June Weather in Joliet, United States

Last updated: June 24, 2025

In June, the average temperature in Joliet, United States is a comfortable 18°C (64°F). However, be prepared for a range of temperatures; it can dip as low as 2°C (37°F) or soar to a sizzling 39°C (102°F). During this month, expect approximately 76 mm (3.0 in) of precipitation spread over 11 days, with an average humidity level of 79%. Plan your activities accordingly!

June Temperature in Joliet

In June in Joliet, the average temperature is 18°C (64°F). Maximum temperatures can reach 39°C (102°F), while minimums can drop as low as 2°C (37°F). This wide range means travelers should be prepared for both warm days and cooler evenings.

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

The chart illustrates June temperature patterns in Joliet, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Joliet, June typically has an average temperature of 18°C (64°F), with highs reaching up to 39°C (102°F) and lows dropping to around 2°C (37°F).

Data source: Temperature data for Joliet generated using information from the Copernicus Climate Change Service.

June Precipitation in Joliet

In Joliet in June, the total precipitation amount is 76 mm (3.0 in), recorded over a period of 11 days.

June Precipitation Trends in Joliet

The chart displays monthly precipitation patterns in Joliet, 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 Joliet, June typically receives around 76 mm (3.0 inches) of precipitation spread over approximately 11 days.

Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

June Humidity in Joliet

In Joliet in June, 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.

June Average Humidity in Joliet

This chart illustrates the average monthly humidity levels in Joliet, 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 Joliet is approximately 79%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Joliet

In Joliet 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 Joliet.

Maximum UV Index Levels in Joliet for June

The chart shows the monthly maximum UV Index (UVI) for Joliet 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 Joliet typically reaches 11, which falls under the extreme exposure category.

Data source: Joliet 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 Joliet Compares to Other Months

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

This table compares monthly weather conditions in Joliet, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	21 mm (0.8 inches)	85%	moderate
February Weather	-7°C (20°F)	46 mm (1.8 inches)	85%	moderate
March Weather	2°C (35°F)	44 mm (1.7 inches)	79%	high
April Weather	5°C (42°F)	76 mm (3.0 inches)	74%	very high
May Weather	12°C (53°F)	82 mm (3.2 inches)	76%	very high
June Weather	18°C (64°F)	76 mm (3.0 inches)	79%	extreme
July Weather	22°C (72°F)	32 mm (1.3 inches)	81%	very high
August Weather	21°C (69°F)	25 mm (1.0 inches)	80%	very high
September Weather	15°C (60°F)	57 mm (2.2 inches)	76%	very high
October Weather	6°C (43°F)	57 mm (2.2 inches)	74%	moderate
November Weather	1°C (35°F)	34 mm (1.3 inches)	81%	moderate
December Weather	-3°C (28°F)	30 mm (1.2 inches)	87%	low