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February Weather in Santa Rosa, United States

Last updated: June 24, 2025

In February, the average temperature in Santa Rosa, United States is a mild 18°C (65°F). However, be prepared for a temperature range that can swing from a chilly -5°C (24°F) to a sweltering 36°C (97°F). You can expect about 21 mm (0.8 in) of precipitation spread over 6 days, and with an average humidity of 79%, the weather can feel quite humid. Make sure to pack accordingly!

February Temperature in Santa Rosa

In February in Santa Rosa, the average temperature is 18°C (65°F). Maximums can reach 36°C (97°F), while minimums can drop to as low as -5°C (24°F). Be prepared for a wide range of temperatures, making it essential to pack layers for your trip.

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

The chart illustrates February 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, February typically has an average temperature of 18°C (65°F), with highs reaching up to 36°C (97°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec626572768284868783776964
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.

February Precipitation in Santa Rosa

In Santa Rosa in February, the total precipitation amount is 21 mm (0.8 in), occurring over a span of 6 days.

February Precipitation Trends in Santa Rosa

The chart displays monthly precipitation patterns in Santa Rosa, with values for each month alongside February’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how February’s conditions compare to those of other months. In Santa Rosa, February typically receives around 21 mm (0.8 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec2421353081919433114653023
Data source: Precipitation data for February generated using information from the Copernicus Climate Change Service.
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February Humidity in Santa Rosa

In Santa Rosa in February, humidity is 79%. With an average temperature of 18°C (65°F), this humidity feels like walking through a warm mist, making traveling slightly uncomfortable and sticky, but offering a refreshing escape when you find moments of shade or a breeze.

February Average Humidity in Santa Rosa

This chart illustrates the average monthly humidity levels in Santa Rosa, with February’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In February, average humidity in Santa Rosa is approximately 79%, 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 February generated using information from the Copernicus Climate Change Service.

February UV Index in Santa Rosa

In Santa Rosa in February, 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 Santa Rosa.

Maximum UV Index Levels in Santa Rosa for February

The chart shows the monthly maximum UV Index (UVI) for Santa Rosa in February, 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 February, the maximum UV index in Santa Rosa typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec69101112121212111076
Data source: Santa Rosa February 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 February 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 February’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 February’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

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