December weather forecastAlderglen Springs, CA
December
Weather in December
December, the first month of the winter in Alderglen Springs, is still a cool month, with an average temperature fluctuating between 38.5°F (3.6°C) and 54.9°F (12.7°C).Temperature
Alderglen Springs experiences its lowest average temperatures in December, reaching a peak of 54.9°F (12.7°C) and a minimum of 38.5°F (3.6°C).Humidity
The average relative humidity in December is 75%.Rainfall
In Alderglen Springs, in December, during 12.1 rainfall days, 3.66" (93mm) of precipitation is typically accumulated. In Alderglen Springs, during the entire year, the rain falls for 82.4 days and collects up to 20.75" (527mm) of precipitation.Snowfall
In Alderglen Springs, snow does not fall in January, March through December.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:12 am and sunset at 4:50 pm. On the last day of December, sunrise is at 7:30 am and sunset at 5:00 pm PST.
Sunshine
December has the least sunshine of the year, with an average of 5.4h of sunshine.UV index
The average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, a daily maximum UV index of 3 leads to the following instructions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Alderglen Springs, CA
- Average high temperature in December: 54.9°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is December (54.9°F).
- Average low temperature in December: 38.5°F
The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is December (38.5°F).
Average pressure in December
Alderglen Springs, CA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in December
Alderglen Springs, CA
- Average wind speed in December: 4.8mph
The windiest month (with the highest average wind speed) is May (6.3mph).
The calmest month (with the lowest average wind speed) is November (4.6mph).
Average humidity in December
Alderglen Springs, CA
- Average humidity in December: 75%
The month with the highest relative humidity is March (77%).
The months with the lowest relative humidity are July and September (57%).
Average rainfall in December
Alderglen Springs, CA
- Average rainfall in December: 3.66"
The wettest month (with the highest rainfall) is February (4.25").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Alderglen Springs, CA
- Average rainfall days in December: 12.1 days
The month with the highest number of rainy days is March (14.6 days).
The months with the least rainy days are July and August (1.2 days).
Average snowfall in December
Alderglen Springs, CA
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.16").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Alderglen Springs, CA
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Alderglen Springs, CA
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 24min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in December
Alderglen Springs, CA
- Average sunshine days in December: 18 days
The month with the most sunshine days is July (29.4 days).
The month with the least sunshine days is March (15.2 days).
Average UV index in December
Alderglen Springs, CA
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is November (UV index 2).
Average cloud cover in December
Alderglen Springs, CA
- Average cloud cover in December: 41
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 6).
Average visibility in December
Alderglen Springs, 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).
