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May Weather in Fairbury, United States

Last updated: June 24, 2025

In May, the average temperature in Fairbury, United States hovers around 18°C (64°F). However, temperatures can vary significantly, with lows dropping to 0°C (32°F) and peaks reaching up to 35°C (95°F). Over the month, expect precipitation to total 158 mm (6.2 in), typically spread across 16 days, contributing to an average humidity of 79%.

May Temperature in Fairbury

In May in Fairbury, the average temperature is 18°C (64°F), with maximums reaching 35°C (95°F) and minimums dropping as low as 0°C (32°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates May temperature patterns in Fairbury, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fairbury, 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 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec272941516474777469564034
Data source: Temperature data for Fairbury 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 Fairbury

In Fairbury in May, the total precipitation amount is 158 mm (6.2 in) that occurs over a span of 16 days.

May Precipitation Trends in Fairbury

The chart displays monthly precipitation patterns in Fairbury, 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 Fairbury, May typically receives around 158 mm (6.2 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec64701051161581169397701276155
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Fairbury

In Fairbury 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 Fairbury

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

In Fairbury 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 Fairbury.

Maximum UV Index Levels in Fairbury for May

The chart shows the monthly maximum UV Index (UVI) for Fairbury 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 Fairbury typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098642
Data source: Fairbury 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 Fairbury Compares to Other Months

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

This table compares monthly weather conditions in Fairbury, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)64 mm (2.5 inches)82%moderate
February Weather-2°C (29°F)70 mm (2.8 inches)83%moderate
March Weather5°C (42°F)105 mm (4.1 inches)84%high
April Weather10°C (51°F)116 mm (4.5 inches)85%very high
May Weather18°C (64°F)158 mm (6.2 inches)79%very high
June Weather23°C (74°F)116 mm (4.5 inches)82%extreme
July Weather25°C (77°F)93 mm (3.7 inches)80%very high
August Weather23°C (74°F)97 mm (3.8 inches)81%very high
September Weather21°C (70°F)70 mm (2.8 inches)80%very high
October Weather13°C (56°F)127 mm (5.0 inches)82%high
November Weather5°C (41°F)60 mm (2.4 inches)88%moderate
December Weather1°C (35°F)55 mm (2.2 inches)84%low

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