June Weather in Janesville, United States

Last updated: June 24, 2025

In Janesville, United States, the average temperature in June is a pleasant 22°C (72°F). However, temperatures can dip as low as 8°C (47°F) or soar to a sizzling 35°C (95°F). Expect a decent amount of rainfall as well, with an average precipitation of 126 mm (5.0 in) spread over 12 days. Humidity remains high, hovering around 80%, adding to the region's tropical feel.

June Temperature in Janesville

In June in Janesville, the average temperature is 22°C (72°F). Maximum can reach 35°C (95°F), and minimum can be as low as 8°C (47°F). This range makes it an ideal time for travelers seeking mild weather and the chance to enjoy both warm and cooler moments.

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

The chart illustrates June temperature patterns in Janesville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Janesville, June typically has an average temperature of 22°C (72°F), with highs reaching up to 35°C (95°F) and lows dropping to around 8°C (47°F).

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

June Precipitation in Janesville

In Janesville in June, the precipitation amount is 126 mm (5.0 in) over the course of 12 days.

June Precipitation Trends in Janesville

The chart displays monthly precipitation patterns in Janesville, 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 Janesville, June typically receives around 126 mm (5.0 inches) of precipitation spread over approximately 12 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 Janesville

In Janesville in June humidity is 80%. With an average temperature of 22°C (72°F), this humidity feels like a warm, enveloping blanket that can quickly sap your energy while traveling, making you feel sticky and uncomfortable if you're not prepared.

June Average Humidity in Janesville

This chart illustrates the average monthly humidity levels in Janesville, 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 Janesville is approximately 80%, 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 Janesville

In Janesville 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 Janesville.

Maximum UV Index Levels in Janesville for June

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

Data source: Janesville 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 Janesville Compares to Other Months

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

This table compares monthly weather conditions in Janesville, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	40 mm (1.6 inches)	82%	moderate
February Weather	-7°C (20°F)	50 mm (2.0 inches)	84%	moderate
March Weather	2°C (36°F)	72 mm (2.8 inches)	80%	moderate
April Weather	8°C (47°F)	75 mm (2.9 inches)	81%	very high
May Weather	16°C (61°F)	161 mm (6.3 inches)	74%	very high
June Weather	22°C (72°F)	126 mm (5.0 inches)	80%	extreme
July Weather	24°C (75°F)	97 mm (3.8 inches)	80%	very high
August Weather	22°C (71°F)	113 mm (4.5 inches)	77%	very high
September Weather	19°C (66°F)	116 mm (4.6 inches)	75%	very high
October Weather	10°C (51°F)	132 mm (5.2 inches)	80%	moderate
November Weather	2°C (36°F)	48 mm (1.9 inches)	87%	moderate
December Weather	-2°C (29°F)	35 mm (1.4 inches)	83%	moderate