July weather forecastGuerneville, CA
July
Weather in July
July, like June, in Guerneville, California, is another warm summer month, with an average temperature ranging between max 80.2°F (26.8°C) and min 53.1°F (11.7°C).Temperature
The transition into July marks the average high-temperature at a still warm 80.2°F (26.8°C), differing minimally from June's 77.2°F (25.1°C). In July, a remarkable difference from daytime highs is noted, as Guerneville records an average temperature of 53.1°F (11.7°C) during the night.Humidity
In Guerneville, the average relative humidity in July is 64%.Rainfall
The months with the least rainfall are July and August Rain falls for 1.3 days and accumulates 0.04" (1mm) of rain.Daylight
In Guerneville, the average length of the day in July is 14h and 32min.On the first day of July in Guerneville, California, sunrise is at 5:52 am and sunset at 8:40 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 8:22 pm PDT.
Sunshine
The month with the most sunshine is July, with an average of 11.8h of sunshine.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.Note: In July, an average UV index of 6 transforms into the following instructions:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Guerneville, CA
- Average high temperature in July: 80.2°F
The warmest month (with the highest average high temperature) is August (81°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in July: 53.1°F
The months with the highest average low temperature are August and September (53.4°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).
Average pressure in July
Guerneville, CA
- Average pressure in July: 29.93"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in July
Guerneville, CA
- Average wind speed in July: 5.6mph
The windiest month (with the highest average wind speed) is May (7.2mph).
The calmest month (with the lowest average wind speed) is November (5mph).
Average humidity in July
Guerneville, CA
- Average humidity in July: 64%
The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is September (62%).
Average rainfall in July
Guerneville, CA
- Average rainfall in July: 0.04"
The wettest month (with the highest rainfall) is February (3.27").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in July
Guerneville, CA
- Average rainfall days in July: 1.3 days
The month with the highest number of rainy days is March (10.3 days).
The month with the least rainy days is August (0.9 days).
Average daylight in July /
Average sunshine in July
Guerneville, CA
- Average daylight in July: 14h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in July: 11h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in July
Guerneville, CA
- Average sunshine days in July: 28.9 days
The month with the most sunshine days is July (28.9 days).
The month with the least sunshine days is February (19.9 days).
Average UV index in July
Guerneville, CA
- Average UV index in July: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in July
Guerneville, CA
- Average cloud cover in July: 11
The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility in July
Guerneville, CA
- Average visibility in July: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
