May weather forecast and climate
Graton, CA

Weather in May

May, the last month of the spring, in Graton, is a pleasant month, with average temperature varying between 69.1°F (20.6°C) and 48.6°F (9.2°C).

Temperature

In Graton, the average high-temperature in May is almost the same as in April - a pleasant 69.1°F (20.6°C). In May, in Graton, the average low-temperature is 48.6°F (9.2°C).

Humidity

In Graton, the average relative humidity is 70%.

Rainfall

In Graton, in May, it is raining for 5.3 days, with typically 0.55" (14mm) of accumulated precipitation. Throughout the year, in Graton, California, there are 72.8 rainfall days, and 12.01" (305mm) of precipitation is accumulated.

Daylight

In Graton, the average length of the day is 14.3h.

Sunshine

In May, the average sunshine in Graton is 10.5h.

UV index

The average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. 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.
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FAQ

What is the temperature in May in Graton?

In Graton, in May, the average high-temperature is 69.1°F (20.6°C), and the average low-temperature is 48.6°F (9.2°C).

What is the average humidity in May in Graton?

In May, the average relative humidity in Graton, California, is 70%.

How much does it rain in Graton in May?

In May, in Graton, California, the rain falls for 5.3 days. Throughout May, 0.55" (14mm) of precipitation is accumulated.

How many hours of daylight does Graton have in May?

In Graton, California, the average length of the day in May is 14.3h.

How many hours of sunshine does Graton have in May?

The average sunshine in May in Graton, California, is 10.5h.

What is the UV index intensity in May in Graton?

The average daily maximum UV index in May in Graton is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in May
Graton, CA

Average temperature in May - Graton, CA
  • Average high temperature in May: 69.1°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 May: 48.6°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 May
Graton, CA

Average pressure in May - Graton, CA
  • Average pressure in May: 29.98"

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 May
Graton, CA

Average wind speed in May - Graton, CA
  • Average wind speed in May: 7.1mph

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 May
Graton, CA

Average humidity in May - Graton, CA
  • Average humidity in May: 70%

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 May
Graton, CA

Average rainfall in May - Graton, CA
  • Average rainfall in May: 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 May
Graton, CA

Average rainfall days in May - Graton, CA
  • Average rainfall days in May: 5.3 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 May /
Average sunshine in May
Graton, CA

Average daylight in May / Average sunshine in May - Graton, CA
  • Average daylight in May: 14.3h

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 May: 10.5h

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 May
Graton, CA

Average sunshine days in May - Graton, CA
  • Average sunshine days in May: 23.4 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 May
Graton, CA

Average UV index in May - Graton, CA
  • Average UV index in May: 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 May
Graton, CA

Average cloud cover in May - Graton, CA
  • Average cloud cover in May: 26

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 May
Graton, CA

Average visibility in May - Graton, CA
  • Average visibility in May: 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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