July weather forecastAtherton, CA
July
Weather in July
July, like June, is an agreeable summer month in Atherton, California, with an average temperature ranging between max 73°F (22.8°C) and min 54.5°F (12.5°C).Temperature
In Atherton, July and August are characterised by the peak of temperatures, recording an average high of 73°F (22.8°C).Humidity
The average relative humidity in July is 72%.Rainfall
The months with the least rainfall are July and August Rain falls for 1.5 days and accumulates 0.04" (1mm) of rain.Daylight
In Atherton, the average length of the day in July is 14h and 27min.On the first day of July, sunrise is at 5:51 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 8:17 pm PDT.
Sunshine
With an average of 12h of sunshine, July has the most sunshine of the year.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index, 5 in July, converts into the following recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. Around midday, solar radiation is most harmful; hence, exposure should be limited. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Atherton, CA
- Average high temperature in July: 73°F
The warmest months (with the highest average high temperature) are July and August (73°F).
The month with the lowest average high temperature is December (55.9°F).
- Average low temperature in July: 54.5°F
The month with the highest average low temperature is September (56.7°F).
The coldest month (with the lowest average low temperature) is February (46°F).
Average pressure in July
Atherton, CA
- Average pressure in July: 29.93"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in July
Atherton, CA
- Average wind speed in July: 5.7mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest months (with the lowest average wind speed) are August, September and October (5.5mph).
Average humidity in July
Atherton, CA
- Average humidity in July: 72%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (68%).
Average rainfall in July
Atherton, CA
- Average rainfall in July: 0.04"
The wettest month (with the highest rainfall) is February (2.36").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in July
Atherton, CA
- Average rainfall days in July: 1.5 days
The month with the highest number of rainy days is March (12.8 days).
The month with the least rainy days is August (0.8 days).
Average daylight in July /
Average sunshine in July
Atherton, CA
- Average daylight in July: 14h and 24min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in July: 12h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in July
Atherton, CA
- Average sunshine days in July: 27.5 days
The month with the most sunshine days is August (27.6 days).
The month with the least sunshine days is March (17.5 days).
Average UV index in July
Atherton, CA
- Average UV index in July: 5
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are November and December (UV index 3).
Average cloud cover in July
Atherton, CA
- Average cloud cover in July: 9
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in July
Atherton, 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).
