May weather forecast
Santa Rosa, CA

Set in a scenic valley, the Camarillo region of Santa Rosa, California, has great modern homes and is neared by scenic rugged mountain layouts
Set in a scenic valley, the Camarillo region of Santa Rosa, California, has great modern homes and is neared by scenic rugged mountain layouts

Weather in May

The last month of the spring, May, is a pleasant month in Santa Rosa, California, with temperature in the range of an average low of 48.6°F (9.2°C) and an average high of 69.1°F (20.6°C).

Temperature

In Santa Rosa, the average high-temperature in May is practically the same as in April - an agreeable 69.1°F (20.6°C). In May, the average low-temperature is 48.6°F (9.2°C).

Humidity

In May, the average relative humidity in Santa Rosa is 70%.

Rainfall

In Santa Rosa, it is raining for 5.3 days, with typically 0.55" (14mm) of accumulated precipitation. In Santa Rosa, during the entire year, the rain falls for 72.8 days and collects up to 12.01" (305mm) of precipitation.

Daylight

In May, the average length of the day in Santa Rosa is 14h and 17min.
On the first day of the month, sunrise is at 6:13 am and sunset at 8:02 pm. On the last day of May, sunrise is at 5:48 am and sunset at 8:28 pm PDT.

Sunshine

In May, the average sunshine is 10.5h.

UV index

In May, the average daily maximum UV index in Santa Rosa, California, is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 5 in May interpret into the following advice:
Take precautions - Protection against 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 May in Santa Rosa?

In May, in Santa Rosa, California, 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 Santa Rosa?

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

How many days does it rain in May in Santa Rosa?

In Santa Rosa, during May, the rain falls for 5.3 days and regularly aggregates up to 0.55" (14mm) of precipitation.

How many hours of daylight does Santa Rosa have in May?

The average day length in May in Santa Rosa is 14h and 17min.

What time are sunrise and sunset in May in Santa Rosa?

On the first day of May in Santa Rosa, sunrise is at 6:13 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:28 pm PDT.

How long on average sun shines in May in Santa Rosa?

In May, the average sunshine duration in Santa Rosa is 10.5h.

What is the UV index intensity in May in Santa Rosa?

The average daily maximum UV index in May in Santa Rosa is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Santa Rosa, CA

Average temperature in May - Santa Rosa, 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).

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Average pressure in May
Santa Rosa, CA

Average pressure in May - Santa Rosa, 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).

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Average wind speed in May
Santa Rosa, CA

Average wind speed in May - Santa Rosa, 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
Santa Rosa, CA

Average humidity in May - Santa Rosa, 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
Santa Rosa, CA

Average rainfall in May - Santa Rosa, 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
Santa Rosa, CA

Average rainfall days in May - Santa Rosa, 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
Santa Rosa, CA

Average daylight in May / Average sunshine in May - Santa Rosa, CA
  • Average daylight in May: 14h and 17min

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 32min).

  • Average sunshine in May: 10h and 30min

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 May
Santa Rosa, CA

Average sunshine days in May - Santa Rosa, 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
Santa Rosa, CA

Average UV index in May - Santa Rosa, 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).

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Average cloud cover in May
Santa Rosa, CA

Average cloud cover in May - Santa Rosa, 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
Santa Rosa, CA

Average visibility in May - Santa Rosa, 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).

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