Dallas, located in northern Texas, features a humid subtropical climate with hot, humid summers and mild winters. The city experiences four distinct seasons, with most rainfall occurring in spring and early summer. Sunshine is abundant, but weather can be unpredictable, ranging from thunderstorms to occasional cold snaps, making Dallas a dynamic destination year-round.
The best times to travel section shows how the months compare for a visit, so you can find the time of year that fits what you want to do.
Background colours of the months:
The colour shows the typical temperature: yellow (hot), green (mild) and blue (cold). How strong the colour is shows the travel season: full colour means high season, soft colour means shoulder season and soft-striped means off season.
Weather symbols:
Each month has one symbol showing what the weather is typically like, such as hot and sunny, freezing or a rainy or snowy season. Use them to quickly spot months that match the weather you want, or to avoid the ones that don't.
Crowdedness:
The people icon shows how busy the place usually is. The more people, the more crowded it gets.
Additional notes:
The grey info boxes point out special things worth knowing, like recurring weather issues or seasonal events.
Dallas’s climate is characterised by hot, humid summers and mild, variable winters. Summer (June to September) is the hottest season, with average highs of 33–36°C and occasional peaks above 40°C. Humidity can make the heat feel more intense, but thunderstorms often break up hot spells, bringing brief, heavy rainfall. Nights are warm, rarely dropping below 23°C. Sunshine is plentiful, with up to 232 sunny or partly sunny days per year.
Winter (December to February) is generally mild, with daytime highs of 12–19°C and lows that can dip below freezing during cold snaps. Snowfall is rare, averaging about 2–4 cm annually, but freezing rain and brief periods of extreme cold can occur. Spring (March to May) and autumn (September to November) are transitional seasons, offering warm, pleasant weather and vibrant wildflowers in spring. Rainfall is heaviest in spring and early summer, often accompanied by thunderstorms, hail, and occasionally tornadoes. Winds are typically light to moderate, but gusty conditions can occur during storms. Dallas’s flat landscape and proximity to the Great Plains contribute to rapid weather changes and dramatic temperature swings.
| Average climate data for Dallas, United States | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Average maximum temperature (°C) | 12 | 14 | 20 | 24 | 28 | 33 | 35 | 36 | 31 | 25 | 18 | 13 | 36 |
| Average minimum temperature (°C) | 4 | 6 | 10 | 14 | 18 | 23 | 25 | 25 | 21 | 15 | 10 | 5 | 4 |
| Average precipitation (mm) | 43 | 41 | 73 | 67 | 107 | 71 | 51 | 66 | 60 | 92 | 49 | 48 | 767 |
| Average rainfall days (days) | 7 | 9 | 14 | 13 | 16 | 13 | 13 | 13 | 14 | 12 | 8 | 9 | 142 |
| Average snowfall (mm) | 4 | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 18 |
| Average snowfall days (days) | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| Average relative humidity (%) | 65 | 71 | 71 | 69 | 72 | 67 | 60 | 55 | 62 | 64 | 68 | 67 | 66 |
| Average wind speed (km/h) | 14 | 16 | 16 | 16 | 14 | 13 | 12 | 11 | 11 | 13 | 14 | 14 | 14 |
| Average daily daylight hours (h) | 10 | 11 | 12 | 13 | 13 | 14 | 14 | 13 | 12 | 11 | 10 | 10 | 12 |
| Average daily sunshine hours (h) | 5 | 6 | 6 | 8 | 8 | 10 | 11 | 11 | 8 | 6 | 5 | 5 | 7 |
| Average cloud coverage (%) | 31 | 39 | 39 | 36 | 35 | 25 | 22 | 19 | 28 | 29 | 32 | 38 | 31 |
| Average UV index | 3 | 4 | 5 | 5 | 7 | 7 | 7 | 7 | 6 | 4 | 4 | 3 | 5 |
The best time to visit Dallas is in spring (March to May) and autumn (late September to early November), when temperatures are comfortable, humidity is lower, and outdoor festivals abound. These seasons offer pleasant weather for sightseeing, parks, and events, with fewer extremes than the hot summer or the variable winter.
The least favourable time to visit Dallas is during the peak summer months of July and August, when temperatures often exceed 36°C, humidity is high, and heatwaves are common. Outdoor activities can be uncomfortable, and brief but intense thunderstorms may disrupt plans. Winter is also less ideal for those seeking consistently warm weather.
Dallas has a humid subtropical climate with hot, humid summers and mild winters. Spring and autumn are warm and pleasant, while winter can bring occasional cold snaps and rare snow. Rainfall is heaviest in spring and early summer.
The best times to visit Dallas are spring (March–May) and autumn (late September–November), when temperatures are comfortable, humidity is lower, and outdoor events and festivals are in full swing.
Snow is rare in Dallas, with an average of 2–4 cm per year. When it does occur, it is usually light and melts quickly. Freezing rain and brief cold snaps are more common during winter.
Summer temperatures in Dallas often reach 33–36°C, with occasional peaks above 40°C. High humidity can make it feel even hotter, and heatwaves are common in July and August.
Yes, Dallas can experience severe thunderstorms, especially in spring, sometimes accompanied by hail or tornadoes. Summer storms are usually brief but intense. Always check the weather forecast and be prepared for rapid changes.
In summer, bring lightweight clothing, sun cream, and a hat. For spring and autumn, pack layers and an umbrella. In winter, bring a warm coat and layers for chilly nights. Comfortable shoes are recommended year-round.
Yes, Dallas is humid, especially in summer when humidity levels are high. Air conditioning is common in buildings and vehicles to provide relief from the heat and humidity.
The warmest month, with the highest average maximum temperature, is August (35.7 °C). The month with the lowest average maximum temperature is January (12.4 °C). Overall, the average maximum temperature over the whole year is 24 °C.
The month with the highest average minimum temperature is August (25.1 °C). The coldest month, with the lowest average minimum temperature, is January (3.9 °C). Overall, the average minimum temperature over the whole year is 14.7 °C.
The wettest month, with the highest amount of precipitation, is May (106.5 mm). The driest month, with the least amount of precipitation, is February (41.4 mm). Over the whole year there are 766.7 mm of rainfall on average.
The month with the most days of rain is May (15.8 days). The month with the fewest days of rain is January (6.8 days). Over the whole year there are 141.6 days of rain on average.
The month with the most snowfall is February (11 mm). The months with the least snowfall are March, April, May, June, July, August, September and October (0 mm). Over the whole year there are 17.9 mm of snowfall on average.
The month with the most days of snowfall is February (1.2 days). The months with the fewest days of snowfall are March, May, July, August and October (0 days). Over the whole year there are 2.4 days of snowfall on average.
The month with the highest average relative humidity is May (72.5 %). The month with the lowest average relative humidity is August (54.9 %). The overall average relative humidity over the whole year is 65.9 %.
The windiest month, with the highest average wind speed, is April (16 km/h). The calmest month, with the lowest average wind speed, is September (10.8 km/h). The overall average wind speed over the whole year is 13.6 km/h.
The month with the cloudiest skies, so the highest cloud coverage, is March (39 %). The month with the clearest skies, so the lowest cloud coverage, is August (18.9 %). Over the whole year there is an average cloud coverage of 31 %.
The month with the longest days, so the most daylight, is June (Average daylight: 14 h). The month with the shortest days, so the least daylight, is December (Average daylight: 10 h). Over the whole year there are 11.9 h of daylight per day on average.
The month with the most sunshine per day is August (Average sunshine: 11 h). The month with the least sunshine per day is November (Average sunshine: 5 h). Over the whole year there are 7.5 h of sunlight per day on average.
The months with the highest average UV index are May, June, July and August (UV index: 7). The months with the lowest average UV index are January and December (UV index: 3). Over the whole year the average UV index is 5.2.
