Dallas
Texas, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Dallas, TX

Dallas, Texas, modern city skyscrapers viewed from above, just before sunset
Dallas, Texas, modern city skyscrapers viewed from above, just before sunset
May introduces summer to Dallas and is characterized by an increase in the temperature to the range of 65.5°F (18.6°C) and 84.2°F (29°C).
May has more than eight daily hours of sunshine, and the daylight hours are extended to fourteen.
Being early in summer, the extreme temperature is absent, and the outdoor activities are tolerable. Touring Dallas goes on late into the evening as the temperature is bearable, though warm clothing is advised in case the temperature drops lower than registered.
During the day, it is essential to carry an umbrella as the afternoons receive showers of rainfall, falling for an average of ten days to collect 4.9" (124.5mm) in precipitation. May is the rainiest month of the year, and caution is advised as thunderstorms and light flooding accompany the rains.

What is the temperature in May in Dallas?

In Dallas, in May, the average high-temperature is 84.2°F (29°C), and the average low-temperature is 65.5°F (18.6°C).

What is the most humid month in Dallas?

May is the most humid month in Dallas, with an average relative humidity of 69.7%.

What is the average humidity in May in Dallas?

In May, the average relative humidity is 69.7%.

How much does it rain in Dallas in May?

In Dallas, Texas, in May, during 9.7 rainfall days, 4.9" (125mm) of precipitation is typically accumulated.

What is the wettest month in Dallas?

The month with the most rainfall in Dallas is May when the rain falls for 9.7 days and typically aggregates up to 4.9" (125mm) of precipitation.

How many hours of daylight does Dallas have in May?

In May, the average length of the day in Dallas, Texas, is 13.9h.

How many hours of sunshine does Dallas have in May?

In May, the average sunshine is 8.3h.

What are the months with the highest UV index in Dallas?

May through August, with an average maximum UV index of 10, are months with the highest UV index in Dallas, Texas.

What is the UV index intensity in May in Dallas?

The average daily maximum UV index in May in Dallas is 10. A UV Index estimate of 8 to 10 represents a very high hazard to health from unprotected exposure to the UV radiation.
Average temperature in May - Dallas, TX
  • Average high temperature in May: 84.2°F

The warmest month (with the highest average high temperature) is August (96.4°F).
The month with the lowest average high temperature is January (56.8°F).

  • Average low temperature in May: 65.4°F

The month with the highest average low temperature is August (76.8°F).
The coldest month (with the lowest average low temperature) is January (37.3°F).

Average humidity in May - Dallas, TX
  • Average humidity in May: 69.7%

The month with the highest relative humidity is May (69.7%).
The month with the lowest relative humidity is August (59.5%).

Average rainfall in May - Dallas, TX
  • Average rainfall in May: 4.9"

The wettest month (with the highest rainfall) is May (4.9").
The driest month (with the lowest rainfall) is August (1.9").

Average rainfall days in May - Dallas, TX
  • Average rainfall days in May: 9.7 days

The month with the highest number of rainy days is May (9.7 days).
The month with the lowest number of rainy days is August (4.6 days).

Average snowfall in May - Dallas, TX
  • Average snowfall in May: 0"

The month with the highest snowfall is February (0.6").
Months with the lowest snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in May - Dallas, TX
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (0.5 days).
Months with the lowest number of snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in May / Average sunshine in May - Dallas, TX
  • Average daylight in May: 13.9h

The month with the longest days is June (Average daylight: 14.3h).
The month with shortest days is December (Average daylight: 10h).

  • Average sunshine in May: 8.3h

The month with most sunshine is July (Average sunshine: 10.7h).
The month with least sunshine is December (Average sunshine: 5.6h).

Average UV index in May - Dallas, TX
  • Average UV index in May: 10

Months with the highest UV index are May, June, July and August (UV index 10).
Months with the lowest UV index are January and December (UV index 3).