Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
As Graton steps into May, the average high-temperature is measured at a pleasant 69.1°F (20.6°C), displaying minor differences from April's 64.9°F (18.3°C). May witnesses an average nighttime temperature of 48.6°F (9.2°C).Humidity
The average relative humidity in May 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, there are 72.8 rainfall days, and 12.01" (305mm) of precipitation is accumulated.Daylight
In Graton, California, the average length of the day in May is 14h and 17min.On the first day of May, sunrise is at 6:13 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 8:29 pm PDT.
Sunshine
In Graton, the average sunshine in May is 10.5h.UV index
In May, the average daily maximum UV index in Graton is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A daily maximum UV index of 5 in May translates into the following instructions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the average humidity in May?
How much does it rain in May?
How many hours of daylight does Graton have in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Graton have in May?
What is the UV index reading in May?
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
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).
Average pressure in May
Graton, CA
- Average pressure in May: 29.98"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).
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).
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%).
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").
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).
Average daylight in May /
Average sunshine in May
Graton, CA
- Average daylight in May: 14h and 2min
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 May: 10h and 3min
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).
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).
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).
The months with the lowest UV index are January, February, November and December (UV index 3).
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).
Average visibility in May
Graton, CA
- Average visibility in May: 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).
Graton, California, USA
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