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June Weather in Mattoon, United States

Last updated: June 24, 2025

In June, the average temperature in Mattoon, United States is a warm 24°C (76°F), with a comfortable range from a cool 10°C (50°F) to a sizzling 37°C (98°F). Expect to see about 110 mm (4.3 in) of precipitation spread over 11 days, contributing to an average humidity of 83%. Ideal for those who enjoy a blend of warmth and occasional refreshing showers!

June Temperature in Mattoon

In June in Mattoon, the average temperature is 24°C (76°F). Maximum temperatures can reach as high as 37°C (98°F), while minimums can drop to as low as 10°C (50°F). Be prepared for a range of weather conditions and pack accordingly for your travels!

June Weather in Mattoon: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in Mattoon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mattoon, June typically has an average temperature of 24°C (76°F), with highs reaching up to 37°C (98°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec303344536675787471584237
Data source: Temperature data for Mattoon 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.

June Precipitation in Mattoon

In Mattoon in June, the precipitation amount is 110 mm (4.3 in) spread over 11 days.

June Precipitation Trends in Mattoon

The chart displays monthly precipitation patterns in Mattoon, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Mattoon, June typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec7879125117135110116123671158965
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Mattoon

In Mattoon in June, humidity is 83%. With an average temperature of 24°C (76°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier and possibly causing travelers to sweat more quickly, prompting frequent breaks in shaded areas or the search for refreshing beverages.

June Average Humidity in Mattoon

This chart illustrates the average monthly humidity levels in Mattoon, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Mattoon is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%84%83%80%83%82%83%79%79%88%87%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Mattoon

In Mattoon in June, 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 Mattoon.

Maximum UV Index Levels in Mattoon for June

The chart shows the monthly maximum UV Index (UVI) for Mattoon in June, 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 June, the maximum UV index in Mattoon typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Mattoon June 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 June Weather in Mattoon Compares to Other Months

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

This table compares monthly weather conditions in Mattoon, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)78 mm (3.1 inches)84%moderate
February Weather1°C (33°F)79 mm (3.1 inches)82%moderate
March Weather7°C (44°F)125 mm (4.9 inches)84%high
April Weather12°C (53°F)117 mm (4.6 inches)83%very high
May Weather19°C (66°F)135 mm (5.3 inches)80%very high
June Weather24°C (76°F)110 mm (4.3 inches)83%extreme
July Weather25°C (78°F)116 mm (4.6 inches)82%very high
August Weather24°C (75°F)123 mm (4.8 inches)82%very high
September Weather21°C (71°F)67 mm (2.6 inches)79%very high
October Weather14°C (58°F)115 mm (4.5 inches)79%high
November Weather6°C (42°F)89 mm (3.5 inches)88%moderate
December Weather3°C (37°F)65 mm (2.6 inches)87%moderate

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