March Weather in Riverside, United States

Last updated: June 24, 2025

In March, the average temperature in Riverside, United States hovers around 4°C (40°F). Expect a chilly minimum of -21°C (-5°F), while the mercury can rise to a pleasant 23°C (74°F) on warmer days. During this month, the region experiences approximately 84 mm (3.3 in) of precipitation spread over 9 days, accompanied by an average humidity of 81%.

March Temperature in Riverside

In March in Riverside, the average temperature is 4°C (40°F). Maximums can reach 23°C (74°F), and minimums can be as low as -21°C (-5°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates March temperature patterns in Riverside, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Riverside, March typically has an average temperature of 4°C (40°F), with highs reaching up to 23°C (74°F) and lows dropping to around -21°C (-5°F).

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

March Precipitation in Riverside

In Riverside in March, the precipitation amount is 84 mm (3.3 in) spread over 9 days.

March Precipitation Trends in Riverside

The chart displays monthly precipitation patterns in Riverside, 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 Riverside, March typically receives around 84 mm (3.3 inches) of precipitation spread over approximately 9 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 Riverside

In Riverside in March humidity is 81%. With an average temperature of 4°C (40°F), this humidity feels like a damp chill that can make traveling quite uncomfortable, as the cold air clings uncomfortably to your skin and the moisture can quickly sap your body heat.

March Average Humidity in Riverside

This chart illustrates the average monthly humidity levels in Riverside, 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 Riverside is approximately 81%, 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 Riverside

In Riverside in March, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Riverside, you can refer to this Hourly UV Index in Riverside.

Maximum UV Index Levels in Riverside for March

The chart shows the monthly maximum UV Index (UVI) for Riverside 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 Riverside typically reaches 6, which falls under the high exposure category.

Data source: Riverside 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 Riverside Compares to Other Months

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

This table compares monthly weather conditions in Riverside, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (23°F)	49 mm (1.9 inches)	81%	moderate
February Weather	-4°C (25°F)	59 mm (2.3 inches)	81%	moderate
March Weather	4°C (40°F)	84 mm (3.3 inches)	81%	high
April Weather	10°C (50°F)	85 mm (3.4 inches)	82%	very high
May Weather	17°C (63°F)	139 mm (5.5 inches)	78%	very high
June Weather	23°C (74°F)	133 mm (5.2 inches)	81%	extreme
July Weather	25°C (77°F)	70 mm (2.8 inches)	79%	very high
August Weather	23°C (74°F)	72 mm (2.8 inches)	77%	very high
September Weather	20°C (69°F)	123 mm (4.8 inches)	78%	very high
October Weather	12°C (54°F)	129 mm (5.1 inches)	78%	high
November Weather	4°C (39°F)	51 mm (2.0 inches)	87%	moderate
December Weather	0°C (32°F)	48 mm (1.9 inches)	84%	moderate