April weather forecast and climate
Diablo, CA

Weather in April

April is a pleasant spring month in Diablo, California, with average temperature ranging between max 68°F (20°C) and min 45.7°F (7.6°C).

Temperature

In April, the average high-temperature is essentially the same as in March - a pleasant 68°F (20°C). In Diablo, the average low-temperature is 45.7°F (7.6°C).

Humidity

In April, the average relative humidity in Diablo is 68%.

Rainfall

In Diablo, during April, the rain falls for 7.1 days and regularly aggregates up to 0.67" (17mm) of precipitation. Throughout the year, in Diablo, California, there are 65.6 rainfall days, and 11.22" (285mm) of precipitation is accumulated.

Daylight

The average length of the day in April is 13.2h.

Sunshine

In Diablo, the average sunshine in April is 10.3h.

UV index

In April, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV radiation for the ordinary person.
Note: In April, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in April in Diablo?

The average high-temperature, in April, is 68°F (20°C), while the average low-temperature is 45.7°F (7.6°C).

What is the average humidity in April in Diablo?

In Diablo, the average relative humidity in April is 68%.

How many days does it rain in April in Diablo?

In April, in Diablo, the rain falls for 7.1 days. Throughout April, 0.67" (17mm) of precipitation is accumulated.

How many hours of daylight does Diablo have in April?

In Diablo, California, the average length of the day in April is 13.2h.

How long on average sun shines in April in Diablo?

In Diablo, the average sunshine in April is 10.3h.

What is the UV index intensity in April in Diablo?

In Diablo, the average daily maximum UV index in April is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.

Average temperature in April
Diablo, CA

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

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).

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Average pressure in April
Diablo, CA

Average pressure in April - Diablo, CA
  • Average pressure in April: 30.03"

The month with the highest atmospheric pressure is January (30.14").
Months with the lowest atmospheric pressure are June, August and September (29.92").

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Average wind speed in April
Diablo, CA

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).

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Average humidity in April
Diablo, CA

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%).

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Average rainfall in April
Diablo, CA

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").

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Average rainfall days in April
Diablo, CA

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).

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Average daylight in April /
Average sunshine in April
Diablo, CA

Average daylight in April / Average sunshine in April - Diablo, CA
  • Average daylight in April: 13.2h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in April: 10.3h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.8h).

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Average sunshine days in April
Diablo, CA

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).

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Average UV index in April
Diablo, CA

Average UV index in April - Diablo, CA
  • Average UV index in April: 5

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in April
Diablo, CA

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).

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Average visibility in April
Diablo, CA

Average visibility in April - Diablo, CA
  • Average visibility in April: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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