July weather forecast
Sonoma, CA

July sits in the heart of the summer season in Sonoma, boasting the highest temperatures of the year, peaking at 82.8°F (28.2°C). Nighttimes remain relatively cool, offering a welcome relief from the scorching heat of the day. The weather is predominantly arid, characterized by the conspicuous absence of rainfall. With a dominant sun presence overseeing clear skies, the UV index reaches its yearly peak. Despite the high heat and the omnipresent sun, the wind speed lowers, thus maintaining a calm atmosphere in the city.

Temperature

July in Sonoma is marked by an average high-temperature of a still moderately hot 82.8°F (28.2°C), almost identical to the preceding month. A marked difference from the daytime temperatures, Sonoma's nighttime temperature falls to an average low of 54.1°F (12.3°C) in July.

Heat index

Throughout July, the heat index is calculated to be a hot 86°F (30°C). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is the result of factoring in humidity to the air temperature, indicating perceived warmth. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.

Humidity

The average relative humidity in July is 62%.

Rainfall

July and August are months with the least rain when the rain falls for 1.3 days and typically aggregates up to 0.04" (1mm) of rain.

Daylight

The average length of the day in July in Sonoma is 14h and 31min.
On the first day of July in Sonoma, sunrise is at 5:50 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 8:20 pm PDT.

Sunshine

With an average of 12h of sunshine, July has the most sunshine of the year in Sonoma.

UV index

The months with the highest UV index are June and July, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 6 in July transforms into the following instructions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.