May weather forecast
O'Brien, CA

Weather in May

May, the last month of the spring in O'Brien, is an agreeable month, with an average temperature ranging between max 71.2°F (21.8°C) and min 46°F (7.8°C).

Temperature

In O'Brien, California, the average high-temperature in May slightly increases from a comfortable 62.4°F (16.9°C) in April to an agreeable 71.2°F (21.8°C). In O'Brien, the average low-temperature is 46°F (7.8°C).

Humidity

In O'Brien, the average relative humidity in May is 58%.

Rainfall

In O'Brien, California, during 10.3 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. Throughout the year, in O'Brien, there are 102.3 rainfall days, and 24.21" (615mm) of precipitation is accumulated.

Snowfall

In O'Brien, California, snow does not fall in April through October.

Daylight

In May, the average length of the day in O'Brien is 14h and 29min.
On the first day of the month, sunrise is at 6:07 am and sunset at 8:05 pm. On the last day of May, in O'Brien, California, sunrise is at 5:40 am and sunset at 8:33 pm PDT.

Sunshine

In O'Brien, the average sunshine in May is 11h.

UV index

The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. 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 O'Brien?

The average high-temperature, in May, in O'Brien, California, is 71.2°F (21.8°C), while the average low-temperature is 46°F (7.8°C).

What is the average humidity in May in O'Brien?

The average relative humidity in May is 58%.

How much does it rain in O'Brien in May?

In O'Brien, in May, during 10.3 rainfall days, 1.89" (48mm) of precipitation is typically accumulated.

When it does not snow in O'Brien?

April through October are months without snowfall in O'Brien, California.

How many hours of daylight does O'Brien have in May?

In O'Brien, California, the average day length in May is 14h and 29min.

What time are sunrise and sunset in May in O'Brien?

On the first day of May in O'Brien, California, sunrise is at 6:07 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 8:33 pm PDT.

How long on average sun shines in May in O'Brien?

In May, the average sunshine duration is 11h.

How high is the UV index in May in O'Brien?

The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
O'Brien, CA

Average temperature in May - O
  • Average high temperature in May: 71.2°F

The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is December (47.8°F).

  • Average low temperature in May: 46°F

The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is December (33.6°F).

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Average pressure in May
O'Brien, CA

Average pressure in May - O
  • Average pressure in May: 29.96"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).

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Average wind speed in May
O'Brien, CA

Average wind speed in May - O
  • Average wind speed in May: 5.1mph

The windiest months (with the highest average wind speed) are March and October (5.3mph).
The calmest months (with the lowest average wind speed) are August and November (4.5mph).

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Average humidity in May
O'Brien, CA

Average humidity in May - O
  • Average humidity in May: 58%

The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is August (37%).

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Average rainfall in May
O'Brien, CA

Average rainfall in May - O
  • Average rainfall in May: 1.89"

The wettest month (with the highest rainfall) is March (4.8").
The driest month (with the least rainfall) is July (0.12").

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Average rainfall days in May
O'Brien, CA

Average rainfall days in May - O
  • Average rainfall days in May: 10.3 days

The month with the highest number of rainy days is March (16.8 days).
The month with the least rainy days is August (1.7 days).

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Average snowfall in May
O'Brien, CA

Average snowfall in May - O
  • Average snowfall in May: 0"

The month with the highest snowfall is November (1.3").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in May
O'Brien, CA

Average snowfall days in May - O
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (1.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in May /
Average sunshine in May
O'Brien, CA

Average daylight in May / Average sunshine in May - O
  • Average daylight in May: 14h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in May: 11h and 0min

The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days in May
O'Brien, CA

Average sunshine days in May - O
  • Average sunshine days in May: 18.3 days

The month with the most sunshine days is August (27.1 days).
The month with the least sunshine days is March (11.8 days).

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Average UV index in May
O'Brien, CA

Average UV index in May - O
  • Average UV index in May: 5

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are February, November and December (UV index 2).

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Average cloud cover in May
O'Brien, CA

Average cloud cover in May - O
  • Average cloud cover in May: 23

The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in May
O'Brien, CA

Average visibility in May - O
  • Average visibility in May: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is December (5mi).

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