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May Weather in Lewisville, United States

Last updated: June 24, 2025

In May, the average temperature in Lewisville, United States is a pleasant 24°C (75°F). While temperatures can dip to a minimum of 7°C (45°F), they can also soar to a maximum of 35°C (96°F). This month typically sees 160 mm (6.3 in) of precipitation spread over about 12 days, contributing to an average humidity level of 81%, making for a balmy and humid atmosphere.

May Temperature in Lewisville

In May in Lewisville, the average temperature is 24°C (75°F), with maximums reaching 35°C (96°F) and minimums dipping as low as 7°C (45°F). This variation in temperature makes Lewisville an ideal destination for travelers seeking both warmth and cooler evenings.

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

The chart illustrates May temperature patterns in Lewisville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lewisville, May typically has an average temperature of 24°C (75°F), with highs reaching up to 35°C (96°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec464960657481858479685651
Data source: Temperature data for Lewisville 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 Lewisville

In Lewisville in May, the precipitation amount is 160 mm (6.3 in) over a span of 12 days.

May Precipitation Trends in Lewisville

The chart displays monthly precipitation patterns in Lewisville, 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 Lewisville, May typically receives around 160 mm (6.3 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec5695112107160834396891415659
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Lewisville

In Lewisville in May humidity is 81%. With an average temperature of 24°C (75°F), this humidity feels like a warm, thick blanket enveloping you, making traveling a bit sticky and sweaty, yet still inviting for those who enjoy the rich, tropical atmosphere.

May Average Humidity in Lewisville

This chart illustrates the average monthly humidity levels in Lewisville, 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 Lewisville is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%78%78%81%78%73%66%65%72%82%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Lewisville

In Lewisville in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Lewisville.

Maximum UV Index Levels in Lewisville for May

The chart shows the monthly maximum UV Index (UVI) for Lewisville 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 Lewisville typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110864
Data source: Lewisville 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 Lewisville Compares to Other Months

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

This table compares monthly weather conditions in Lewisville, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)56 mm (2.2 inches)80%moderate
February Weather9°C (49°F)95 mm (3.7 inches)79%high
March Weather16°C (60°F)112 mm (4.4 inches)78%very high
April Weather18°C (65°F)107 mm (4.2 inches)78%very high
May Weather24°C (75°F)160 mm (6.3 inches)81%extreme
June Weather27°C (82°F)83 mm (3.3 inches)78%extreme
July Weather30°C (85°F)43 mm (1.7 inches)73%extreme
August Weather29°C (85°F)96 mm (3.8 inches)66%extreme
September Weather26°C (79°F)89 mm (3.5 inches)65%very high
October Weather20°C (68°F)141 mm (5.5 inches)72%very high
November Weather13°C (56°F)56 mm (2.2 inches)82%high
December Weather11°C (51°F)59 mm (2.3 inches)87%moderate

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