April Weather in Atascadero, United States

Last updated: June 24, 2025

In April, the average temperature in Atascadero, United States is a comfortable 14°C (58°F). However, temperatures can range from a chilly 4°C (39°F) to a warm 30°C (86°F). Expect about 20 mm (0.8 in) of precipitation spread over 3 days, while the average humidity lingers around a hefty 76%.

April Temperature in Atascadero

In April in Atascadero, the average temperature is 14°C (58°F). Maximum temperatures can reach 30°C (86°F), while minimums can drop as low as 4°C (39°F). It's an ideal time for travelers to enjoy mild weather while exploring the attractions of Atascadero.

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

The chart illustrates April 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, April typically has an average temperature of 14°C (58°F), with highs reaching up to 30°C (86°F) and lows dropping to around 4°C (39°F).

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

April Precipitation in Atascadero

In Atascadero in April, the precipitation amount is 20 mm (0.8 in) accumulated over a period of 3 days.

April Precipitation Trends in Atascadero

The chart displays monthly precipitation patterns in Atascadero, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Atascadero, April typically receives around 20 mm (0.8 inches) of precipitation spread over approximately 3 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

April Humidity in Atascadero

In Atascadero in April humidity is 76%. With an average temperature of 14°C (58°F), this humidity feels like a warm, thick blanket wrapping around you, making outdoor activities feel sticky and draining, and prompting travelers to seek shade and stay hydrated often.

April Average Humidity in Atascadero

This chart illustrates the average monthly humidity levels in Atascadero, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Atascadero is approximately 76%, offering insight into how humid the weather typically is during this month.

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

April UV Index in Atascadero

In Atascadero in April, 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 Atascadero.

Maximum UV Index Levels in Atascadero for April

The chart shows the monthly maximum UV Index (UVI) for Atascadero in April, 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 April, the maximum UV index in Atascadero typically reaches 9, which falls under the very high exposure category.

Data source: Atascadero April 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 April 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 April’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 April’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