December weather forecastSan Fernando, CA
December
Weather in December
December, the first month of the winter in San Fernando, is still a refreshing month, with an average temperature ranging between min 46.2°F (7.9°C) and max 61.7°F (16.5°C).Temperature
With average temperatures fluctuating between a high of 61.7°F (16.5°C) and a low of 46.2°F (7.9°C), December stands out as the coldest month.Humidity
In San Fernando, the average relative humidity in December is 52%.Rainfall
In San Fernando, in December, it is raining for 5 days, with typically 1.42" (36mm) of accumulated precipitation. Throughout the year, there are 39.8 rainfall days, and 7.52" (191mm) of precipitation is accumulated.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:42 am and sunset at 4:43 pm. On the last day of December, sunrise is at 6:59 am and sunset at 4:54 pm PST.
Sunshine
January, February and December, with an average of 6.8h of sunshine, are months with the least sunshine.UV index
December is the month with the lowest UV index, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In December, a daily maximum UV index of 3 leads to the following instructions:
Heed the precautions - Suggestions to avoid sunburn are made. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
San Fernando, CA
- Average high temperature in December: 61.7°F
The warmest month (with the highest average high temperature) is August (85.8°F).
The month with the lowest average high temperature is December (61.7°F).
- Average low temperature in December: 46.2°F
The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is December (46.2°F).
Average pressure in December
San Fernando, CA
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
San Fernando, CA
- Average wind speed in December: 6.2mph
The windiest months (with the highest average wind speed) are January and December (6.2mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in December
San Fernando, CA
- Average humidity in December: 52%
The month with the highest relative humidity is June (58%).
The month with the lowest relative humidity is November (47%).
Average rainfall in December
San Fernando, CA
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is February (1.54").
The driest month (with the least rainfall) is June (0").
Average rainfall days in December
San Fernando, CA
- Average rainfall days in December: 5 days
The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (0.8 days).
Average daylight in December /
Average sunshine in December
San Fernando, CA
- Average daylight in December: 9h and 54min
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 48min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).
Average sunshine days in December
San Fernando, CA
- Average sunshine days in December: 25.2 days
The month with the most sunshine days is May (28.8 days).
The month with the least sunshine days is February (22.9 days).
Average UV index in December
San Fernando, CA
- Average UV index in December: 3
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
San Fernando, CA
- Average cloud cover in December: 21
The month with the most cloud cover is March (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 4).
Average visibility in December
San Fernando, 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).
