July Weather in Janesville, United States

Last updated: June 24, 2025

In Janesville, United States, the average temperature in July is a pleasant 23°C (74°F). However, you might experience temperature fluctuations, with lows dipping to 9°C (49°F) and highs soaring to 38°C (100°F). During this time, expect a modest precipitation amount of 7 mm (0.3 in) spread over 2 days, while the average humidity sits comfortably at 56%.

July Temperature in Janesville

In July, in Janesville, the average temperature is 23°C (74°F). Maximum temperatures can reach 38°C (100°F), while minimums can drop to as low as 9°C (49°F). This climate makes Janesville an ideal destination for travelers seeking warm weather during the day and cooler evenings.

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

The chart illustrates July 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, July typically has an average temperature of 23°C (74°F), with highs reaching up to 38°C (100°F) and lows dropping to around 9°C (49°F).

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

July Precipitation in Janesville

In Janesville in July, the precipitation amount is 7 mm (0.3 in) over a period of 2 days.

July Precipitation Trends in Janesville

The chart displays monthly precipitation patterns in Janesville, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Janesville, July typically receives around 7 mm (0.3 inches) of precipitation spread over approximately 2 days.

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

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Millimeters (mm) Inches (in)

July Humidity in Janesville

In Janesville in July, humidity is 56%. With an average temperature of 23°C (74°F), this humidity feels like a pleasant embrace, making it comfortable for traveling as long as you stay hydrated and take breaks in the shade.

July Average Humidity in Janesville

This chart illustrates the average monthly humidity levels in Janesville, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Janesville is approximately 56%, offering insight into how humid the weather typically is during this month.

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

July UV Index in Janesville

In Janesville in July, 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 July

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

Data source: Janesville July 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 July 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 July’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 July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	102 mm (4.0 inches)	86%	moderate
February Weather	0°C (32°F)	110 mm (4.3 inches)	87%	moderate
March Weather	2°C (37°F)	85 mm (3.4 inches)	86%	very high
April Weather	8°C (46°F)	43 mm (1.7 inches)	83%	very high
May Weather	12°C (55°F)	44 mm (1.7 inches)	72%	extreme
June Weather	19°C (66°F)	10 mm (0.4 inches)	67%	extreme
July Weather	23°C (74°F)	7 mm (0.3 inches)	56%	extreme
August Weather	22°C (72°F)	8 mm (0.3 inches)	42%	extreme
September Weather	17°C (63°F)	19 mm (0.7 inches)	46%	very high
October Weather	10°C (50°F)	34 mm (1.3 inches)	67%	high
November Weather	4°C (40°F)	47 mm (1.8 inches)	86%	moderate
December Weather	-1°C (31°F)	75 mm (3.0 inches)	86%	moderate