Climate and monthly weather forecastDallas, TX
Climate and monthly weather forecast
The climate of Dallas
Dallas, Texas, USA, falls under the Köppen climate classification of Cfa, indicating a humid subtropical climate with no dry season. Occupying a geographical position in the Southern Central part of the United States, Dallas experiences a notable range of climatic variations throughout the year. The temperature swings from an average low of 39.2°F (4°C) in the colder months to as high as 96.1°F (35.6°C) over the summer.Variations in other weather parameters also present a dynamic climate picture for Dallas. Relative humidity ranges between 55% and 72% over the year, with the highest levels typically appearing in the warmer months. Rainfall registers a high of 4.13" (105mm) in May, accompanied by 15.8 rainy days on average, before dipping to a low of 1.61" (41mm) in February. In terms of wind speeds, the city experiences a progressive decrease in wind speed from 9.9mph (15.9km/h) in April to 6.6mph (10.6km/h) in September. Visibility, on the other hand, maintains a steady level of 6 miles throughout the year.
Weather patterns in Dallas reveal a specific anomaly, particularly in the rainfall distribution throughout the year. January registers the minimum rainfall of 1.61" (41mm) while the highest rainfall of 4.13" (105mm) descends upon Dallas in May. Furthermore, the months of December and January display a minor possibility of snowfall with a maximum of approximately 0.16" (4mm).
The best time to visit Dallas
As the weather parameters indicate, the best time to visit Dallas is in the transitional seasons of spring and autumn. During this period, temperatures reach a comfortable range that makes outdoor activities pleasurable. Spring, from March to May, sees the temperature moving from a pleasant 67.1°F (19.5°C) to a warm 82°F (27.8°C).Autumn, running from September to November, has temperatures decreasing from 87.8°F (31°C) to a cool 64.6°F (18.1°C). Rainfall during these seasons are significantly less than in summer, ranging from 1.93" (49mm) in November to 3.66" (93mm) in October, thus ensuring plenty of opportunities to explore the city in comfortable weather. It's worthy to mention that the city enjoys a sunshine duration ranging from a minimum of 5.9 hours in November to a maximum of 8.6 hours in September.
The worst time to visit Dallas
The least favorable time to visit Dallas is between June and August. This period marks the city's summer season during which temperatures peak and can reach up to 96.1°F (35.6°C), often accompanied by a high relative humidity of 66% to 72%. Rainfall, though not as high as in May, remains significant, particularly in June where it measures 2.76" (70mm), leading to the possibility of outdoor activities being hampered by weatherSpring weather in Dallas
March to May ushers in the spring season in Dallas, displaying mild to warm weather conditions. Throughout spring, the temperature gradually rises from 67.1°F (19.5°C) in March to 82°F (27.8°C) by May. Rainfall levels rise steadily, culminating in the city's maximum rainfall of 4.13" (105mm) in May. A gentle wind blows at an average speed of 9.8mph (15.8km/h) to 8.9mph (14.3km/h) from March to May, and the city has an average of 12 to 13 hours of daylight during spring.Summer weather in Dallas
During the summer period from June to August, Dallas experiences its hottest weather. The temperature heightens progressively to reach its annual maximum of 96.1°F (35.6°C) in August. Even though summer represents the city's warmest season, it also registers a plummet in wind speeds, falling to 6.9mph (11.1km/h) in August. Independence from rain is not possible during the summer, with June experiencing rainfall of 2.76" (70mm).Autumn weather in Dallas
Autumn in Dallas, spanning from September to November, witnesses gradually cooling temperatures from the high 87.8°F (31°C) in September to 64.6°F (18.1°C) by November. Interestingly, while overall temperatures are dropping, Dallas sees a slight increase in wind speed, from 6.6mph (10.6km/h) in September to 8.6mph (13.8km/h) in November. Autumn receives a relatively higher amount of rainfall compared to the other seasons, with October registering the second-highest rainfall of the year at 3.66" (93mm).Winter weather in Dallas
Winter descends upon Dallas from December to February featuring temperatures that fluctuate between 55.6°F (13.1°C) to 39.2°F (4°C). December and January are the only two months with a slight chance of snow, though accumulations are minimal. February, despite being the driest month in terms of rainfall, has the highest relative humidity level of 70%. Additionally, winter brings with it the year’s shortest daylight duration, with December and January providing roughly 10 hours of daylight.Weather in January
In Dallas, the year starts with a balanced combination of cool temperatures, ample sunlight, and sporadic showers, gradually turning into a comfortable climate. Slight temperature differences from December carry over to January, paving the way to a warmer February. Weather in January »Weather in February
In the subsequent month, the noticeble presence of sunshine, moderate precipitation, and a lifting of temperatures make February a transition towards spring. Despite the gradual rise in temperature, occasional snowfall persists, albeit minutely and less frequently than in January. Weather in February »Weather in March
As it dashes into March, Dallas moves into a mild spring phase marked by a rise in temperature, longer daylight hours, and an increased frequency of rainfall. The transition from February is notable, particularly a slight wind speed increment that ushers in the milder winds of April. Weather in March »Weather in April
April springs forward with warmer temperatures, extended daylight hours, and bountiful sunshine in Dallas. The minor increase in wind speed from March persists, setting up the toned-down breeze of May. As rainfall decreases to April's 2.64" (67mm), those wary of March's high precipitation can expect some relief. Weather in April »Weather in May
The May weather in Dallas welcomes summer's onset with warmer temperatures, the highest annual rainfall, and an increase in relative humidity. Transitioning from April's environment, the reduced wind speed in May brings a gentle breeze, heralding the relaxed winds of June. Weather in May »Weather in June
June's weather in Dallas marks the beginning of the hottest season, with warming temperatures, reduced rainfall, and clear skies. A noticeable shift from May's weather patterns noticeably lowers the rainfall frequency and enhances the prominence of sunshine. Weather in June »Weather in July
Dallas in July signals peak summer with its highest annual temperatures, diminished precipitation, and ample sunshine. It becomes a hotspot for making the most of the prolonged sunlight hours, especially with wind speed dropping to the lowest level for the year. Weather in July »Weather in August
As summer reaches its zenith, August in Dallas ushers in sweltering temperatures, sunny skies, and sporadic rainfall. The city's weather continues its July patterns, with a further decrease in rainfall and steady wind conditions. Weather in August »Weather in September
The shift into September replaces Dallas's hot summer with the early stages of autumn, characterized by cooler temperatures, increased rainfall, and shorter daylight hours. The transition from August manifests in a noticeable drop in temperature and a minimal decrease in wind speed. Weather in September »Weather in October
By October, Dallas has welcomed autumn fully with notably cooler temperatures, a considerable rise in rainfall, and shorter daylight hours. October's weather significantly differs from September, featuring the highest precipitation levels for autumn. Weather in October »Weather in November
In November, residents of Dallas experience the autumn pinnacle with dropping temperatures, reduced rainfall, and shorter daylight hours. This month marks a significant change from October, mainly in terms of lowering temperature and declining rainfall. Weather in November »Weather in December
December in Dallas hails the arrival of winter, with the coldest temperatures, diminished daylight hours, and minimal rainfall acting as harbingers. December's noticeable weather transition from November shows in decrementing temperatures and increased snowfall. Weather in December »Updated: Aug 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January tends to be the coldest month, with temperatures averaging a daily high of 54.3°F (12.4°C) and a low of 39.2°F (4°C).
Throughout the year, in Dallas, there are 141.2 rainfall days, and 30.12" (765mm) of precipitation is accumulated.
Months with snowfall are January, February, November and December.
In Dallas, during the entire year, snow falls for 2.2 days and aggregates up to 0.71" (18mm) of snow.
The months with the lowest UV index are January and December, with an average maximum UV index of 3.
The month with the least rainfall is February, when the rain falls for 9.3 days and typically collects 1.61" (41mm) of precipitation.
February is the month with the most snowfall. Snow falls for 1.2 days and accumulates 0.43" (11mm) of snow.
March through October are months without snowfall.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
The most humid month is May, with an average relative humidity of 72%.
May is the month with the most rainfall. Rain falls for 15.8 days and accumulates 4.13" (105mm) of precipitation.
May through August, with an average maximum UV index of 7, are months with the highest UV index.
With an average of 14h and 18min of daylight, June has the longest days of the year.
Dallas's August weather reaches an average high of 96.1°F (35.6°C) and an average low of 77.2°F (25.1°C), making it the warmest month.
With an average relative humidity of 55%, August is the least humid month.
August has the most sunshine of the year, with an average of 11.1h of sunshine.
With an average of 10h and 0min of daylight, December has the shortest days of the year.
The month with the least sunshine is December, with an average of 5.6h of sunshine.
Average temperature
Dallas, TX
The warmest month (with the highest average high temperature) is August (96.1°F).
The month with the lowest average high temperature is January (54.3°F).
The month with the highest average low temperature is August (77.2°F).
The coldest month (with the lowest average low temperature) is January (39.2°F).
Average pressure
Dallas, TX
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Dallas, TX
- Average wind speed in January:
9mph - Average wind speed in February:
9.6mph - Average wind speed in March:
9.8mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8.9mph - Average wind speed in June:
8mph
- Average wind speed in July:
7.3mph - Average wind speed in August:
6.9mph - Average wind speed in September:
6.6mph - Average wind speed in October:
8.1mph - Average wind speed in November:
8.6mph - Average wind speed in December:
8.5mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).
Average humidity
Dallas, TX
The month with the highest relative humidity is May (72%).
The month with the lowest relative humidity is August (55%).
Average rainfall
Dallas, TX
- Average rainfall in January:
1.69" - Average rainfall in February:
1.61" - Average rainfall in March:
2.87" - Average rainfall in April:
2.64" - Average rainfall in May:
4.13" - Average rainfall in June:
2.76"
- Average rainfall in July:
2.01" - Average rainfall in August:
2.6" - Average rainfall in September:
2.32" - Average rainfall in October:
3.66" - Average rainfall in November:
1.93" - Average rainfall in December:
1.89"
The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is February (1.61").
Average rainfall days
Dallas, TX
- Average rainfall days in January:
6.7 days - Average rainfall days in February:
9.3 days - Average rainfall days in March:
13.8 days - Average rainfall days in April:
13.2 days - Average rainfall days in May:
15.8 days - Average rainfall days in June:
13.1 days
- Average rainfall days in July:
13.1 days - Average rainfall days in August:
13.3 days - Average rainfall days in September:
14.1 days - Average rainfall days in October:
11.5 days - Average rainfall days in November:
8.5 days - Average rainfall days in December:
8.8 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (6.7 days).
Average snowfall
Dallas, TX
The month with the highest snowfall is February (0.43").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days
Dallas, TX
- Average snowfall days in January:
0.4 days - Average snowfall days in February:
1.2 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.2 days - Average snowfall days in December:
0.4 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Dallas, TX
- Average daylight in January:
10h and 18min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 54min - Average daylight in June:
14h and 18min
- Average daylight in July:
14h and 6min - Average daylight in August:
13h and 18min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 24min - Average daylight in November:
10h and 30min - Average daylight in December:
10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January:
5h and 54min - Average sunshine in February:
6h and 48min - Average sunshine in March:
6h and 54min - Average sunshine in April:
8h and 6min - Average sunshine in May:
8h and 54min - Average sunshine in June:
10h and 12min
- Average sunshine in July:
11h and 0min - Average sunshine in August:
11h and 6min - Average sunshine in September:
8h and 36min - Average sunshine in October:
6h and 36min - Average sunshine in November:
5h and 54min - Average sunshine in December:
5h and 36min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days
Dallas, TX
- Average sunshine days in January:
23.2 days - Average sunshine days in February:
15.8 days - Average sunshine days in March:
14.6 days - Average sunshine days in April:
14.3 days - Average sunshine days in May:
12.2 days - Average sunshine days in June:
14.3 days
- Average sunshine days in July:
15.1 days - Average sunshine days in August:
15 days - Average sunshine days in September:
14.5 days - Average sunshine days in October:
17.9 days - Average sunshine days in November:
19.7 days - Average sunshine days in December:
20.4 days
The month with the most sunshine days is January (23.2 days).
The month with the least sunshine days is May (12.2 days).
Average UV index
Dallas, TX
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover
Dallas, TX
The months with the most cloud cover are February and March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility
Dallas, TX
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
