May weather forecast
San Lorenzo, CA

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Weather in May

The last month of the spring, May, is an agreeable month in San Lorenzo, California, with temperature in the range of an average low of 49.5°F (9.7°C) and an average high of 69.4°F (20.8°C).

Temperature

May's climate shows a minor adjustment in average high-temperatures to an agreeable 69.4°F (20.8°C) from April's 65.8°F (18.8°C). An average nighttime temperature of 49.5°F (9.7°C) is recorded during May.

Humidity

In May, the average relative humidity is 68%.

Rainfall

In San Lorenzo, in May, during 3.7 rainfall days, 0.24" (6mm) of precipitation is typically accumulated. Throughout the year, there are 56.9 rainfall days, and 4.06" (103mm) of precipitation is accumulated.

Daylight

In San Lorenzo, the average length of the day in May is 14h and 13min.
On the first day of May in San Lorenzo, sunrise is at 6:11 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:24 pm PDT.

Sunshine

In May, the average sunshine is 10.9h.

UV index

In May, 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 Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 5 in May translates into this advice:
Adopt protective measures - It is advised to guard against sun damage. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.

Frequently asked questions

What is the temperature in May?

In San Lorenzo, 69.4°F (20.8°C) is the average high-temperature and 49.5°F (9.7°C) is the average low-temperature during May.

What is the average humidity in May?

In San Lorenzo, the average relative humidity in May is 68%.

How many days does it rain in May?

In San Lorenzo, during May, the rain falls for 3.7 days and regularly aggregates up to 0.24" (6mm) of precipitation.

What is the average length of the day in May?

In San Lorenzo, the average day length in May is 14h and 13min.

When is the sunrise / sunset in May in San Lorenzo?

In May, on the first day of the month, sunrise is at 6:11 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:24 pm PDT.

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

The average sunshine duration in May is 10.9h.

How high is the UV index in May?

In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
San Lorenzo, CA

Average temperature in May - San Lorenzo, CA
  • Average high temperature in May: 69.4°F

The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is December (56.1°F).

  • Average low temperature in May: 49.5°F

The month with the highest average low temperature is September (56.5°F).
The coldest months (with the lowest average low temperature) are January and December (44.1°F).

Average pressure in May
San Lorenzo, CA

Average pressure in May - San Lorenzo, 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
San Lorenzo, CA

Average wind speed in May - San Lorenzo, 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 (4.7mph).

Average humidity in May
San Lorenzo, CA

Average humidity in May - San Lorenzo, CA
  • Average humidity in May: 68%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is September (62%).

Average rainfall in May
San Lorenzo, CA

Average rainfall in May - San Lorenzo, CA
  • Average rainfall in May: 0.24"

The wettest month (with the highest rainfall) is February (0.87").
The driest months (with the least rainfall) are June, July and August (0.04").

Average rainfall days in May
San Lorenzo, CA

Average rainfall days in May - San Lorenzo, CA
  • Average rainfall days in May: 3.7 days

The month with the highest number of rainy days is March (10.5 days).
The month with the least rainy days is August (0.7 days).

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

Average daylight in May / Average sunshine in May - San Lorenzo, CA
  • Average daylight in May: 14h and 1min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in May: 10h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

Average sunshine days in May
San Lorenzo, CA

Average sunshine days in May - San Lorenzo, CA
  • Average sunshine days in May: 24.3 days

The month with the most sunshine days is July (27.9 days).
The month with the least sunshine days is March (18.6 days).

Average UV index in May
San Lorenzo, CA

Average UV index in May - San Lorenzo, 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
San Lorenzo, CA

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

The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 7).

Average visibility in May
San Lorenzo, CA

Average visibility in May - San Lorenzo, 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).

San Lorenzo, California, USA

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