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Weather & Climate in Dennis, TX
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Dennis enjoys a temperate climate with an average annual temperature of 65°F (18°C). Winters average 44°F in January while summers reach 85°F in July. The area gets 330 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 35.2 inches. Air quality is rated Good with a median AQI of 42. The city sits at an elevation of 762 feet.
Temperature
44°F Jan (7°C)
85°F Jul (30°C)
| Annual Average | 64.8°F |
| 20% above US avg | |
| January Average | 44°F (7°C) |
| July Average | 85°F (30°C) |
| Sunny Days | 330 days/yr |
Geography
| Elevation | 762 ft (232 m) |
| Area | 1.5 sq mi (4.0 km²) |
| Population Density | 921/sq mi |
| Coordinates | 32.6079°N, 97.9376°W |
| Timezone | America/Chicago |
| County | Hood County County |
| Nearest Airport | Mineral Wells Regional (MWL) 14 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 70.5 / 100 |
| Social Vulnerability | 38.7 / 100 |
| Community Resilience | 58.9 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
91 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.0.
| May 7, 2015 | 5 km N of Venus, Texas | M4.0 | 80 km | 3 km |
| Nov 28, 2013 | 6 km SSW of Perrin, Texas | M3.7 | 43 km | 5 km |
| Dec 9, 2013 | 8 km S of Perrin, Texas | M3.7 | 41 km | 5 km |
| Nov 20, 2013 | 1 km NNW of Azle, Texas | M3.6 | 50 km | 5 km |
| Dec 8, 2013 | 0 km NNE of Sanctuary, Texas | M3.6 | 48 km | 5 km |
| Jan 7, 2015 | 6 km NE of Irving, Texas | M3.6 | 101 km | 5 km |
| Jan 6, 2015 | 4 km ENE of Irving, Texas | M3.5 | 100 km | 6 km |
| Jun 24, 2012 | 3 km SSE of Briaroaks, Texas | M3.5 | 63 km | 5 km |
| Nov 25, 2013 | 3 km WNW of Sanctuary, Texas | M3.4 | 46 km | 5 km |
| Sep 30, 2012 | 4 km NW of Irving, Texas | M3.4 | 94 km | 5 km |
| May 19, 2018 | 8 km NW of Venus, Texas | M3.4 | 74 km | 5 km |
| May 18, 2015 | 5 km N of Irving, Texas | M3.3 | 96 km | 5 km |
| May 16, 2009 | 5 km NNW of Grand Prairie, Texas | M3.3 | 89 km | 9 km |
| Jun 15, 2012 | 5 km SSE of Briaroaks, Texas | M3.3 | 64 km | 5 km |
| Apr 2, 2015 | 5 km NNE of Irving, Texas | M3.3 | 98 km | 8 km |
| Jan 18, 2012 | 9 km SSE of Godley, Texas | M3.3 | 50 km | 5 km |
| May 3, 2015 | 4 km N of Irving, Texas | M3.2 | 96 km | 5 km |
| May 1, 2024 | 7 km S of Mansfield, Texas | M3.2 | 75 km | 6 km |
| Nov 29, 2013 | 1 km S of Pelican Bay, Texas | M3.1 | 51 km | 5 km |
| Jan 13, 2014 | 2 km ESE of Reno, Texas | M3.1 | 52 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
709 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 14 fatalities, 473 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 15, 2013 | EF4 | 28 km | 2.5 mi | 6 |
| Apr 25, 1990 | EF4 | 22 km | 10.0 mi | 0 |
| May 26, 1976 | EF4 | 72 km | 18.8 mi | 0 |
| Mar 21, 2022 | EF3 | 61 km | 34.5 mi | 0 |
| Oct 20, 2019 | EF3 | 100 km | 15.8 mi | 0 |
| Dec 26, 2015 | EF3 | 98 km | 8.5 mi | 0 |
| May 15, 2013 | EF3 | 57 km | 7.8 mi | 0 |
| Apr 16, 2002 | EF3 | 57 km | 2.1 mi | 0 |
| May 12, 2000 | EF3 | 95 km | 7.0 mi | 2 |
| Mar 28, 2000 | EF3 | 57 km | 4.0 mi | 2 |
| Mar 28, 2000 | EF3 | 78 km | 8.0 mi | 0 |
| May 12, 1982 | EF3 | 31 km | 9.0 mi | 0 |
| Oct 30, 1979 | EF3 | 98 km | 18.6 mi | 0 |
| Jun 6, 1979 | EF3 | 93 km | 7.1 mi | 0 |
| May 21, 1979 | EF3 | 83 km | 2.0 mi | 0 |
| May 26, 1976 | EF3 | 51 km | 3.8 mi | 0 |
| Nov 24, 1973 | EF3 | 58 km | 0.1 mi | 0 |
| Apr 23, 1973 | EF3 | 59 km | 2.5 mi | 0 |
| May 23, 1971 | EF3 | 95 km | 7.1 mi | 1 |
| Mar 26, 1961 | EF3 | 55 km | 1.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: PK COMPLEX (128,548 acres, 2011).
| Year | Name | Acres Burned | Distance |
| 2011 | PK COMPLEX | 128,548 | 56 km |
| 2022 | KIDD | 41,939 | 88 km |
| 2006 | CARBON | 33,013 | 90 km |
| 2009 | APRIL 9TH COMPLEX 1 | 22,099 | 67 km |
| 2009 | CEDAR MOUNTAIN | 16,589 | 93 km |
| 2009 | APRIL 9TH COMPLEX 2 | 13,805 | 90 km |
| 1996 | POOLVILLE FIRE | 12,128 | 45 km |
| 2022 | DEMPSEY | 11,576 | 40 km |
| 2022 | BIG L | 9,653 | 23 km |
| 2006 | HUCKABAY | 9,100 | 50 km |
| 2011 | CHERRY HOMES | 7,398 | 86 km |
| 2011 | ENMIN FIRE | 6,618 | 66 km |
| 2022 | CHALK MOUNTAIN | 6,461 | 43 km |
| 2011 | 101 RANCH | 5,861 | 53 km |
| 1996 | UNNAMED | 5,382 | 85 km |
| 2006 | CADDO II COMPLEX | 5,270 | 62 km |
| 2006 | BURWICK | 4,671 | 75 km |
| 2011 | CR 156 | 4,585 | 92 km |
| 2022 | LAZY | 4,355 | 57 km |
| 2011 | BRYSON COMPLEX | 4,287 | 74 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 44°F (7°C) | 1.6 in | Coldest, Driest |
| February | 49°F (9°C) | 2.1 in | |
| March | 57°F (14°C) | 2.5 in | |
| April | 65°F (18°C) | 3.0 in | |
| May | 73°F (23°C) | 4.6 in | Wettest |
| June | 80°F (27°C) | 3.3 in | |
| July | 85°F (30°C) | 2.1 in | Warmest |
| August | 84°F (29°C) | 2.2 in | |
| September | 77°F (25°C) | 3.1 in | |
| October | 66°F (19°C) | 3.5 in | |
| November | 55°F (13°C) | 2.1 in | |
| December | 46°F (8°C) | 1.7 in |
Dennis has a seasonal temperature swing of 41°F / from 44°F in January to 85°F in July. Total annual precipitation is 31.6 inches, with May being the wettest month (4.6") and January the driest (1.6").