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May Weather in South Pekin, United States

Last updated: June 24, 2025

In South Pekin, United States, the average temperature in May reaches a comfortable 18°C (65°F), though it can swing from a chilly 0°C (32°F) to a warm 35°C (95°F). Expect about 165 mm (6.5 in) of precipitation spread over 15 days, contributing to the region's average humidity of 79%. Stay prepared for a mix of weather during this vibrant month!

May Temperature in South Pekin

In May, in South Pekin, the average temperature is 18°C (65°F). The maximum can reach 35°C (95°F) and the minimum can be as low as 0°C (32°F). This wide temperature range makes South Pekin an ideal destination for travelers looking to experience a variety of weather conditions.

May Weather in South Pekin: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in South Pekin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In South Pekin, May typically has an average temperature of 18°C (65°F), with highs reaching up to 35°C (95°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec273042526474777470564135
Data source: Temperature data for South Pekin 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 South Pekin

In South Pekin in May, the total precipitation amount is 165 mm (6.5 in) over a span of 15 days.

May Precipitation Trends in South Pekin

The chart displays monthly precipitation patterns in South Pekin, 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 South Pekin, May typically receives around 165 mm (6.5 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec646911811716515011289681226054
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in South Pekin

In South Pekin in May, humidity is 79%. With an average temperature of 18°C (65°F), this humidity feels like walking through a warm mist, making traveling slightly uncomfortable and sticky, but offering a refreshing escape when you find moments of shade or a breeze.

May Average Humidity in South Pekin

This chart illustrates the average monthly humidity levels in South Pekin, 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 South Pekin 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 South Pekin

In South Pekin 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 South Pekin.

Maximum UV Index Levels in South Pekin for May

The chart shows the monthly maximum UV Index (UVI) for South Pekin 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 South Pekin typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357810111098642
Data source: South Pekin 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 South Pekin Compares to Other Months

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

This table compares monthly weather conditions in South Pekin, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (28°F)64 mm (2.5 inches)82%moderate
February Weather-1°C (30°F)69 mm (2.7 inches)83%moderate
March Weather6°C (43°F)118 mm (4.6 inches)84%high
April Weather11°C (52°F)117 mm (4.6 inches)85%very high
May Weather18°C (65°F)165 mm (6.5 inches)79%very high
June Weather23°C (75°F)150 mm (5.9 inches)82%extreme
July Weather25°C (77°F)112 mm (4.4 inches)80%very high
August Weather24°C (75°F)89 mm (3.5 inches)81%very high
September Weather21°C (70°F)68 mm (2.7 inches)80%very high
October Weather13°C (57°F)122 mm (4.8 inches)82%high
November Weather5°C (41°F)60 mm (2.4 inches)88%moderate
December Weather2°C (35°F)54 mm (2.1 inches)84%low

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