May weather forecast
Shasta Lake, CA

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Weather in May

May, the last month of the spring in Shasta Lake, is an agreeable month, with an average temperature ranging between min 47.7°F (8.7°C) and max 72.3°F (22.4°C).

Temperature

May's onset witnesses a shift in the average high-temperature, moving from a refreshing 63.3°F (17.4°C) in April to a pleasant 72.3°F (22.4°C). Shasta Lake, in May, displays a significant temperature downturn during the night, with an average reading of 47.7°F (8.7°C).

Humidity

In May, the average relative humidity in Shasta Lake is 57%.

Rainfall

In Shasta Lake, in May, it is raining for 8.8 days, with typically 1.89" (48mm) of accumulated precipitation. In Shasta Lake, during the entire year, the rain falls for 99.5 days and collects up to 30.43" (773mm) of precipitation.

Snowfall

April through October are months without snowfall in Shasta Lake.

Daylight

The average length of the day in May is 14h and 28min.
On the first day of the month, sunrise is at 6:06 am and sunset at 8:06 pm. On the last day of May, sunrise is at 5:40 am and sunset at 8:34 pm PDT.

Sunshine

In May, the average sunshine in Shasta Lake, California, is 11.1h.

UV index

The average daily maximum UV index in May in Shasta Lake is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 5 in May interprets into the following recommendations:
Take precautions - Protection against sun damage is advised. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Stay sun-safe with clothing that is both closely woven and worn loosely.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures in Shasta Lake?

In Shasta Lake, 72.3°F (22.4°C) is the average high-temperature and 47.7°F (8.7°C) is the average low-temperature during May.

What is the average humidity in May in Shasta Lake?

In Shasta Lake, California, the average relative humidity in May is 57%.

How many days does it rain in May in Shasta Lake?

In Shasta Lake, California, during May, the rain falls for 8.8 days and regularly aggregates up to 1.89" (48mm) of precipitation.

When it does not snow in Shasta Lake?

April through October are months without snowfall in Shasta Lake.

How many hours of daylight does Shasta Lake have in May?

In Shasta Lake, California, the average day length in May is 14h and 28min.

When is the sunrise / sunset in May in Shasta Lake?

On the first day of May, sunrise is at 6:06 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 8:34 pm PDT.

How long on average sun shines in May in Shasta Lake?

The average sunshine duration in May in Shasta Lake is 11.1h.

How high is the UV index in May in Shasta Lake?

In Shasta Lake, California, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to 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
Shasta Lake, CA

Average temperature in May - Shasta Lake, CA
  • Average high temperature in May: 72.3°F

The warmest month (with the highest average high temperature) is July (92.3°F).
The month with the lowest average high temperature is December (49.3°F).

  • Average low temperature in May: 47.7°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is December (35.2°F).

Average pressure in May
Shasta Lake, CA

Average pressure in May - Shasta Lake, CA
  • Average pressure in May: 29.96"Hg

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

Average wind speed in May
Shasta Lake, CA

Average wind speed in May - Shasta Lake, CA
  • Average wind speed in May: 5mph

The windiest months (with the highest average wind speed) are March, April, June and October (5.2mph).
The calmest months (with the lowest average wind speed) are August and November (4.4mph).

Average humidity in May
Shasta Lake, CA

Average humidity in May - Shasta Lake, CA
  • Average humidity in May: 57%

The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is August (35%).

Average rainfall in May
Shasta Lake, CA

Average rainfall in May - Shasta Lake, CA
  • Average rainfall in May: 1.89"

The wettest month (with the highest rainfall) is March (5.91").
The driest month (with the least rainfall) is July (0.08").

Average rainfall days in May
Shasta Lake, CA

Average rainfall days in May - Shasta Lake, CA
  • Average rainfall days in May: 8.8 days

The month with the highest number of rainy days is March (16.8 days).
The month with the least rainy days is August (1.6 days).

Average snowfall in May
Shasta Lake, CA

Average snowfall in May - Shasta Lake, CA
  • Average snowfall in May: 0"

The month with the highest snowfall is December (0.63").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in May
Shasta Lake, CA

Average snowfall days in May - Shasta Lake, CA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in May /
Average sunshine in May
Shasta Lake, CA

Average daylight in May / Average sunshine in May - Shasta Lake, CA
  • Average daylight in May: 14h and 3min

The month with the longest days is June (Average daylight: 15h and 0min).
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 12min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

Average sunshine days in May
Shasta Lake, CA

Average sunshine days in May - Shasta Lake, CA
  • Average sunshine days in May: 20.8 days

The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is March (12.7 days).

Average UV index in May
Shasta Lake, CA

Average UV index in May - Shasta Lake, CA
  • 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).

Average cloud cover in May
Shasta Lake, CA

Average cloud cover in May - Shasta Lake, CA
  • Average cloud cover in May: 21

The month with the most cloud cover is March (Cloud cover 43).
The months with the least cloud cover are July and August (Cloud cover 5).

Average visibility in May
Shasta Lake, CA

Average visibility in May - Shasta Lake, 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).

Shasta Lake, California, USA

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