March Weather in Janesville, United States

Last updated: June 24, 2025

In Janesville, United States, the average temperature in March hovers around 1°C (34°F). Be prepared for a wide range of temperatures, as minimums can plunge to -27°C (-16°F) while maximums can reach a comfortable 24°C (75°F). Expect about 68 mm (2.7 in) of precipitation spread over 7 days, and with an average humidity of 80%, it's a month where layering and umbrellas might be your best friends!

March Temperature in Janesville

In March in Janesville, the average temperature is 1°C (34°F). The maximum can reach 24°C (75°F) while the minimum can drop as low as -27°C (-16°F). Be prepared for a wide range of temperatures during your travels, so pack accordingly!

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

The chart illustrates March 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, March typically has an average temperature of 1°C (34°F), with highs reaching up to 24°C (75°F) and lows dropping to around -27°C (-16°F).

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

March Precipitation in Janesville

In Janesville in March, the precipitation amount is 68 mm (2.7 in) over the course of 7 days.

March Precipitation Trends in Janesville

The chart displays monthly precipitation patterns in Janesville, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Janesville, March typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 7 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

March Humidity in Janesville

In Janesville in March, humidity is 80%. With an average temperature of 1°C (34°F), this humidity feels like a damp chill that seeps through your layers, making outdoor activities uncomfortable and potentially discouraging for travelers.

March Average Humidity in Janesville

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

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

March UV Index in Janesville

In Janesville in March, 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 March

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

Data source: Janesville March 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 March 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 March’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 March’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