October Weather in Janesville, United States

Last updated: June 24, 2025

In October, the average temperature in Janesville, United States hovers around 10°C (51°F). However, be prepared for a range that can dip to a chilly -7°C (20°F) or soar up to a warm 31°C (88°F). Expect about 132 mm (5.2 in) of precipitation spread over 11 days, contributing to a relatively high average humidity of 80%. Stay equipped for a month full of varied weather!

October Temperature in Janesville

In October in Janesville, the average temperature is 10°C (51°F). Maximums can reach 31°C (88°F) while minimums can drop as low as -7°C (20°F). This wide range of temperatures makes it essential for travelers to pack accordingly for both warm and cold conditions.

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

The chart illustrates October 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, October typically has an average temperature of 10°C (51°F), with highs reaching up to 31°C (88°F) and lows dropping to around -7°C (20°F).

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

October Precipitation in Janesville

In Janesville in October, the precipitation amount is 132 mm (5.2 in), which occurs over a span of 11 days.

October Precipitation Trends in Janesville

The chart displays monthly precipitation patterns in Janesville, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Janesville, October typically receives around 132 mm (5.2 inches) of precipitation spread over approximately 11 days.

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

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Millimeters (mm) Inches (in)

October Humidity in Janesville

In Janesville in October, humidity is 80%. With an average temperature of 10°C (51°F), this humidity feels like a damp layer clinging to the skin, making outdoor activities uncomfortable and requiring travelers to dress in layers to cope with the chill and moisture in the air.

October Average Humidity in Janesville

This chart illustrates the average monthly humidity levels in Janesville, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Janesville is approximately 80%, offering insight into how humid the weather typically is during this month.

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

October UV Index in Janesville

In Janesville in October, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Janesville.

Maximum UV Index Levels in Janesville for October

The chart shows the monthly maximum UV Index (UVI) for Janesville in October, 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 October, the maximum UV index in Janesville typically reaches 5, which falls under the moderate exposure category.

Data source: Janesville October 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 October 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 October’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 October’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