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May Weather in Wentzville, United States

Last updated: June 24, 2025

In May, the average temperature in Wentzville, United States hovers around 19°C (67°F). Visitors can expect a minimum temperature of 5°C (41°F) and a maximum of 34°C (93°F). Prepare for 145 mm (5.7 in) of precipitation over approximately 14 days, with an average humidity of 82%.

May Temperature in Wentzville

In May in Wentzville, the average temperature is 19°C (67°F), with maximums reaching 34°C (93°F) and minimums dropping as low as 5°C (41°F). This varied climate makes Wentzville an ideal destination for travelers looking to experience both warm and cooler weather.

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

The chart illustrates May temperature patterns in Wentzville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wentzville, May typically has an average temperature of 19°C (67°F), with highs reaching up to 34°C (93°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec323546556776797672594439
Data source: Temperature data for Wentzville 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 Wentzville

In Wentzville in May, the total precipitation amount is 145 mm (5.7 in) over a span of 14 days.

May Precipitation Trends in Wentzville

The chart displays monthly precipitation patterns in Wentzville, 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 Wentzville, May typically receives around 145 mm (5.7 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec72781281211458497139561106852
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Wentzville

In Wentzville in May humidity is 82%. With an average temperature of 19°C (67°F), this humidity feels like a heavy blanket wrapping around you, making each step feel sluggish and the air thick as you explore the sights.

May Average Humidity in Wentzville

This chart illustrates the average monthly humidity levels in Wentzville, 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 Wentzville is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%80%82%83%81%80%76%76%85%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Wentzville

In Wentzville in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Wentzville.

Maximum UV Index Levels in Wentzville for May

The chart shows the monthly maximum UV Index (UVI) for Wentzville 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 Wentzville typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109653
Data source: Wentzville 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 Wentzville Compares to Other Months

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

This table compares monthly weather conditions in Wentzville, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)72 mm (2.9 inches)82%moderate
February Weather2°C (35°F)78 mm (3.1 inches)80%moderate
March Weather8°C (47°F)128 mm (5.0 inches)80%high
April Weather13°C (55°F)121 mm (4.8 inches)80%very high
May Weather19°C (67°F)145 mm (5.7 inches)82%very high
June Weather25°C (76°F)84 mm (3.3 inches)83%extreme
July Weather26°C (80°F)97 mm (3.8 inches)81%extreme
August Weather24°C (76°F)139 mm (5.5 inches)80%very high
September Weather22°C (72°F)56 mm (2.2 inches)76%very high
October Weather15°C (59°F)110 mm (4.3 inches)76%high
November Weather7°C (44°F)68 mm (2.7 inches)85%moderate
December Weather4°C (39°F)52 mm (2.1 inches)86%moderate

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