Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Lake Arrowhead's coldest weather arrives in December, when temperatures average a high of 53.4°F (11.9°C) and a low of 38.3°F (3.5°C).Humidity
February and December, with an average relative humidity of 52%, are the most humid months in Lake Arrowhead.Rainfall
In Lake Arrowhead, in December, it is raining for 5.5 days, with typically 0.98" (25mm) 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 are January through May, November and December. In Lake Arrowhead, in December, during 2.5 snowfall days, 2.09" (53mm) of snow is typically accumulated. Throughout the year, there are 15.6 snowfall days, and 18.35" (466mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 6:37 am and sunset at 4:38 pm. On the last day of December, sunrise is at 6:54 am and sunset at 4:49 pm PST.
Sunshine
December has the least sunshine of the year, with an average of 6.9h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: In December, the maximum UV index of 3 suggests this advice:
Guard yourself - An obligation to protect skin and eyes from harm exists. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
What is the usual temperature for Lake Arrowhead in December?
What is the most humid month?
What is the average humidity in December?
How much does it rain in Lake Arrowhead in December?
How many days does it snow in December?
What is the month with the shortest days in Lake Arrowhead?
How many hours of daylight does Lake Arrowhead have in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Lake Arrowhead have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Lake Arrowhead, CA
- Average high temperature in December: 53.4°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 December: 38.3°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 December
Lake Arrowhead, CA
- Average pressure in December: 30.07"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 December
Lake Arrowhead, CA
- Average wind speed in December: 5.9mph
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 December
Lake Arrowhead, CA
- Average humidity in December: 52%
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 December
Lake Arrowhead, CA
- Average rainfall in December: 0.98"
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 December
Lake Arrowhead, CA
- Average rainfall days in December: 5.5 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 December
Lake Arrowhead, CA
- Average snowfall in December: 2.09"
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 December
Lake Arrowhead, CA
- Average snowfall days in December: 2.5 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 December /
Average sunshine in December
Lake Arrowhead, CA
- Average daylight in December: 9h and 5min
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 December: 6h 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 December
Lake Arrowhead, CA
- Average sunshine days in December: 23.6 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 December
Lake Arrowhead, CA
- Average UV index in December: 3
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 December
Lake Arrowhead, CA
- Average cloud cover in December: 22
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 December
Lake Arrowhead, CA
- Average visibility in December: 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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