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May Weather in Edwardsville, United States

Last updated: June 24, 2025

In May, the average temperature in Edwardsville, United States is a pleasant 20°C (68°F). Expect a range between a cool 4°C (39°F) and a warm 35°C (95°F). During this period, anticipate 154 mm (6.1 in) of precipitation spread across 14 days, contributing to an average humidity level of 82%. Make sure to pack accordingly!

May Temperature in Edwardsville

In May in Edwardsville, the average temperature is 20°C (68°F). Maximums can reach 35°C (95°F) and minimums can be as low as 4°C (39°F). This weather makes Edwardsville an ideal destination for travelers looking to enjoy mild days and cooler evenings.

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

The chart illustrates May temperature patterns in Edwardsville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Edwardsville, May typically has an average temperature of 20°C (68°F), with highs reaching up to 35°C (95°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec323547556877807672594439
Data source: Temperature data for Edwardsville 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 Edwardsville

In Edwardsville in May, the total precipitation amount is 154 mm (6.1 in) over a period of 14 days.

May Precipitation Trends in Edwardsville

The chart displays monthly precipitation patterns in Edwardsville, 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 Edwardsville, May typically receives around 154 mm (6.1 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec788013614415410996130591037562
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Edwardsville

In Edwardsville in May humidity is 82%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket that makes traveling a bit sluggish but surprisingly refreshing, as long as you take breaks in shaded areas to cool off.

May Average Humidity in Edwardsville

This chart illustrates the average monthly humidity levels in Edwardsville, 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 Edwardsville 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 Edwardsville

In Edwardsville 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 Edwardsville.

Maximum UV Index Levels in Edwardsville for May

The chart shows the monthly maximum UV Index (UVI) for Edwardsville 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 Edwardsville typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111099653
Data source: Edwardsville 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 Edwardsville Compares to Other Months

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

This table compares monthly weather conditions in Edwardsville, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)78 mm (3.1 inches)82%moderate
February Weather2°C (36°F)80 mm (3.2 inches)80%moderate
March Weather8°C (47°F)136 mm (5.4 inches)80%high
April Weather13°C (55°F)144 mm (5.7 inches)80%very high
May Weather20°C (68°F)154 mm (6.1 inches)82%very high
June Weather25°C (77°F)109 mm (4.3 inches)83%extreme
July Weather26°C (80°F)96 mm (3.8 inches)81%very high
August Weather25°C (76°F)130 mm (5.1 inches)80%very high
September Weather22°C (73°F)59 mm (2.3 inches)76%very high
October Weather15°C (59°F)103 mm (4.1 inches)76%high
November Weather7°C (44°F)75 mm (3.0 inches)85%moderate
December Weather4°C (39°F)62 mm (2.4 inches)86%moderate

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