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May Weather in Elgin, United States

Last updated: June 24, 2025

In Elgin, United States during May, the average temperature hovers around 25°C (77°F), offering a pleasant climate. However, be prepared for temperature fluctuations, with minimums dipping to 10°C (50°F) and maximums soaring up to 38°C (100°F). Expect precipitation of approximately 147 mm (5.8 in) spread across 14 days, resulting in a humidity level of around 81%, making the air feel quite moist.

May Temperature in Elgin

In May in Elgin, the average temperature is 25°C (77°F), with maximums reaching up to 38°C (100°F) and minimums dropping as low as 10°C (50°F). It’s an ideal time to travel to Elgin if you enjoy warm weather and are prepared for some temperature variations.

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

The chart illustrates May temperature patterns in Elgin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Elgin, May typically has an average temperature of 25°C (77°F), with highs reaching up to 38°C (100°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec525464697782858681716055
Data source: Temperature data for Elgin 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 Elgin

In Elgin in May, the total precipitation amount is 147 mm (5.8 in) over the course of 14 days.

May Precipitation Trends in Elgin

The chart displays monthly precipitation patterns in Elgin, 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 Elgin, May typically receives around 147 mm (5.8 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec55646910514811085131117876485
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Elgin

In Elgin in May, humidity is 81%. With an average temperature of 25°C (77°F), this humidity feels like walking through a warm, thick blanket, making traveling quite challenging as you may feel sticky and sluggish, requiring frequent breaks to stay refreshed and hydrated.

May Average Humidity in Elgin

This chart illustrates the average monthly humidity levels in Elgin, 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 Elgin is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%80%78%79%81%77%71%67%69%73%82%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Elgin

In Elgin in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Elgin.

Maximum UV Index Levels in Elgin for May

The chart shows the monthly maximum UV Index (UVI) for Elgin 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 Elgin typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111112121110865
Data source: Elgin 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 Elgin Compares to Other Months

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

This table compares monthly weather conditions in Elgin, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (52°F)55 mm (2.2 inches)79%moderate
February Weather12°C (54°F)64 mm (2.5 inches)80%very high
March Weather18°C (64°F)69 mm (2.7 inches)78%very high
April Weather20°C (69°F)105 mm (4.1 inches)79%extreme
May Weather25°C (77°F)147 mm (5.8 inches)81%extreme
June Weather28°C (83°F)110 mm (4.3 inches)77%extreme
July Weather29°C (85°F)85 mm (3.4 inches)71%extreme
August Weather30°C (86°F)131 mm (5.1 inches)67%extreme
September Weather27°C (81°F)117 mm (4.6 inches)69%very high
October Weather22°C (71°F)87 mm (3.4 inches)73%very high
November Weather16°C (61°F)64 mm (2.5 inches)82%high
December Weather13°C (56°F)85 mm (3.4 inches)87%moderate

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