July Weather in Petaluma

Last updated: March 2, 2024

The weather in Petaluma, United States, during July is characterized by an average temperature of 18°C (65°F). Highs can soar to 30°C (86°F), while lows may dip to 11°C (52°F). Typically, the humidity level in Petaluma throughout July hovers around 70%.

11°C (52°F)

Minimum temperature

18°C (65°F)

Average temperature

30°C (86°F)

Maximum temperature

70%

Humidity

Precipitation and Sunshine hours

In July, Petaluma averages 1 mm (0.0 inches) of rainfall, typically over the course of 0 rainy days. The month enjoys an average of 14 hours 29 minutes of daylight, with the sun shining for approximately 12 hours 34 minutes each day. Additionally, there is a 66% probability of sunny days during this period.

1 mm (0.0 inches)

Precipitation

0 rainy days

Rainy days

12 hours 34 minutes

Sunshine hours

66%

Chance of sun

UV Index

In July, the UV Index in Petaluma reaches a maximum of 11, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 10 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00
UVI	1	2	3	6	8	10	11	10	8	6	4	2	1
Exposure	Low		Moderate	High	VeryHigh		Extreme	VeryHigh		High	Moderate	Low
Time to burn	45 min		30 min	25 min	15 min		10 min	15 min		25 min	30 min	45 min