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May Weather in Dallas, United States

Last updated: June 24, 2025

In Dallas, United States, the average temperature in May is a mild 14°C (57°F), with minimums dipping to 2°C (36°F) and maximums soaring up to 31°C (88°F). Expect a bit of rain, as the area sees an average precipitation of 54 mm (2.1 in) over about 8 days, accompanied by high humidity levels averaging 83%. Perfect for those who enjoy a balanced climate!

May Temperature in Dallas

In May in Dallas, the average temperature is 14°C (57°F). Maximum temperatures can reach 31°C (88°F), while minimums can drop to as low as 2°C (36°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

May Weather in Dallas: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Dallas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dallas, May typically has an average temperature of 14°C (57°F), with highs reaching up to 31°C (88°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec414145505763686963534641
Data source: Temperature data for Dallas generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Dallas

In Dallas in May, the total precipitation amount reaches 54 mm (2.1 in) over a span of 8 days.

May Precipitation Trends in Dallas

The chart displays monthly precipitation patterns in Dallas, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Dallas, May typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec1651661331135444466089147186
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Dallas

In Dallas in May, humidity is 83%. With an average temperature of 14°C (57°F), this humidity feels like you're stepping into a warm, damp embrace that can make outdoor activities quite uncomfortable, often leaving you sweaty and exhausted if you're not prepared with plenty of water and breathable clothing.

May Average Humidity in Dallas

This chart illustrates the average monthly humidity levels in Dallas, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Dallas is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%85%83%83%84%82%74%71%81%87%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Dallas

In Dallas in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Dallas.

Maximum UV Index Levels in Dallas for May

The chart shows the monthly maximum UV Index (UVI) for Dallas in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Dallas typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec23579101097532
Data source: Dallas May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How May Weather in Dallas Compares to Other Months

Weather in Dallas varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Dallas, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Dallas, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)165 mm (6.5 inches)85%low
February Weather5°C (41°F)166 mm (6.5 inches)84%moderate
March Weather7°C (45°F)133 mm (5.2 inches)85%moderate
April Weather10°C (51°F)112 mm (4.4 inches)83%high
May Weather14°C (57°F)54 mm (2.1 inches)83%very high
June Weather17°C (63°F)44 mm (1.7 inches)83%very high
July Weather20°C (68°F)4 mm (0.2 inches)82%very high
August Weather21°C (69°F)5 mm (0.2 inches)74%very high
September Weather17°C (63°F)60 mm (2.3 inches)71%high
October Weather11°C (53°F)89 mm (3.5 inches)81%moderate
November Weather8°C (46°F)147 mm (5.8 inches)87%moderate
December Weather5°C (41°F)186 mm (7.3 inches)87%low

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