July weather forecastClayton, CA
July
Weather in July
July, like June, in Clayton, California, is a moderately hot summer month, with an average temperature varying between 56.1°F (13.4°C) and 85.6°F (29.8°C).Temperature
In Clayton, July is the month with the highest recorded average temperatures, measuring a high of 85.6°F (29.8°C) and a low of 56.1°F (13.4°C).Heat index
The heat index in July is estimated at a tropical 89.6°F (32°C). Fatigue might occur with continuous exposure and activity, potentially causing heat cramps.Heat index determinations are made taking into account the shade and light air movements. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', gauges the sensation of temperature factoring in the air's moisture content. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are primarily vital for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Humidity
In Clayton, the average relative humidity in July is 56%.Rainfall
The months with the least rainfall in Clayton are July and August Rain falls for 1.4 days and accumulates 0.04" (1mm) of rain.Daylight
The average length of the day in July in Clayton is 14h and 29min.On the first day of July, sunrise is at 5:49 am and sunset at 8:34 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 8:17 pm PDT.
Sunshine
With an average of 12.1h of sunshine, July has the most sunshine of the year in Clayton.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index in Clayton. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In July, the average maximum UV index of 6 translates into the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Clayton, CA
- Average high temperature in July: 85.6°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in July: 56.1°F
The month with the highest average low temperature is September (57.6°F).
The coldest month (with the lowest average low temperature) is January (41.7°F).
Average pressure in July
Clayton, CA
- Average pressure in July: 29.93"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in July
Clayton, CA
- Average wind speed in July: 7mph
The windiest month (with the highest average wind speed) is May (7.4mph).
The calmest month (with the lowest average wind speed) is November (4.3mph).
Average humidity in July
Clayton, CA
- Average humidity in July: 56%
The months with the highest relative humidity are January and March (73%).
The months with the lowest relative humidity are September and October (55%).
Average rainfall in July
Clayton, CA
- Average rainfall in July: 0.04"
The wettest month (with the highest rainfall) is February (0.98").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in July
Clayton, CA
- Average rainfall days in July: 1.4 days
The month with the highest number of rainy days is March (8.6 days).
The month with the least rainy days is August (0.8 days).
Average daylight in July /
Average sunshine in July
Clayton, 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 36min).
- Average sunshine in July: 12h and 6min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in July
Clayton, CA
- Average sunshine days in July: 29.1 days
The month with the most sunshine days is August (29.4 days).
The month with the least sunshine days is March (21.7 days).
Average UV index in July
Clayton, 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
Clayton, CA
- Average cloud cover in July: 6
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 6).
Average visibility in July
Clayton, 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).
