May Weather in Roseville, United States

Last updated: June 24, 2025

In Roseville, United States, the average temperature in May is a comfortable 20°C (68°F). However, temperatures can vary significantly, ranging from a chilly 6°C (43°F) to a sweltering 39°C (102°F). During this month, expect an average precipitation of 31 mm (1.2 in) over 3 days, contributing to an average humidity level of 74%.

May Temperature in Roseville

In May in Roseville, the average temperature is 20°C (68°F). The maximum can reach 39°C (102°F), and the minimum can be as low as 6°C (43°F). Overall, travelers should be prepared for a wide range of temperatures and plan their activities accordingly.

May Weather in Roseville: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Roseville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Roseville, May typically has an average temperature of 20°C (68°F), with highs reaching up to 39°C (102°F) and lows dropping to around 6°C (43°F).

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

May Precipitation in Roseville

In Roseville in May, the precipitation amount is 31 mm (1.2 in) over the course of 3 days.

May Precipitation Trends in Roseville

The chart displays monthly precipitation patterns in Roseville, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Roseville, May typically receives around 31 mm (1.2 inches) of precipitation spread over approximately 3 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Roseville

In Roseville in May humidity is 74%. With an average temperature of 20°C (68°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel exhausting, prompting travelers to seek shade and hydration more often.

May Average Humidity in Roseville

This chart illustrates the average monthly humidity levels in Roseville, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Roseville is approximately 74%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Roseville

In Roseville in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Roseville.

Maximum UV Index Levels in Roseville for May

The chart shows the monthly maximum UV Index (UVI) for Roseville in May, 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 May, the maximum UV index in Roseville typically reaches 10, which falls under the very high exposure category.

Data source: Roseville May 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 May Weather in Roseville Compares to Other Months

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

This table compares monthly weather conditions in Roseville, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	144 mm (5.7 inches)	84%	moderate
February Weather	10°C (51°F)	139 mm (5.5 inches)	84%	moderate
March Weather	13°C (55°F)	139 mm (5.5 inches)	83%	high
April Weather	16°C (61°F)	64 mm (2.5 inches)	81%	very high
May Weather	20°C (68°F)	31 mm (1.2 inches)	74%	very high
June Weather	24°C (76°F)	5 mm (0.2 inches)	64%	extreme
July Weather	26°C (79°F)	0 mm (0.0 inches)	44%	extreme
August Weather	26°C (78°F)	0 mm (0.0 inches)	36%	very high
September Weather	23°C (74°F)	6 mm (0.2 inches)	44%	very high
October Weather	18°C (65°F)	46 mm (1.8 inches)	65%	high
November Weather	12°C (54°F)	79 mm (3.1 inches)	84%	moderate
December Weather	9°C (48°F)	129 mm (5.1 inches)	83%	moderate