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June Weather in Santa Rosa, United States

Last updated: June 24, 2025

In Santa Rosa, United States, the average temperature in June reaches a warm 32°C (89°F). Expect a range that fluctuates from a minimum of 18°C (64°F) to a scorching maximum of 46°C (116°F). Rainfall is sparse, totaling only 7 mm (0.3 in) over 0 days, while the average humidity sits at a comfortable 33%.

June Temperature in Santa Rosa

In June in Santa Rosa, the average temperature is 32°C (89°F), with maximums reaching 46°C (116°F) and minimums dipping as low as 18°C (64°F). Travelers should be prepared for hot conditions and make sure to stay hydrated while exploring.

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

The chart illustrates June 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, June typically has an average temperature of 32°C (89°F), with highs reaching up to 46°C (116°F) and lows dropping to around 18°C (64°F).
JanFebMarAprMayJunJulAugSepOctNovDec555764737989919186756655
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.

June Precipitation in Santa Rosa

In Santa Rosa in June, the precipitation amount is 7 mm (0.3 in) occurring over a span of 0 days.

June Precipitation Trends in Santa Rosa

The chart displays monthly precipitation patterns in Santa Rosa, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Santa Rosa, June typically receives around 7 mm (0.3 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec1818132173424157818
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Santa Rosa

In Santa Rosa in June humidity is 33%. With an average temperature of 32°C (89°F), this humidity feels like a warm, pleasant embrace, making it comfortable for traveling as the air is neither too sticky nor oppressive, allowing for enjoyable exploration and outdoor activities.

June Average Humidity in Santa Rosa

This chart illustrates the average monthly humidity levels in Santa Rosa, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Santa Rosa is approximately 33%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%79%67%55%40%33%34%48%64%67%77%82%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Santa Rosa

In Santa Rosa in June, 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 June

The chart shows the monthly maximum UV Index (UVI) for Santa Rosa in June, 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 June, the maximum UV index in Santa Rosa typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579111212121110864
Data source: Santa Rosa June 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 June 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 June’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 June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather13°C (55°F)18 mm (0.7 inches)76%moderate
February Weather14°C (58°F)18 mm (0.7 inches)79%high
March Weather18°C (64°F)13 mm (0.5 inches)67%very high
April Weather23°C (73°F)2 mm (0.1 inches)55%extreme
May Weather26°C (79°F)1 mm (0.0 inches)40%extreme
June Weather32°C (89°F)7 mm (0.3 inches)33%extreme
July Weather33°C (91°F)34 mm (1.3 inches)34%extreme
August Weather33°C (91°F)24 mm (0.9 inches)48%extreme
September Weather30°C (86°F)15 mm (0.6 inches)64%very high
October Weather24°C (76°F)7 mm (0.3 inches)67%very high
November Weather19°C (66°F)8 mm (0.3 inches)77%high
December Weather13°C (56°F)18 mm (0.7 inches)82%moderate

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