May weather forecast
Hat Creek, CA

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Weather in May

The last month of the spring, May, is an enjoyable month in Hat Creek, California, with temperature in the range of an average high of 66.9°F (19.4°C) and an average low of 40.6°F (4.8°C).

Temperature

The onset of May marks an increase in the average high-temperature, moving from a moderate 57.7°F (14.3°C) in April to a comfortable 66.9°F (19.4°C). A considerable shift from the daytime highs is observed during May nights, with an average low of 40.6°F (4.8°C).

Humidity

The average relative humidity in May is 60%.

Rainfall

In May, in Hat Creek, the rain falls for 11.5 days. Throughout May, 2.2" (56mm) of precipitation is accumulated. In Hat Creek, during the entire year, the rain falls for 105 days and collects up to 24.69" (627mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.4 snowfall days, in May, Hat Creek aggregates 0.2" (5mm) of snow. In Hat Creek, during the entire year, snow falls for 36.7 days and aggregates up to 43.62" (1108mm) of snow.

Daylight

In May, the average length of the day is 14h and 30min.
On the first day of May, sunrise is at 6:03 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 8:31 pm PDT.

Sunshine

The average sunshine in May is 11.1h.

UV index

In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: In May, a regular UV index of 4 translates into these guidelines:
Undertake protective steps - Preventing sun damage is advised. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Updated: Jul 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May?

The high-temperature during May is 66.9°F (19.4°C) and the low-temperature is 40.6°F (4.8°C).

What is the average humidity in May?

In May, the average relative humidity is 60%.

How many days does it rain in May?

In Hat Creek, in May, it is raining for 11.5 days, with typically 2.2" (56mm) of accumulated precipitation.

What is the last month it snows?

May is the last month it regularly snows. 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 May, the average day length is 14h and 30min.

When are sunrise and sunset in May?

On the first day of May, sunrise is at 6:03 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 8:31 pm PDT.

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

The average sunshine duration in May is 11.1h.

What is the UV index reading in May?

In Hat Creek, the average daily maximum UV index in May is 4. 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 snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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).

Average pressure in May
Hat Creek, CA

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

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

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).

Average humidity in May
Hat Creek, CA

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

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

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").

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).

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").
The months with the least snowfall are June, July, August and September (0").

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).
The months with the least snowfall days are June, July and August (0 days).

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: 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 1min

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 42min).

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).

Average UV index in May
Hat Creek, CA

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

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

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).
The months with the least cloud cover are July and August (Cloud cover 6).

Average visibility in May
Hat Creek, CA

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

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

Hat Creek, California, USA

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