April weather forecast and climate
Graton, CA

Weather in April

April in Graton, California, is a comfortable spring month, with temperature in the range of an average high of 64.9°F (18.3°C) and an average low of 45.5°F (7.5°C).

Temperature

In April, the average high-temperature is relatively the same as in March - a comfortable 64.9°F (18.3°C). The average low-temperature, in Graton, is 45.5°F (7.5°C).

Humidity

In April, the average relative humidity is 72%.

Rainfall

In Graton, during 7 rainfall days, 0.55" (14mm) of precipitation is typically accumulated. Throughout the year, in Graton, there are 72.8 rainfall days, and 12.01" (305mm) of precipitation is accumulated.

Daylight

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

Sunshine

In Graton, California, the average sunshine is 10.1h.

UV index

In April, the average daily maximum UV index in Graton is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Graton?

The average high-temperature, in April, is 64.9°F (18.3°C), while the average low-temperature is 45.5°F (7.5°C).

What is the average humidity in April in Graton?

In April, the average relative humidity in Graton, California, is 72%.

How many days does it rain in April in Graton?

In Graton, in April, during 7 rainfall days, 0.55" (14mm) of precipitation is typically accumulated.

How many hours of daylight does Graton have in April?

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

How many hours of sunshine does Graton have in April?

In April, the average sunshine in Graton is 10.1h.

What is the UV index intensity in April in Graton?

In Graton, California, the average daily maximum UV index in April is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to the Sun's UV rays.

Average temperature in April
Graton, CA

Average temperature in April - Graton, CA
  • Average high temperature in April: 64.9°F

The warmest month (with the highest average high temperature) is August (79.7°F).
The month with the lowest average high temperature is December (55.6°F).

  • Average low temperature in April: 45.5°F

Months with the highest average low temperature are August and September (54.7°F).
The coldest month (with the lowest average low temperature) is December (41.9°F).

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Average pressure in April
Graton, CA

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

The month with the highest atmospheric pressure is January (30.13").
Months with the lowest atmospheric pressure are June, August and September (29.92").

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Average wind speed in April
Graton, CA

Average wind speed in April - Graton, CA
  • Average wind speed in April: 7mph

The windiest month (with the highest average wind speed) is May (7.1mph).
The calmest month (with the lowest average wind speed) is November (4.9mph).

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Average humidity in April
Graton, CA

Average humidity in April - Graton, CA
  • Average humidity in April: 72%

The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is September (63%).

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Average rainfall in April
Graton, CA

Average rainfall in April - Graton, CA
  • Average rainfall in April: 0.55"

The wettest month (with the highest rainfall) is February (2.64").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in April
Graton, CA

Average rainfall days in April - Graton, CA
  • Average rainfall days in April: 7 days

The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (0.8 days).

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

Average daylight in April / Average sunshine in April - Graton, 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: 9.5h).

  • Average sunshine in April: 10.1h

The month with the most sunshine is July (Average sunshine: 11.9h).
The month with the least sunshine is December (Average sunshine: 5.7h).

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Average sunshine days in April
Graton, CA

Average sunshine days in April - Graton, CA
  • Average sunshine days in April: 21.8 days

The month with the most sunshine days is July (27.2 days).
The month with the least sunshine days is March (17.1 days).

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Average UV index in April
Graton, CA

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

The month with the highest UV index is June (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
Graton, CA

Average cloud cover in April - Graton, CA
  • Average cloud cover in April: 29

The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 9).

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Average visibility in April
Graton, CA

Average visibility in April - Graton, 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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