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May Weather in Williamson, United States

Last updated: June 24, 2025

The average temperature in Williamson, United States during May is 18°C (66°F). Temperatures can vary significantly, with a minimum of 3°C (37°F) and a maximum reaching 35°C (95°F). Expect some light rain, with an average precipitation amount of 14 mm (0.6 in) over approximately 3 days. The region enjoys a comfortable average humidity of 45%.

May Temperature in Williamson

In May in Williamson, the average temperature is 18°C (66°F). The maximum can reach 35°C (95°F), while the minimum can be as low as 3°C (37°F). This variety in temperature makes it an ideal destination for travelers looking for both warm and cool experiences.

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

The chart illustrates May temperature patterns in Williamson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Williamson, May typically has an average temperature of 18°C (66°F), with highs reaching up to 35°C (95°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec404248586577797873595041
Data source: Temperature data for Williamson 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 Williamson

In Williamson in May, the precipitation amount is 14 mm (0.6 in) accumulated over the course of 3 days.

May Precipitation Trends in Williamson

The chart displays monthly precipitation patterns in Williamson, 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 Williamson, May typically receives around 14 mm (0.6 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec3638469144683923252124
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Williamson

In Williamson in May humidity is 45%. With an average temperature of 18°C (66°F), this humidity feels like a mild and comfortable atmosphere for traveling, allowing for enjoyable strolls and outdoor activities without feeling overly sticky or oppressive.

May Average Humidity in Williamson

This chart illustrates the average monthly humidity levels in Williamson, 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 Williamson is approximately 45%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%80%68%58%45%31%27%30%48%60%70%77%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Williamson

In Williamson in May, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Williamson.

Maximum UV Index Levels in Williamson for May

The chart shows the monthly maximum UV Index (UVI) for Williamson 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 Williamson typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec479111212121110864
Data source: Williamson 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 Williamson Compares to Other Months

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

This table compares monthly weather conditions in Williamson, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)36 mm (1.4 inches)77%moderate
February Weather5°C (42°F)38 mm (1.5 inches)80%high
March Weather9°C (48°F)46 mm (1.8 inches)68%very high
April Weather14°C (58°F)9 mm (0.4 inches)58%extreme
May Weather18°C (66°F)14 mm (0.6 inches)45%extreme
June Weather25°C (77°F)4 mm (0.2 inches)31%extreme
July Weather26°C (80°F)68 mm (2.7 inches)27%extreme
August Weather26°C (78°F)39 mm (1.5 inches)30%extreme
September Weather23°C (73°F)23 mm (0.9 inches)48%very high
October Weather15°C (60°F)25 mm (1.0 inches)59%very high
November Weather10°C (50°F)21 mm (0.8 inches)70%high
December Weather5°C (41°F)24 mm (1.0 inches)77%moderate

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