May weather forecast
Lake Arrowhead, CA

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Weather in May

The last month of the spring, May, is a pleasant month in Lake Arrowhead, California, with an average temperature varying between 73°F (22.8°C) and 50.5°F (10.3°C).

Temperature

Lake Arrowhead in May experiences a slight uptick in the average high-temperature, adjusting from April's comfortable 66.9°F (19.4°C) to an agreeable 73°F (22.8°C). In stark contrast to the day's heat, the temperature in Lake Arrowhead dips to an average of 50.5°F (10.3°C) during May nights.

Humidity

In May, the average relative humidity is 47%.

Rainfall

In Lake Arrowhead, in May, it is raining for 4.3 days, with typically 0.31" (8mm) of accumulated precipitation. In Lake Arrowhead, during the entire year, the rain falls for 42.2 days and collects up to 5.55" (141mm) of precipitation.

Snowfall

Months with snowfall in Lake Arrowhead, California, are January through May, November and December. May is the last month it regularly snows in Lake Arrowhead. During 0.8 snowfall days, in May, Lake Arrowhead aggregates 0.31" (8mm) of snow. Throughout the year, there are 15.6 snowfall days, and 18.35" (466mm) of snow is accumulated.

Daylight

The average length of the day in May in Lake Arrowhead, California, is 13h and 58min.
On the first day of May, sunrise is at 5:58 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 7:55 pm PDT.

Sunshine

In May, the average sunshine in Lake Arrowhead is 11.8h.

UV index

In Lake Arrowhead, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the maximum UV index of 5 transforms into these recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.

Frequently asked questions

What is the average May temperature in Lake Arrowhead?

May temperatures in Lake Arrowhead vary between a high-temperature of 73°F (22.8°C) and a low-temperature of 50.5°F (10.3°C).

What is the average humidity in May in Lake Arrowhead?

In Lake Arrowhead, the average relative humidity in May is 47%.

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

In Lake Arrowhead, California, in May, it is raining for 4.3 days, with typically 0.31" (8mm) of accumulated precipitation.

What is the last month it snows in Lake Arrowhead?

May is the last month it regularly snows in Lake Arrowhead. During 0.8 snowfall days, in May, Lake Arrowhead aggregates 0.31" (8mm) of snow.

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

In Lake Arrowhead, the average day length in May is 13h and 58min.

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

On the first day of May, sunrise is at 5:58 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 7:55 pm PDT.

How many hours of sunshine does Lake Arrowhead have in May?

In Lake Arrowhead, California, the average sunshine duration in May is 11.8h.

What is the UV index reading in May in Lake Arrowhead?

The average daily maximum UV index in May in Lake Arrowhead, California, is 5. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Lake Arrowhead, CA

Average temperature in May - Lake Arrowhead, CA
  • Average high temperature in May: 73°F

The warmest months (with the highest average high temperature) are July and August (88.3°F).
The month with the lowest average high temperature is December (53.4°F).

  • Average low temperature in May: 50.5°F

The month with the highest average low temperature is August (66.4°F).
The coldest month (with the lowest average low temperature) is December (38.3°F).

Average pressure in May
Lake Arrowhead, CA

Average pressure in May - Lake Arrowhead, CA
  • Average pressure in May: 29.88"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

Average wind speed in May
Lake Arrowhead, CA

Average wind speed in May - Lake Arrowhead, CA
  • Average wind speed in May: 7.2mph

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is September (5.3mph).

Average humidity in May
Lake Arrowhead, CA

Average humidity in May - Lake Arrowhead, CA
  • Average humidity in May: 47%

The months with the highest relative humidity are February and December (52%).
The month with the lowest relative humidity is August (32%).

Average rainfall in May
Lake Arrowhead, CA

Average rainfall in May - Lake Arrowhead, CA
  • Average rainfall in May: 0.31"

The wettest month (with the highest rainfall) is February (1.1").
The driest month (with the least rainfall) is June (0.08").

Average rainfall days in May
Lake Arrowhead, CA

Average rainfall days in May - Lake Arrowhead, CA
  • Average rainfall days in May: 4.3 days

The month with the highest number of rainy days is March (5.7 days).
The month with the least rainy days is June (1.2 days).

Average snowfall in May
Lake Arrowhead, CA

Average snowfall in May - Lake Arrowhead, CA
  • Average snowfall in May: 0.31"

The month with the highest snowfall is April (4.09").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in May
Lake Arrowhead, CA

Average snowfall days in May - Lake Arrowhead, CA
  • Average snowfall days in May: 0.8 days

The month with the highest number of snowfall days is February (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
Lake Arrowhead, CA

Average daylight in May / Average sunshine in May - Lake Arrowhead, CA
  • Average daylight in May: 14h and 0min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in May: 11h and 5min

The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).

Average sunshine days in May
Lake Arrowhead, CA

Average sunshine days in May - Lake Arrowhead, CA
  • Average sunshine days in May: 25 days

The month with the most sunshine days is June (27.9 days).
The month with the least sunshine days is February (21.8 days).

Average UV index in May
Lake Arrowhead, CA

Average UV index in May - Lake Arrowhead, 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 January, February, November and December (UV index 3).

Average cloud cover in May
Lake Arrowhead, CA

Average cloud cover in May - Lake Arrowhead, CA
  • Average cloud cover in May: 11

The month with the most cloud cover is December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).

Average visibility in May
Lake Arrowhead, CA

Average visibility in May - Lake Arrowhead, 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).

Lake Arrowhead, California, USA

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