Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
April's arrival signals a modest temperature shift, moving from a comfortable 63°F (17.2°C) in March to an agreeable 68.7°F (20.4°C). Clayton anticipates a considerable cooling off from the daytime high to an average minimum temperature of 46.4°F (8°C) in April.Humidity
In April, the average relative humidity is 67%.Rainfall
In Clayton, in April, it is raining for 5.6 days, with typically 0.28" (7mm) of accumulated 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, California, the average length of the day in April is 13h and 13min.On the first day of the month, sunrise is at 6:51 am and sunset at 7:31 pm. On the last day of April, in Clayton, sunrise is at 6:11 am and sunset at 7:58 pm PDT.
Sunshine
In April, the average sunshine in Clayton is 10.4h.UV index
The average daily maximum UV index in April in Clayton is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high UV index of 5 in April translates into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Clayton in April?
What is the average humidity in April in Clayton?
How much does it rain in Clayton in April?
How many hours of daylight does Clayton have in April?
When are sunrise and sunset in April in Clayton?
How long on average sun shines in April in Clayton?
How high is the UV index in April in Clayton?
Average temperature in April
Clayton, CA
- Average high temperature in April: 68.7°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 April: 46.4°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 April
Clayton, CA
- Average pressure in April: 30.03"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 April
Clayton, CA
- Average wind speed in April: 6.5mph
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 April
Clayton, CA
- Average humidity in April: 67%
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 April
Clayton, CA
- Average rainfall in April: 0.28"
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 April
Clayton, CA
- Average rainfall days in April: 5.6 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 April /
Average sunshine in April
Clayton, CA
- Average daylight in April: 13h 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 April: 10h and 2min
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 April
Clayton, CA
- Average sunshine days in April: 23.9 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 April
Clayton, CA
- Average UV index in April: 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 April
Clayton, CA
- Average cloud cover in April: 27
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 April
Clayton, CA
- Average visibility in April: 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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