Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
Clayton's May reports an average high-temperature of a moderately hot 73.9°F (23.3°C), exhibiting a minor difference from April. Clayton's nighttime temperatures in May reflect a stark contrast to the day's highs, falling to an average low of 50°F (10°C).Humidity
The average relative humidity in May in Clayton is 62%.Rainfall
In Clayton, during May, the rain falls for 3 days and regularly aggregates up to 0.2" (5mm) of precipitation. In Clayton, during the entire year, the rain falls for 50 days and collects up to 4.76" (121mm) of precipitation.Daylight
In Clayton, the average length of the day in May is 14h and 14min.On the first day of the month, sunrise is at 6:10 am and sunset at 7:58 pm. On the last day of May, in Clayton, sunrise is at 5:46 am and sunset at 8:24 pm PDT.
Sunshine
In Clayton, the average sunshine in May is 11h.UV index
In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In May, a daily UV index of 5 turns into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Clayton?
What is the average humidity in May in Clayton?
How much does it rain in Clayton in May?
How many hours of daylight does Clayton have in May?
What time are sunrise and sunset in May in Clayton?
How long on average sun shines in May in Clayton?
What is the UV index intensity in May in Clayton?
Average temperature in May
Clayton, CA
- Average high temperature in May: 73.9°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 May: 50°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 May
Clayton, CA
- Average pressure in May: 29.97"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 May
Clayton, CA
- Average wind speed in May: 7.4mph
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 May
Clayton, CA
- Average humidity in May: 62%
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 May
Clayton, CA
- Average rainfall in May: 0.2"
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 May
Clayton, CA
- Average rainfall days in May: 3 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 May /
Average sunshine in May
Clayton, CA
- Average daylight in May: 14h and 1min
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 May: 11h and 0min
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 May
Clayton, CA
- Average sunshine days in May: 27.3 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 May
Clayton, CA
- Average UV index in May: 5
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 May
Clayton, CA
- Average cloud cover in May: 21
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 May
Clayton, CA
- Average visibility in May: 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).
Clayton, California, USA
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