May Weather in Atascadero, United States

Last updated: June 24, 2025

In May, the average temperature in Atascadero, United States is a pleasant 16°C (61°F). Expect minimums as low as 5°C (42°F) and maximums reaching up to 29°C (85°F). With an average humidity of 75%, the air can feel quite warm. Be prepared for light showers, as the area receives about 10 mm (0.4 in) of precipitation over 2 days.

May Temperature in Atascadero

In May in Atascadero, the average temperature is 16°C (61°F), with maximums reaching up to 29°C (85°F) and minimums dropping as low as 5°C (42°F). This variation makes it advisable to pack layers for a comfortable travel experience.

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

The chart illustrates May temperature patterns in Atascadero, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Atascadero, May typically has an average temperature of 16°C (61°F), with highs reaching up to 29°C (85°F) and lows dropping to around 5°C (42°F).

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

May Precipitation in Atascadero

In Atascadero in May, the precipitation amount is 10 mm (0.4 in) over a period of 2 days.

May Precipitation Trends in Atascadero

The chart displays monthly precipitation patterns in Atascadero, 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 Atascadero, May typically receives around 10 mm (0.4 inches) of precipitation spread over approximately 2 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Atascadero

In Atascadero in May humidity is 75%. With an average temperature of 16°C (61°F), this humidity feels like a warm, muggy embrace, making traveling somewhat uncomfortable as you may find yourself constantly adjusting your clothing and seeking shade to escape the sticky air.

May Average Humidity in Atascadero

This chart illustrates the average monthly humidity levels in Atascadero, 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 Atascadero is approximately 75%, 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 Atascadero

In Atascadero 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 Atascadero.

Maximum UV Index Levels in Atascadero for May

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

Data source: Atascadero 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 Atascadero Compares to Other Months

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

This table compares monthly weather conditions in Atascadero, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	11°C (51°F)	94 mm (3.7 inches)	80%	moderate
February Weather	11°C (52°F)	68 mm (2.7 inches)	83%	moderate
March Weather	12°C (54°F)	75 mm (3.0 inches)	80%	very high
April Weather	14°C (58°F)	20 mm (0.8 inches)	76%	very high
May Weather	16°C (61°F)	10 mm (0.4 inches)	75%	extreme
June Weather	19°C (66°F)	1 mm (0.0 inches)	74%	extreme
July Weather	20°C (68°F)	1 mm (0.0 inches)	75%	extreme
August Weather	20°C (69°F)	1 mm (0.0 inches)	72%	extreme
September Weather	20°C (68°F)	1 mm (0.0 inches)	70%	very high
October Weather	17°C (63°F)	9 mm (0.3 inches)	70%	high
November Weather	14°C (57°F)	29 mm (1.1 inches)	74%	moderate
December Weather	11°C (51°F)	62 mm (2.4 inches)	76%	moderate