nomadseason

March Weather in Santa Rosa, United States

Last updated: June 24, 2025

In March, the average temperature in Santa Rosa, United States hovers around 22°C (72°F), but don’t be surprised by the extremes—minimums can dip to 3°C (38°F), while maximums can soar to 35°C (96°F). Expect approximately 35 mm (1.4 in) of precipitation spread over 6 days, accompanied by a notably high humidity level of 76%.

March Temperature in Santa Rosa

In March in Santa Rosa, the average temperature is 22°C (72°F). Maximums can reach 35°C (96°F), while minimums can be as low as 3°C (38°F). Visitors should be prepared for a wide range of temperatures, making it essential to pack accordingly for both warm days and cooler nights.

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

The chart illustrates March 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, March typically has an average temperature of 22°C (72°F), with highs reaching up to 35°C (96°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec626572768284868783776964
Data source: Temperature data for Santa Rosa generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

March Precipitation in Santa Rosa

In Santa Rosa in March, the total precipitation amount is 35 mm (1.4 in) spread over a period of 6 days.

March Precipitation Trends in Santa Rosa

The chart displays monthly precipitation patterns in Santa Rosa, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Santa Rosa, March typically receives around 35 mm (1.4 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec2421353081919433114653023
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

March Humidity in Santa Rosa

In Santa Rosa in March humidity is 76%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, making travel slightly uncomfortable as you navigate through the thick, saturated air.

March Average Humidity in Santa Rosa

This chart illustrates the average monthly humidity levels in Santa Rosa, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Santa Rosa is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%79%76%77%80%73%66%65%73%76%80%86%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Santa Rosa

In Santa Rosa in March, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Santa Rosa.

Maximum UV Index Levels in Santa Rosa for March

The chart shows the monthly maximum UV Index (UVI) for Santa Rosa in March, 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 March, the maximum UV index in Santa Rosa typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec69101112121212111076
Data source: Santa Rosa March 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 March 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 March’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 March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather17°C (62°F)24 mm (1.0 inches)83%high
February Weather18°C (65°F)21 mm (0.8 inches)79%very high
March Weather22°C (72°F)35 mm (1.4 inches)76%very high
April Weather25°C (77°F)30 mm (1.2 inches)77%extreme
May Weather28°C (82°F)81 mm (3.2 inches)80%extreme
June Weather29°C (85°F)91 mm (3.6 inches)73%extreme
July Weather30°C (86°F)94 mm (3.7 inches)66%extreme
August Weather30°C (87°F)33 mm (1.3 inches)65%extreme
September Weather28°C (83°F)114 mm (4.5 inches)73%extreme
October Weather25°C (77°F)64 mm (2.5 inches)76%very high
November Weather21°C (69°F)30 mm (1.2 inches)80%high
December Weather18°C (65°F)23 mm (0.9 inches)86%high

Compare Santa Rosa's Climate with Cities Worldwide