May weather forecast
Alta Sierra, CA

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Weather in May

May, the last month of the spring in Alta Sierra, is a pleasant month, with an average temperature fluctuating between 71.2°F (21.8°C) and 48.4°F (9.1°C).

Temperature

The arrival of May witnesses a small shift in the average high-temperature, moving from a comfortable 63.1°F (17.3°C) in April to an agreeable 71.2°F (21.8°C). A dramatic downturn marks the May nights, with lows averaging at a chilly 48.4°F (9.1°C).

Humidity

In May, the average relative humidity in Alta Sierra is 60%.

Rainfall

In Alta Sierra, in May, it is raining for 6.5 days, with typically 1.73" (44mm) of accumulated precipitation. Throughout the year, in Alta Sierra, there are 82 rainfall days, and 33.11" (841mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, November and December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Alta Sierra aggregates 0.08" (2mm) of snow. In Alta Sierra, during the entire year, snow falls for 6.8 days and aggregates up to 14.41" (366mm) of snow.

Daylight

In May, the average length of the day in Alta Sierra is 14h and 20min.
On the first day of the month, sunrise is at 6:04 am and sunset at 7:57 pm. On the last day of May, sunrise is at 5:39 am and sunset at 8:24 pm PDT.

Sunshine

In May, the average sunshine in Alta Sierra is 10.8h.

UV index

In Alta Sierra, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum high UV index of 5 in May translates into the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Updated: Jul 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Alta Sierra in May?

Alta Sierra in May has an average high-temperature of 71.2°F (21.8°C) and an average low-temperature of 48.4°F (9.1°C).

What is the average humidity in May?

In Alta Sierra, the average relative humidity in May is 60%.

How many days does it rain in May?

In May, the rain falls for 6.5 days. Throughout May, 1.73" (44mm) of precipitation is accumulated.

What is the last month it snows?

May is the last month it regularly snows. During 0.1 snowfall days, in May, Alta Sierra aggregates 0.08" (2mm) of snow.

What is the average length of the day in May?

In Alta Sierra, the average day length in May is 14h and 20min.

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 6:04 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 8:24 pm PDT.

How long on average sun shines in May?

In May, the average sunshine duration is 10.8h.

What is the UV index intensity in May in Alta Sierra?

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
Alta Sierra, CA

Average temperature in May - Alta Sierra, CA
  • Average high temperature in May: 71.2°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is December (51.3°F).

  • Average low temperature in May: 48.4°F

The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is December (37.2°F).

Average pressure in May
Alta Sierra, CA

Average pressure in May - Alta Sierra, CA
  • Average pressure in May: 29.95"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in May
Alta Sierra, CA

Average wind speed in May - Alta Sierra, CA
  • Average wind speed in May: 5.5mph

The windiest month (with the highest average wind speed) is February (6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in May
Alta Sierra, CA

Average humidity in May - Alta Sierra, CA
  • Average humidity in May: 60%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (37%).

Average rainfall in May
Alta Sierra, CA

Average rainfall in May - Alta Sierra, CA
  • Average rainfall in May: 1.73"

The wettest month (with the highest rainfall) is March (6.57").
The driest months (with the least rainfall) are July and August (0.04").

Average rainfall days in May
Alta Sierra, CA

Average rainfall days in May - Alta Sierra, CA
  • Average rainfall days in May: 6.5 days

The month with the highest number of rainy days is March (15.1 days).
The month with the least rainy days is July (1.1 days).

Average snowfall in May
Alta Sierra, CA

Average snowfall in May - Alta Sierra, CA
  • Average snowfall in May: 0.08"

The month with the highest snowfall is February (6.42").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in May
Alta Sierra, CA

Average snowfall days in May - Alta Sierra, CA
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is March (2.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in May /
Average sunshine in May
Alta Sierra, CA

Average daylight in May / Average sunshine in May - Alta Sierra, CA
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in May: 10h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).

Average sunshine days in May
Alta Sierra, CA

Average sunshine days in May - Alta Sierra, CA
  • Average sunshine days in May: 23.3 days

The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (14.8 days).

Average UV index in May
Alta Sierra, CA

Average UV index in May - Alta Sierra, CA
  • Average UV index in May: 5

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is November (UV index 2).

Average cloud cover in May
Alta Sierra, CA

Average cloud cover in May - Alta Sierra, CA
  • Average cloud cover in May: 22

The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 4).

Average visibility in May
Alta Sierra, CA

Average visibility in May - Alta Sierra, 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).

Alta Sierra, California, USA

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