Dallas
Texas, USA
Long-term weather forecast
Long-term weather forecast
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May weather forecast and Climate
Dallas, TX

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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 tolerable, 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 the rains are accompanied by thunderstorms and light flooding.
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  • The average high temperature in May: 29°C

The warmest month (with the highest average high temperature) is August (35.8°C).
The month with the lowest average high temperature is January (13.8°C).

  • The average low temperature in May: 18.6°C

The month with the highest average low temperature is August (24.9°C).
The coldest month (with the lowest average low temperature) is January (2.9°C).

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  • The 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%).

  • The average rainfall in May: 125mm

The wettest month (with the highest rainfall) is May (125mm).
The driest month (with the lowest rainfall) is August (47.5mm).

  • The 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).

  • The average snowfall in May: 0mm

The month with the highest snowfall is February (15.2mm).
Months with the lowest snowfall are April, May, June, July, August, September, October and November (0mm).

  • The 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).

  • The average daylight in May: 14h

Months with the longest days are May, June and July (Average daylight: 14h).
Months with shortest days are January, November and December (Average daylight: 10h).

  • The 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).

  • The 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).

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