May weather forecast and climate
Hat Creek, CA

Weather in May

May, the last month of the spring, in Hat Creek, is a comfortable month, with average temperature varying between 66.9°F (19.4°C) and 40.6°F (4.8°C).

Temperature

In Hat Creek, the average high-temperature in May rises, from a moderate 57.7°F (14.3°C) in April, to a comfortable 66.9°F (19.4°C). The average low-temperature, in Hat Creek, California, is 40.6°F (4.8°C).

Humidity

In May, the average relative humidity is 60%.

Rainfall

In Hat Creek, in May, during 11.5 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. Throughout the year, there are 105 rainfall days, and 24.69" (627mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Hat Creek, California. May is the last month it regularly snows in Hat Creek. During 0.4 snowfall days, Hat Creek aggregates 0.2" (5mm) of snow. Throughout the year, in Hat Creek, there are 36.7 snowfall days, and 43.62" (1108mm) of snow is accumulated.

Daylight

The average length of the day in May is 14.5h.

Sunshine

The average sunshine in Hat Creek is 11.1h.

UV index

In Hat Creek, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 4 in May interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in May in Hat Creek?

The average high-temperature, in May, is 66.9°F (19.4°C), while the average low-temperature is 40.6°F (4.8°C).

What is the average humidity in May in Hat Creek?

In May, the average relative humidity is 60%.

How many days does it rain in May in Hat Creek?

In Hat Creek, in May, during 11.5 rainfall days, 2.2" (56mm) of precipitation is typically accumulated.

What is the last month it snows in Hat Creek?

May is the last month it regularly snows in Hat Creek. During 0.4 snowfall days, in May, Hat Creek aggregates 0.2" (5mm) of snow.

How many hours of daylight does Hat Creek have in May?

In Hat Creek, California, the average length of the day in May is 14.5h.

How many hours of sunshine does Hat Creek have in May?

In Hat Creek, the average sunshine in May is 11.1h.

How high is the UV index in May in Hat Creek?

In May, the average daily maximum UV index in Hat Creek, California, is 4. A UV Index of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV rays.

Average temperature in May
Hat Creek, CA

Average temperature in May - Hat Creek, CA
  • Average high temperature in May: 66.9°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is December (43.3°F).

  • Average low temperature in May: 40.6°F

The month with the highest average low temperature is July (53.1°F).
The coldest month (with the lowest average low temperature) is December (27.9°F).

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Average pressure in May
Hat Creek, CA

Average pressure in May - Hat Creek, CA
  • Average pressure in May: 29.95"

The month with the highest atmospheric pressure is January (30.18").
Months with the lowest atmospheric pressure are June and August (29.92").

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Average wind speed in May
Hat Creek, CA

Average wind speed in May - Hat Creek, CA
  • Average wind speed in May: 5.4mph

The windiest month (with the highest average wind speed) is March (5.8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

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Average humidity in May
Hat Creek, CA

Average humidity in May - Hat Creek, CA
  • Average humidity in May: 60%

Months with the highest relative humidity are January and March (79%).
Months with the lowest relative humidity are July and August (40%).

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Average rainfall in May
Hat Creek, CA

Average rainfall in May - Hat Creek, CA
  • Average rainfall in May: 2.2"

The wettest month (with the highest rainfall) is March (4.45").
The driest month (with the least rainfall) is July (0.16").

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Average rainfall days in May
Hat Creek, CA

Average rainfall days in May - Hat Creek, CA
  • Average rainfall days in May: 11.5 days

The month with the highest number of rainy days is April (14.5 days).
The month with the least rainy days is August (2.3 days).

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Average snowfall in May
Hat Creek, CA

Average snowfall in May - Hat Creek, CA
  • Average snowfall in May: 0.2"

The month with the highest snowfall is March (10.43").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Hat Creek, CA

Average snowfall days in May - Hat Creek, CA
  • Average snowfall days in May: 0.4 days

The month with the highest number of snowfall days is March (8 days).
Months with the least snowfall days are June, July and August (0 days).

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Average daylight in May /
Average sunshine in May
Hat Creek, CA

Average daylight in May / Average sunshine in May - Hat Creek, CA
  • Average daylight in May: 14.5h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in May: 11.1h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.7h).

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Average sunshine days in May
Hat Creek, CA

Average sunshine days in May - Hat Creek, CA
  • Average sunshine days in May: 16.8 days

The month with the most sunshine days is August (26 days).
The month with the least sunshine days is March (11.3 days).

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Average UV index in May
Hat Creek, CA

Average UV index in May - Hat Creek, CA
  • Average UV index in May: 4

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in May
Hat Creek, CA

Average cloud cover in May - Hat Creek, CA
  • Average cloud cover in May: 24

The month with the most cloud cover is March (Cloud cover 42).
Months with the least cloud cover are July and August (Cloud cover 6).

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Average visibility in May
Hat Creek, CA

Average visibility in May - Hat Creek, CA
  • Average visibility in May: 6mi

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

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