April weather forecast
Graton, CA

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Weather in April

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

Temperature

Graton, California, records an average high-temperature of a comfortable 64.9°F (18.3°C) as April arrives, nearly mirroring the previous month's climate. Throughout April, Graton's nights cool down to an average of 45.5°F (7.5°C).

Humidity

The average relative humidity in April is 72%.

Rainfall

In Graton, California, during April, the rain falls for 7 days and regularly aggregates up to 0.55" (14mm) of precipitation. In Graton, during the entire year, the rain falls for 72.8 days and collects up to 12.01" (305mm) of precipitation.

Daylight

In Graton, the average length of the day in April is 13h and 14min.
On the first day of the month, sunrise is at 6:54 am and sunset at 7:35 pm. On the last day of April, sunrise is at 6:14 am and sunset at 8:02 pm PDT.

Sunshine

In April, the average sunshine is 10.1h.

UV index

In Graton, California, the average daily maximum UV index in April is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 5 during April leads to these advisories:
Act with care - The suggestion to avoid sunburn is emphasized. It's recommended to limit sun exposure when its radiation is at its peak during midday. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
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Frequently asked questions

What is the usual temperature for Graton in April?

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

What is the average humidity in April in Graton?

The average relative humidity in April in Graton is 72%.

How much does it rain in Graton in April?

In Graton, California, during April, the rain falls for 7 days and regularly aggregates up to 0.55" (14mm) of precipitation.

What is the average length of the day in April in Graton?

The average day length in April is 13h and 14min.

When are sunrise and sunset in April in Graton?

In April, on the first day of the month, sunrise is at 6:54 am and sunset at 7:35 pm. On the last day of the month, in Graton, sunrise is at 6:14 am and sunset at 8:02 pm PDT.

How many hours of sunshine does Graton have in April?

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

What is the UV index reading 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 moderate health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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

The 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"Hg

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

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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: 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 30min).

  • Average sunshine in April: 10h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

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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).
The 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

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).

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Graton, California, USA

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