February Weather in Janesville, United States

Last updated: June 24, 2025

In February, the average temperature in Janesville, United States hovers around -9°C (17°F), making it a brisk time of year. Temperature fluctuations are notable, with minimums plunging to -37°C (-33°F) and maximums reaching a warm 18°C (65°F). Expect a bit of wet weather, as 41 mm (1.6 in) of precipitation is likely over 7 days, accompanied by high humidity at 84%. Enjoy the chilly charm of this winter month!

February Temperature in Janesville

In February in Janesville, the average temperature is -9°C (17°F). Maximum temperatures can reach 18°C (65°F), while minimums can drop as low as -37°C (-33°F). Be sure to pack layers to comfortably navigate the wide temperature range during your travels.

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

The chart illustrates February 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, February typically has an average temperature of -9°C (17°F), with highs reaching up to 18°C (65°F) and lows dropping to around -37°C (-33°F).

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

February Precipitation in Janesville

In Janesville in February, the precipitation amount is 41 mm (1.6 in) spread over a duration of 7 days.

February Precipitation Trends in Janesville

The chart displays monthly precipitation patterns in Janesville, with values for each month alongside February’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how February’s conditions compare to those of other months. In Janesville, February typically receives around 41 mm (1.6 inches) of precipitation spread over approximately 7 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

February Humidity in Janesville

In Janesville in February, humidity is 84%. With an average temperature of -9°C (17°F), this humidity feels like a chilling embrace that clings to your skin, making the cold air penetrate even deeper and creating an oddly damp feeling that can be uncomfortable for traveling.

February Average Humidity in Janesville

This chart illustrates the average monthly humidity levels in Janesville, with February’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In February, average humidity in Janesville is approximately 84%, offering insight into how humid the weather typically is during this month.

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

February UV Index in Janesville

In Janesville in February, 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 February

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

Data source: Janesville February 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 February 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 February’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 February’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (17°F)	34 mm (1.3 inches)	82%	moderate
February Weather	-9°C (17°F)	41 mm (1.6 inches)	84%	moderate
March Weather	1°C (34°F)	68 mm (2.7 inches)	80%	moderate
April Weather	7°C (45°F)	91 mm (3.6 inches)	81%	very high
May Weather	15°C (60°F)	140 mm (5.5 inches)	74%	very high
June Weather	22°C (72°F)	118 mm (4.7 inches)	80%	very high
July Weather	23°C (74°F)	103 mm (4.1 inches)	80%	very high
August Weather	21°C (71°F)	119 mm (4.7 inches)	77%	very high
September Weather	18°C (65°F)	137 mm (5.4 inches)	75%	very high
October Weather	9°C (49°F)	93 mm (3.7 inches)	80%	moderate
November Weather	1°C (35°F)	36 mm (1.4 inches)	87%	moderate
December Weather	-4°C (25°F)	44 mm (1.7 inches)	83%	moderate