May Weather in Redlands, United States

Last updated: June 24, 2025

In May, the average temperature in Redlands, United States hovers around 15°C (60°F). Expect a range from a brisk -3°C (27°F) to a warm 32°C (89°F). During this time, you can anticipate around 43 mm (1.7 in) of precipitation spread over 8 days, with an average humidity level of 58%.

May Temperature in Redlands

In May in Redlands, the average temperature is 15°C (60°F). Maximum temperatures can reach up to 32°C (89°F), while minimum temperatures can drop as low as -3°C (27°F). Make sure to pack layers for your trip, as the weather can vary significantly throughout the day.

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

The chart illustrates May temperature patterns in Redlands, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Redlands, May typically has an average temperature of 15°C (60°F), with highs reaching up to 32°C (89°F) and lows dropping to around -3°C (27°F).

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

May Precipitation in Redlands

In Redlands in May, the total precipitation amount is 43 mm (1.7 in) over the course of 8 days.

May Precipitation Trends in Redlands

The chart displays monthly precipitation patterns in Redlands, 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 Redlands, May typically receives around 43 mm (1.7 inches) of precipitation spread over approximately 8 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 Redlands

In Redlands in May humidity is 58%. With an average temperature of 15°C (60°F), this humidity feels like a refreshing embrace, making it comfortable for traveling but requiring light layers and occasional breaks to stay cool and enjoy the scenery.

May Average Humidity in Redlands

This chart illustrates the average monthly humidity levels in Redlands, 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 Redlands is approximately 58%, 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 Redlands

In Redlands in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Redlands.

Maximum UV Index Levels in Redlands for May

The chart shows the monthly maximum UV Index (UVI) for Redlands 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 Redlands typically reaches 11, which falls under the extreme exposure category.

Data source: Redlands 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 Redlands Compares to Other Months

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

This table compares monthly weather conditions in Redlands, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	39 mm (1.5 inches)	90%	moderate
February Weather	-1°C (30°F)	49 mm (1.9 inches)	89%	high
March Weather	4°C (40°F)	68 mm (2.7 inches)	81%	very high
April Weather	10°C (50°F)	30 mm (1.2 inches)	74%	very high
May Weather	15°C (60°F)	43 mm (1.7 inches)	58%	extreme
June Weather	22°C (72°F)	26 mm (1.0 inches)	47%	extreme
July Weather	25°C (77°F)	34 mm (1.3 inches)	39%	extreme
August Weather	24°C (75°F)	29 mm (1.2 inches)	39%	extreme
September Weather	19°C (66°F)	39 mm (1.5 inches)	53%	very high
October Weather	9°C (49°F)	55 mm (2.2 inches)	72%	high
November Weather	4°C (40°F)	22 mm (0.9 inches)	84%	moderate
December Weather	-2°C (29°F)	37 mm (1.5 inches)	90%	moderate