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July Weather in Santa Rosa, United States

Last updated: June 24, 2025

In July, the average temperature in Santa Rosa, United States reaches a warm 30°C (86°F). Expect a comfortable low of 21°C (70°F), while the highs can soar up to a scorching 41°C (106°F). During this month, there's an average precipitation of 94 mm (3.7 in) spread over 10 days, and the average humidity sits at a moderate 66%. Plan your activities accordingly to make the most of this vibrant season!

July Temperature in Santa Rosa

In July in Santa Rosa, the average temperature is 30°C (86°F). The maximum can reach 41°C (106°F), and the minimum can be as low as 21°C (70°F). It's important to prepare for both hot days and cooler evenings when traveling to ensure a comfortable experience.

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

The chart illustrates July 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, July typically has an average temperature of 30°C (86°F), with highs reaching up to 41°C (106°F) and lows dropping to around 21°C (70°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.

July Precipitation in Santa Rosa

In Santa Rosa in July, the precipitation amount is 94 mm (3.7 in) over a duration of 10 days.

July Precipitation Trends in Santa Rosa

The chart displays monthly precipitation patterns in Santa Rosa, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Santa Rosa, July typically receives around 94 mm (3.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec2421353081919433114653023
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Santa Rosa

In Santa Rosa in July humidity is 66%. With an average temperature of 30°C (86°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making any outdoor activity more demanding and necessitating regular breaks to hydrate and cool off.

July Average Humidity in Santa Rosa

This chart illustrates the average monthly humidity levels in Santa Rosa, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Santa Rosa is approximately 66%, 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 July generated using information from the Copernicus Climate Change Service.

July UV Index in Santa Rosa

In Santa Rosa in July, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Santa Rosa.

Maximum UV Index Levels in Santa Rosa for July

The chart shows the monthly maximum UV Index (UVI) for Santa Rosa in July, 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 July, the maximum UV index in Santa Rosa typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec69101112121212111076
Data source: Santa Rosa July 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 July 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 July’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 July’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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