Weather & Climate in Lewisville, TX
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Lewisville enjoys a temperate climate with an average annual temperature of 67°F (19°C). Winters average 46°F in January while summers reach 86°F in July. Annual precipitation totals 36.5 inches. Air quality is rated Good with a median AQI of 40. 78% of days have good air quality. The city sits at an elevation of 486 feet.
Temperature
46°F Jan (8°C)
86°F Jul (30°C)
| Annual Average | 66.5°F |
| 23% above US avg | |
| January Average | 46°F (8°C) |
| July Average | 86°F (30°C) |
Geography
| Elevation | 486 ft (148 m) |
| Area | 40.7 sq mi (105.3 km²) |
| Population Density | 3,156/sq mi |
| Coordinates | 33.0507°N, 96.9746°W |
| Timezone | America/Chicago |
| County | Collin County County |
| Nearest Airport | Dallas-Fort Worth International (DFW) 11 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 40.0 |
| Rating | Good |
| Good Days % | 77.5% |
| Unhealthy Days | 11 |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 98.9 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 58.4 / 100 |
Hazard Breakdown
| Tornado | Very High |
| Hurricane | Relatively Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively Low |
| Flood | Relatively High |
| Hail | Very High |
| Strong Wind | Relatively High |
| Heat Wave | Relatively High |
| Winter Weather | Relatively High |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively High |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
143 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 | 64 km | 3 km |
| Nov 28, 2013 | 6 km SSW of Perrin, Texas | M3.7 | 104 km | 5 km |
| Dec 9, 2013 | 8 km S of Perrin, Texas | M3.7 | 102 km | 5 km |
| Nov 20, 2013 | 1 km NNW of Azle, Texas | M3.6 | 56 km | 5 km |
| Dec 8, 2013 | 0 km NNE of Sanctuary, Texas | M3.6 | 59 km | 5 km |
| Jan 7, 2015 | 6 km NE of Irving, Texas | M3.6 | 24 km | 5 km |
| Jan 6, 2015 | 4 km ENE of Irving, Texas | M3.5 | 25 km | 6 km |
| Mar 4, 2013 | 5 km S of Tishomingo, Oklahoma | M3.5 | 130 km | 5 km |
| Jun 8, 2004 | 6 km N of Lone Grove, Oklahoma | M3.5 | 134 km | 5 km |
| Jun 24, 2012 | 3 km SSE of Briaroaks, Texas | M3.5 | 71 km | 5 km |
| Apr 28, 2013 | 4 km NNW of Oakland, Oklahoma | M3.5 | 122 km | 5 km |
| Nov 25, 2013 | 3 km WNW of Sanctuary, Texas | M3.4 | 62 km | 5 km |
| Sep 23, 2013 | 4 km WNW of Marietta, Oklahoma | M3.4 | 101 km | 5 km |
| May 19, 2018 | 8 km NW of Venus, Texas | M3.4 | 66 km | 5 km |
| May 31, 1997 | 3 km ESE of Neylandville, Texas | M3.4 | 95 km | 5 km |
| Sep 30, 2012 | 4 km NW of Irving, Texas | M3.4 | 23 km | 5 km |
| Jun 15, 2012 | 5 km SSE of Briaroaks, Texas | M3.3 | 71 km | 5 km |
| May 31, 2002 | 15 km S of Cornish, Oklahoma | M3.3 | 124 km | 5 km |
| Jan 18, 2012 | 9 km SSE of Godley, Texas | M3.3 | 89 km | 5 km |
| May 16, 2009 | 5 km NNW of Grand Prairie, Texas | M3.3 | 29 km | 9 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
1 hurricane (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.
| Year | Name | Category | Max Wind | Closest |
| 2008 | Ike | Category 1 | - | 277 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tornado History
905 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 52 fatalities, 1,653 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 27, 2024 | EF4 | 97 km | 26.8 mi | 1 |
| Dec 26, 2015 | EF4 | 46 km | 13.0 mi | 10 |
| Apr 25, 1994 | EF4 | 54 km | 6.0 mi | 3 |
| Apr 25, 1990 | EF4 | 85 km | 10.0 mi | 0 |
| May 26, 1976 | EF4 | 91 km | 18.8 mi | 0 |
| May 25, 2024 | EF3 | 39 km | 0.7 mi | 0 |
| May 25, 2024 | EF3 | 89 km | 47.3 mi | 7 |
| Oct 20, 2019 | EF3 | 21 km | 15.8 mi | 0 |
| Dec 26, 2015 | EF3 | 66 km | 8.5 mi | 0 |
| Apr 3, 2012 | EF3 | 58 km | 7.7 mi | 0 |
| May 9, 2006 | EF3 | 55 km | 9.3 mi | 3 |
| Apr 16, 2002 | EF3 | 48 km | 2.1 mi | 0 |
| Mar 28, 2000 | EF3 | 48 km | 4.0 mi | 2 |
| Mar 28, 2000 | EF3 | 38 km | 8.0 mi | 0 |
| May 7, 1995 | EF3 | 93 km | 34.1 mi | 3 |
| May 7, 1995 | EF3 | 73 km | 26.0 mi | 2 |
| Dec 13, 1984 | EF3 | 49 km | 10.0 mi | 0 |
| Apr 2, 1982 | EF3 | 91 km | 32.0 mi | 1 |
| May 5, 1978 | EF3 | 73 km | 29.9 mi | 0 |
| May 26, 1976 | EF3 | 20 km | 4.5 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Wildfire History
19 wildfires (100+ acres) recorded within 100 km. Largest: POOLVILLE FIRE (12,128 acres, 1996).
| Year | Name | Acres Burned | Distance |
| 1996 | POOLVILLE FIRE | 12,128 | 82 km |
| 2009 | MONTAGUE COUNTY COMPLEX | 6,505 | 84 km |
| 2005 | CALLISBURG | 5,797 | 79 km |
| 2013 | ROCKY POINT | 3,165 | 97 km |
| 2008 | UNNAMED | 2,944 | 67 km |
| 2005 | 730 COMPLEX | 2,438 | 79 km |
| 2018 | FARMERS ROAD | 2,383 | 68 km |
| 2022 | UNNAMED | 2,362 | 67 km |
| 2009 | TWO BUSH ROAD | 2,082 | 95 km |
| 1996 | UNNAMED | 2,067 | 91 km |
| 2005 | 200 MOUNTAIN RIDGE | 2,051 | 79 km |
| 2009 | HARRIS | 1,875 | 98 km |
| 1992 | UNNAMED | 1,854 | 82 km |
| 2010 | LBJ RX UNITS 14-15-16-26-76 | 1,848 | 74 km |
| 2022 | UNNAMED | 1,827 | 74 km |
| 1996 | CLOWER | 1,489 | 74 km |
| 1990 | AUTOBON | 1,427 | 72 km |
| 2023 | DOUBLE BACK | 1,275 | 89 km |
| 2019 | UNNAMED | 1,144 | 74 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 46°F (8°C) | 2.2 in | Coldest |
| February | 51°F (10°C) | 2.3 in | |
| March | 58°F (15°C) | 3.4 in | |
| April | 66°F (19°C) | 3.4 in | |
| May | 74°F (23°C) | 4.4 in | Wettest |
| June | 82°F (28°C) | 3.8 in | |
| July | 86°F (30°C) | 2.3 in | Warmest |
| August | 86°F (30°C) | 2.0 in | Driest |
| September | 79°F (26°C) | 2.8 in | |
| October | 68°F (20°C) | 4.3 in | |
| November | 56°F (14°C) | 2.6 in | |
| December | 48°F (9°C) | 3.0 in |
Lewisville has a seasonal temperature swing of 39°F / from 46°F in January to 86°F in July. Total annual precipitation is 36.5 inches, with May being the wettest month (4.4") and August the driest (2.0").