Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
May sees a marginal temperature increase, moving from an enjoyable 66.9°F (19.4°C) in April to an agreeable 73°F (22.8°C). The nighttime average for Lake Arrowhead in May plummets considerably from its daytime counterpart, resting at a cool 50.5°F (10.3°C).Humidity
In May, the average relative humidity is 47%.Rainfall
In Lake Arrowhead, in May, during 4.3 rainfall days, 0.31" (8mm) of precipitation is typically accumulated. Throughout the year, in Lake Arrowhead, there are 42.2 rainfall days, and 5.55" (141mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. May is the last month it regularly snows. During 0.8 snowfall days, in May, Lake Arrowhead aggregates 0.31" (8mm) of snow. In Lake Arrowhead, during the entire year, snow falls for 15.6 days and aggregates up to 18.35" (466mm) of snow.Daylight
In Lake Arrowhead, the average length of the day in May 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
The average sunshine in May is 11.8h.UV index
The average daily maximum UV index in May in Lake Arrowhead is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The UV index of 5 during May translates into the following guidance:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the average humidity in May?
How many days does it rain in May?
What is the last month it snows?
What is the average length of the day in May?
What time are sunrise and sunset in May?
How long on average sun shines in May?
What is the UV index reading in May?
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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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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