May Weather in Roseville, United States

Last updated: June 24, 2025

In May, the average temperature in Roseville, United States is a comfortable 18°C (64°F). However, be prepared for fluctuations, as temperatures can dip to a minimum of 0°C (32°F) and soar to a maximum of 36°C (96°F). Visitors should also anticipate 170 mm (6.7 in) of precipitation spread across about 15 days, contributing to an average humidity of 78%.

May Temperature in Roseville

In May in Roseville, the average temperature is 18°C (64°F). The maximum can reach 36°C (96°F), and the minimum can be as low as 0°C (32°F). This diverse range of temperatures makes Roseville an exciting destination for travelers seeking both warm and cool weather experiences.

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 18°C (64°F), with highs reaching up to 36°C (96°F) and lows dropping to around 0°C (32°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 total precipitation amount is 170 mm (6.7 in) over the course of 15 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 170 mm (6.7 inches) of precipitation spread over approximately 15 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 78%. With an average temperature of 18°C (64°F), this humidity feels like a warm, thick blanket wrapping around you, making traveling feel a bit sticky and sluggish, yet the coolness of the air tempers the intensity, inviting you to explore at a leisurely pace.

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 78%, 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 is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For 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 9, 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	-3°C (26°F)	58 mm (2.3 inches)	81%	moderate
February Weather	-2°C (29°F)	62 mm (2.5 inches)	81%	moderate
March Weather	5°C (42°F)	110 mm (4.3 inches)	81%	high
April Weather	10°C (51°F)	102 mm (4.0 inches)	82%	very high
May Weather	18°C (64°F)	170 mm (6.7 inches)	78%	very high
June Weather	24°C (75°F)	141 mm (5.6 inches)	81%	extreme
July Weather	25°C (78°F)	96 mm (3.8 inches)	79%	very high
August Weather	24°C (75°F)	80 mm (3.1 inches)	77%	very high
September Weather	21°C (70°F)	96 mm (3.8 inches)	78%	very high
October Weather	13°C (55°F)	119 mm (4.7 inches)	78%	high
November Weather	4°C (40°F)	51 mm (2.0 inches)	87%	moderate
December Weather	1°C (34°F)	48 mm (1.9 inches)	84%	low