry | Category 1 | 86 mph | 91 km |
| 1989 | Chantal | Category 1 | 81 mph | 69 km |
| 1986 | Bonnie | Category 1 | 86 mph | 63 km |
| 1985 | Juan | Category 1 | 86 mph | 203 km |
| 1985 | Danny | Category 1 | 92 mph | 215 km |
| 1983 | Alicia | Category 3 | 115 mph | 65 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
826 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 34 fatalities, 904 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Nov 21, 1992 | EF4 | 46 km | 30.0 mi | 0 |
| Sep 12, 1961 | EF4 | 79 km | 1.0 mi | 8 |
| Dec 28, 2024 | EF3 | 46 km | 67.9 mi | 0 |
| Dec 28, 2024 | EF3 | 41 km | 10.3 mi | 0 |
| Jan 24, 2023 | EF3 | 55 km | 23.3 mi | 0 |
| Apr 22, 2020 | EF3 | 95 km | 28.5 mi | 3 |
| Mar 30, 2002 | EF3 | 45 km | 0.7 mi | 0 |
| Jan 1, 1999 | EF3 | 47 km | 5.5 mi | 0 |
| Nov 21, 1992 | EF3 | 14 km | 32.0 mi | 0 |
| Feb 5, 1986 | EF3 | 59 km | 5.0 mi | 2 |
| Jan 31, 1983 | EF3 | 73 km | 1.0 mi | 0 |
| Dec 13, 1977 | EF3 | 42 km | 25.1 mi | 1 |
| Mar 8, 1976 | EF3 | 86 km | 12.7 mi | 0 |
| Oct 28, 1974 | EF3 | 36 km | 3.3 mi | 1 |
| Oct 28, 1974 | EF3 | 69 km | 9.6 mi | 1 |
| Sep 13, 1974 | EF3 | 92 km | 3.6 mi | 0 |
| Sep 8, 1969 | EF3 | 44 km | 0.8 mi | 0 |
| May 27, 1969 | EF3 | 35 km | 1.5 mi | 3 |
| Mar 23, 1969 | EF3 | 66 km | 0.5 mi | 0 |
| Dec 12, 1968 | EF3 | 59 km | 6.2 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 | 89 km |
| 2007 | 08 UNIT 1 RX | 16,981 | 78 km |
| 2010 | MCR UNIT 2 RX | 14,471 | 83 km |
| 2000 | E WHITES 2 | 13,996 | 81 km |
| 2012 | WF HOLIDAY 1-2 | 13,251 | 82 km |
| 2005 | RX UNIT 12 1117 2005 | 10,728 | 82 km |
| 1997 | WILD COW BAY | 10,069 | 90 km |
| 2020 | TXMCR-FY20-RX-W | 10,033 | 89 km |
| 2023 | H AND H COMPLEX | 9,476 | 85 km |
| 1992 | UNNAMED | 9,344 | 83 km |
| 2003 | UNIT 8 WILDFIRE | 9,076 | 89 km |
| 1986 | STAR LAKE | 8,876 | 81 km |
| 2015 | WF UNIT 1 1/2 | 8,840 | 82 km |
| 1997 | GRIT ROAD | 8,599 | 89 km |
| 1989 | UNNAMED | 8,539 | 76 km |
| 1994 | UNIT1ARSON | 8,287 | 79 km |
| 1997 | MCF WEST | 7,786 | 83 km |
| 1993 | UNNAMED | 7,714 | 76 km |
| 2017 | WF PERKINS BLOWOUT | 7,646 | 82 km |
| 2011 | PIPELINE | 7,167 | 82 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 53°F (11°C) | 4.3 in | Coldest |
| February | 55°F (13°C) | 3.5 in | |
| March | 61°F (16°C) | 3.5 in | Driest |
| April | 68°F (20°C) | 3.6 in | |
| May | 75°F (24°C) | 5.5 in | |
| June | 81°F (27°C) | 6.2 in | Wettest |
| July | 84°F (29°C) | 4.2 in | Warmest |
| August | 83°F (28°C) | 3.8 in | |
| September | 78°F (26°C) | 5.6 in | |
| October | 70°F (21°C) | 4.8 in | |
| November | 60°F (16°C) | 4.8 in | |
| December | 53°F (12°C) | 4.5 in |
Dayton has a seasonal temperature swing of 31°F / from 53°F in January to 84°F in July. Total annual precipitation is 54.4 inches, with June being the wettest month (6.2") and March the driest (3.5").