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May Weather in Peoria, United States

Last updated: June 24, 2025

In May, the average temperature in Peoria, United States hovers around 18°C (64°F). Expect a wide range in temperatures, with minimums dipping to -1°C (31°F) and maximums soaring to 35°C (95°F). This month, you can also anticipate about 167 mm (6.6 in) of precipitation spread over 16 days, accompanied by an average humidity of 79%.

May Temperature in Peoria

In May in Peoria, the average temperature is 18°C (64°F). Maximums can reach up to 35°C (95°F), while minimums can drop as low as -1°C (31°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates May temperature patterns in Peoria, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Peoria, May typically has an average temperature of 18°C (64°F), with highs reaching up to 35°C (95°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec262941516474777470564034
Data source: Temperature data for Peoria 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 Peoria

In Peoria in May, the precipitation amount is 167 mm (6.6 in) occurring over a span of 16 days.

May Precipitation Trends in Peoria

The chart displays monthly precipitation patterns in Peoria, 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 Peoria, May typically receives around 167 mm (6.6 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec616710811616714810774711315755
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Peoria

In Peoria in May, humidity is 79%. With an average temperature of 18°C (64°F), this humidity feels like a warm, sticky embrace that can make outdoor activities more challenging but also creates a lush, vibrant atmosphere that's perfect for exploring local culture and scenery.

May Average Humidity in Peoria

This chart illustrates the average monthly humidity levels in Peoria, 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 Peoria is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%83%84%85%79%82%80%81%80%82%88%84%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Peoria

In Peoria 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 Peoria.

Maximum UV Index Levels in Peoria for May

The chart shows the monthly maximum UV Index (UVI) for Peoria 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 Peoria typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35789111098642
Data source: Peoria 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 Peoria Compares to Other Months

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

This table compares monthly weather conditions in Peoria, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)61 mm (2.4 inches)82%moderate
February Weather-2°C (29°F)67 mm (2.7 inches)83%moderate
March Weather5°C (42°F)108 mm (4.3 inches)84%high
April Weather10°C (51°F)116 mm (4.6 inches)85%very high
May Weather18°C (64°F)167 mm (6.6 inches)79%very high
June Weather23°C (74°F)148 mm (5.8 inches)82%extreme
July Weather25°C (77°F)107 mm (4.2 inches)80%very high
August Weather23°C (74°F)74 mm (2.9 inches)81%very high
September Weather21°C (70°F)71 mm (2.8 inches)80%very high
October Weather13°C (56°F)131 mm (5.2 inches)82%high
November Weather4°C (40°F)57 mm (2.3 inches)88%moderate
December Weather1°C (34°F)55 mm (2.2 inches)84%low

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