April weather forecastDiablo, CA
April
Weather in April
April in Diablo, California, is an agreeable spring month, with an average temperature fluctuating between 45.7°F (7.6°C) and 68°F (20°C).Temperature
The average high-temperature is an agreeable 68°F (20°C) in April, hardly different from the 63°F (17.2°C) recorded in March. April nights indicate a noticeable temperature drop from the daytime highs, with an average reading lowering to a frosty 45.7°F (7.6°C).Humidity
In Diablo, the average relative humidity in April is 68%.Rainfall
In Diablo, in April, it is raining for 7.1 days, with typically 0.67" (17mm) of accumulated precipitation. Throughout the year, there are 65.6 rainfall days, and 11.22" (285mm) of precipitation is accumulated.Daylight
In Diablo, 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, sunrise is at 6:11 am and sunset at 7:57 pm PDT.
Sunshine
The average sunshine in April is 10.3h.UV index
In Diablo, the average daily maximum UV index in April is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In April, the maximum UV index of 5 suggests these recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Diablo, CA
- Average high temperature in April: 68°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (55.8°F).
- Average low temperature in April: 45.7°F
The months with the highest average low temperature are August and September (56.7°F).
The coldest month (with the lowest average low temperature) is January (42.1°F).
Average pressure in April
Diablo, CA
- Average pressure in April: 30.03"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in April
Diablo, CA
- Average wind speed in April: 6.2mph
The windiest month (with the highest average wind speed) is May (6.9mph).
The calmest month (with the lowest average wind speed) is November (4.3mph).
Average humidity in April
Diablo, CA
- Average humidity in April: 68%
The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is September (57%).
Average rainfall in April
Diablo, CA
- Average rainfall in April: 0.67"
The wettest month (with the highest rainfall) is February (2.36").
The driest months (with the least rainfall) are July and August (0").
Average rainfall days in April
Diablo, CA
- Average rainfall days in April: 7.1 days
The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (0.6 days).
Average daylight in April /
Average sunshine in April
Diablo, CA
- Average daylight in April: 13h and 12min
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 April: 10h and 18min
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
Diablo, CA
- Average sunshine days in April: 21.8 days
The month with the most sunshine days is July (30.2 days).
The month with the least sunshine days is March (17.6 days).
Average UV index in April
Diablo, 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
Diablo, 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
Diablo, 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).
