May weather forecast
Dallas, TX

Dallas, Texas, modern city skyscrapers, just before sunset
Dallas, Texas, modern city skyscrapers, just before sunset

Weather in May

May, the last month of the spring in Dallas, is another warm month, with an average temperature varying between 82°F (27.8°C) and 64.8°F (18.2°C).

Temperature

In May, the average high-temperature marginally rises from 75°F (23.9°C) in April to a still warm 82°F (27.8°C). The average low-temperature, in May, is 64.8°F (18.2°C).

Heat index

The average heat index in May is estimated at a tropical 86.9°F (30.5°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'real feel', or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like wind, pregnancy, metabolic differences, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

The most humid month is May, with an average relative humidity of 72%.

Rainfall

The month with the most rainfall in Dallas is May, when the rain falls for 15.8 days and typically aggregates up to 4.13" (105mm) of precipitation.

Snowfall

March through October are months without snowfall in Dallas.

Daylight

In May, the average length of the day in Dallas, Texas, is 13h and 52min.
On the first day of May in Dallas, Texas, sunrise is at 6:39 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 8:29 pm CDT.

Sunshine

The average sunshine in May in Dallas is 8.9h.

UV index

The months with the highest UV index in Dallas are May through August, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In May, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in May in Dallas?

The average high-temperature, in May, is 82°F (27.8°C), while the average low-temperature is 64.8°F (18.2°C). In May, the average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, is estimated at 86.9°F (30.5°C).

What is the most humid month in Dallas?

May is the most humid month in Dallas, Texas, with an average relative humidity of 72%.

What is the average humidity in May in Dallas?

The average relative humidity in May is 72%.

What is the wettest month in Dallas?

The month with the most rainfall in Dallas is May, when the rain falls for 15.8 days and typically aggregates up to 4.13" (105mm) of precipitation.

How much does it rain in Dallas in May?

In Dallas, Texas, in May, during 15.8 rainfall days, 4.13" (105mm) of precipitation is typically accumulated.

When it does not snow in Dallas?

In Dallas, Texas, snow does not fall in March through October.

What is the average length of the day in May in Dallas?

In Dallas, the average day length in May is 13h and 52min.

When are sunrise and sunset in May in Dallas?

In May, on the first day of the month, sunrise is at 6:39 am and sunset at 8:08 pm. On the last day of the month, in Dallas, sunrise is at 6:20 am and sunset at 8:29 pm CDT.

How many hours of sunshine does Dallas have in May?

In Dallas, Texas, the average sunshine duration in May is 8.9h.

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

May through August, with an average maximum UV index of 7, are months with the highest UV index.

What is the UV index reading in May in Dallas?

In May, the average daily maximum UV index in Dallas is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Dallas, TX

Average temperature in May - Dallas, TX
  • Average high temperature in May: 82°F

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).

  • Average low temperature in May: 64.8°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).

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Average pressure in May
Dallas, TX

Average pressure in May - Dallas, TX
  • Average pressure in May: 29.92"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).

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Average wind speed in May
Dallas, TX

Average wind speed in May - Dallas, TX
  • Average wind speed in May: 8.9mph

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).

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Average humidity in May
Dallas, TX

Average humidity in May - Dallas, TX
  • Average humidity in May: 72%

The month with the highest relative humidity is May (72%).
The month with the lowest relative humidity is August (55%).

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Average rainfall in May
Dallas, TX

Average rainfall in May - Dallas, TX
  • Average rainfall in May: 4.13"

The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is February (1.61").

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Average rainfall days in May
Dallas, TX

Average rainfall days in May - Dallas, TX
  • Average rainfall days in May: 15.8 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).

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Average snowfall in May
Dallas, TX

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

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").

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Average snowfall days in May
Dallas, TX

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

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Average daylight in May /
Average sunshine in May
Dallas, TX

Average daylight in May / Average sunshine in May - Dallas, TX
  • Average daylight in May: 13h and 52min

The month with the longest days is June (Average daylight: 14h and 17min).
The month with the shortest days is December (Average daylight: 10h and 2min).

  • Average sunshine in May: 8h and 54min

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).

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Average sunshine days in May
Dallas, TX

Average sunshine days in May - Dallas, TX
  • Average sunshine days in May: 12.2 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).

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Average UV index in May
Dallas, TX

Average UV index in May - Dallas, TX
  • Average UV index in May: 7

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).

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Average cloud cover in May
Dallas, TX

Average cloud cover in May - Dallas, TX
  • Average cloud cover in May: 35

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).

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Average visibility in May
Dallas, TX

Average visibility in May - Dallas, TX
  • Average visibility in May: 6mi

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).

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