Sonoma
California, USA
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Sonoma, CA

Neat rows of vines in a vineyard farm in Sonoma, California, the sun rays beaming through the cloudy sunset sky, and distant hilly silhouettes
Neat rows of vines in a vineyard farm in Sonoma, California, the sun rays beaming through the cloudy sunset sky, and distant hilly silhouettes
April, the same as March, is another comfortable spring month in Sonoma, California, with temperature in the range of an average high of 66.7°F (19.3°C) and an average low of 45°F (7.2°C).

Temperature

In April, the average high-temperature slightly increases, from 61.3°F (16.3°C) in March, to a still comfortable 66.7°F (19.3°C). In April, the average low-temperature is 45°F (7.2°C).

Humidity

In Sonoma, the average relative humidity is 71%.

Rainfall

In Sonoma, in April, it is raining for 7.8 days, with typically 0.75" (19mm) of accumulated precipitation. Throughout the year, in Sonoma, California, there are 73.3 rainfall days, and 15.47" (393mm) of precipitation is accumulated.

Daylight

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

Sunshine

In Sonoma, California, the average sunshine in April is 10h.

UV index

The average daily maximum UV index in Sonoma, California, is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in April in Sonoma?

The average high-temperature, in April, in Sonoma, California, is 66.7°F (19.3°C), while the average low-temperature is 45°F (7.2°C).

What is the average humidity in April in Sonoma?

In April, the average relative humidity is 71%.

How many days does it rain in April in Sonoma?

In Sonoma, during April, the rain falls for 7.8 days and regularly aggregates up to 0.75" (19mm) of precipitation.

How many hours of daylight does Sonoma have in April?

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

How long on average sun shines in April in Sonoma?

In Sonoma, the average sunshine in April is 10h.

What is the UV index reading in April in Sonoma?

In Sonoma, the average daily maximum UV index in April is 5. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to the UV radiation.
Average temperature in April - Sonoma, CA
  • Average high temperature in April: 66.7°F

The warmest month (with the highest average high temperature) is August (82.9°F).
The month with the lowest average high temperature is December (55°F).

  • Average low temperature in April: 45°F

The month with the highest average low temperature is August (54.9°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).

Average humidity in April - Sonoma, CA
  • Average humidity in April: 71%

The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is September (59%).

Average rainfall in April - Sonoma, CA
  • Average rainfall in April: 0.75"

The wettest month (with the highest rainfall) is February (3.43").
Driest months (with the lowest rainfall) are July and August (0.04").

Average rainfall days in April - Sonoma, CA
  • Average rainfall days in April: 7.8 days

The month with the highest number of rainy days is March (13.4 days).
The month with the lowest number of rainy days is August (0.8 days).

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

The month with the longest days is June (Average daylight: 14.8h).
The month with shortest days is December (Average daylight: 9.5h).

  • Average sunshine in April: 10h

The month with most sunshine is July (Average sunshine: 12h).
The month with least sunshine is December (Average sunshine: 5.6h).

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

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