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April Weather in Santa Rosa, United States

Last updated: June 24, 2025

In April, the average temperature in Santa Rosa, United States settles at a comfortable 14°C (58°F). During this month, temperatures can vary dramatically, with a minimum of -6°C (21°F) and a maximum reaching up to 32°C (89°F). Expect 27 mm (1.1 in) of precipitation spread over about 3 days, and enjoy an average humidity level of 61%.

April Temperature in Santa Rosa

In April in Santa Rosa, the average temperature is 14°C (58°F). Maximum temperatures can reach as high as 32°C (89°F), while minimums can dip down to -6°C (21°F). Be prepared for a wide range of temperatures when traveling to Santa Rosa during this month.

April Weather in Santa Rosa: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Santa Rosa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Rosa, April typically has an average temperature of 14°C (58°F), with highs reaching up to 32°C (89°F) and lows dropping to around -6°C (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec394251586877797772584941
Data source: Temperature data for Santa Rosa generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Santa Rosa

In Santa Rosa in April, the total precipitation amount is 27 mm (1.1 in) over the course of 3 days.

April Precipitation Trends in Santa Rosa

The chart displays monthly precipitation patterns in Santa Rosa, 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 Santa Rosa, April typically receives around 27 mm (1.1 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec151228273041315633481411
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Santa Rosa

In Santa Rosa in April humidity is 61%. With an average temperature of 14°C (58°F), this humidity feels like a refreshing embrace, making for comfortable travel conditions that invite exploration while ensuring you stay hydrated and refreshed.

April Average Humidity in Santa Rosa

This chart illustrates the average monthly humidity levels in Santa Rosa, 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 Santa Rosa is approximately 61%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%75%61%62%69%74%75%78%76%76%80%77%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Santa Rosa

In Santa Rosa in April, 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 Santa Rosa.

Maximum UV Index Levels in Santa Rosa for April

The chart shows the monthly maximum UV Index (UVI) for Santa Rosa 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 Santa Rosa typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec479111213121211854
Data source: Santa Rosa 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 Santa Rosa Compares to Other Months

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

This table compares monthly weather conditions in Santa Rosa, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)15 mm (0.6 inches)74%moderate
February Weather6°C (43°F)12 mm (0.5 inches)75%high
March Weather11°C (51°F)28 mm (1.1 inches)61%very high
April Weather14°C (58°F)27 mm (1.1 inches)61%extreme
May Weather20°C (68°F)30 mm (1.2 inches)69%extreme
June Weather25°C (78°F)41 mm (1.6 inches)74%extreme
July Weather26°C (80°F)31 mm (1.2 inches)75%extreme
August Weather25°C (77°F)56 mm (2.2 inches)78%extreme
September Weather22°C (72°F)33 mm (1.3 inches)76%extreme
October Weather14°C (58°F)47 mm (1.9 inches)76%very high
November Weather9°C (49°F)14 mm (0.6 inches)80%moderate
December Weather5°C (42°F)11 mm (0.4 inches)77%moderate

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