May weather forecast and climate
San Ramon, CA

A street in San Ramon, California, featuring a stunning beauty of golden and brown trees on both sides of the road, during autumn
A street in San Ramon, California, featuring a stunning beauty of golden and brown trees on both sides of the road, during autumn

Weather in May

The last month of the spring, May, is an agreeable month in San Ramon, California, with average temperature varying between 72.5°F (22.5°C) and 48.7°F (9.3°C).

Temperature

In San Ramon, California, the average high-temperature is relatively the same as in April - a pleasant 72.5°F (22.5°C). In San Ramon, the average low-temperature is 48.7°F (9.3°C).

Humidity

The average relative humidity in San Ramon, California, is 64%.

Rainfall

In San Ramon, during May, the rain falls for 4.6 days and regularly aggregates up to 0.55" (14mm) of precipitation. Throughout the year, in San Ramon, California, there are 67.2 rainfall days, and 10.98" (279mm) of precipitation is accumulated.

Daylight

In San Ramon, the average length of the day in May is 14.2h.

Sunshine

In San Ramon, California, the average sunshine is 10.9h.

UV index

In San Ramon, 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 average daily UV index of 5 transform into the following instructions:
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 San Ramon?

In San Ramon, California, in May, the average high-temperature is 72.5°F (22.5°C), and the average low-temperature is 48.7°F (9.3°C).

What is the average humidity in May in San Ramon?

In San Ramon, California, the average relative humidity in May is 64%.

How many days does it rain in May in San Ramon?

In San Ramon, in May, during 4.6 rainfall days, 0.55" (14mm) of precipitation is typically accumulated.

What is the average length of the day in May in San Ramon?

In San Ramon, California, the average length of the day in May is 14.2h.

How long on average sun shines in May in San Ramon?

The average sunshine in May in San Ramon, California, is 10.9h.

What is the UV index intensity in May in San Ramon?

In May, the average daily maximum UV index in San Ramon is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV radiation.

Average temperature in May
San Ramon, CA

Average temperature in May - San Ramon, CA
  • Average high temperature in May: 72.5°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is December (55.9°F).

  • Average low temperature in May: 48.7°F

The month with the highest average low temperature is September (56.5°F).
The coldest month (with the lowest average low temperature) is December (42.1°F).

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Average pressure in May
San Ramon, CA

Average pressure in May - San Ramon, CA
  • Average pressure in May: 29.98"

The month with the highest atmospheric pressure is January (30.14").
Months with the lowest atmospheric pressure are June, August and September (29.92").

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Average wind speed in May
San Ramon, CA

Average wind speed in May - San Ramon, CA
  • Average wind speed in May: 6.7mph

The windiest month (with the highest average wind speed) is May (6.7mph).
The calmest month (with the lowest average wind speed) is November (4.2mph).

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Average humidity in May
San Ramon, CA

Average humidity in May - San Ramon, CA
  • Average humidity in May: 64%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is September (57%).

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Average rainfall in May
San Ramon, CA

Average rainfall in May - San Ramon, CA
  • Average rainfall in May: 0.55"

The wettest month (with the highest rainfall) is February (2.28").
The driest month (with the least rainfall) is July (0").

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Average rainfall days in May
San Ramon, CA

Average rainfall days in May - San Ramon, CA
  • Average rainfall days in May: 4.6 days

The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (0.6 days).

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Average daylight in May /
Average sunshine in May
San Ramon, CA

Average daylight in May / Average sunshine in May - San Ramon, CA
  • Average daylight in May: 14.2h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in May: 10.9h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.8h).

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Average sunshine days in May
San Ramon, CA

Average sunshine days in May - San Ramon, CA
  • Average sunshine days in May: 25.7 days

The month with the most sunshine days is July (29.9 days).
The month with the least sunshine days is March (17.5 days).

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Average UV index in May
San Ramon, CA

Average UV index in May - San Ramon, CA
  • Average UV index in May: 5

Months with the highest UV index are June, July and August (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
San Ramon, CA

Average cloud cover in May - San Ramon, CA
  • Average cloud cover in May: 22

The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 6).

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Average visibility in May
San Ramon, CA

Average visibility in May - San Ramon, 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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