December weather forecastNorthridge, CA
December
Weather in December
December, the first month of the winter in Northridge, is also an enjoyable month, with an average temperature fluctuating between 46.9°F (8.3°C) and 61.9°F (16.6°C).Temperature
In Northridge, the month of December is known for its lowest average temperatures, reaching a high of 61.9°F (16.6°C) and a low of 46.9°F (8.3°C).Humidity
In December, the average relative humidity in Northridge is 53%.Rainfall
In Northridge, during December, the rain falls for 4.7 days and regularly aggregates up to 1.18" (30mm) of precipitation. In Northridge, California, during the entire year, the rain falls for 42.7 days and collects up to 6.46" (164mm) of precipitation.Snowfall
The only month with snowfall is December. The month with the most snowfall days in Northridge is December, when snow falls for 0.1 days.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 4:44 pm. On the last day of December, in Northridge, California, sunrise is at 7:00 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 in Northridge.UV index
With an average maximum UV index of 3, December is the month with the lowest UV index in Northridge. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In December, a regular UV index of 3 translates into these guidelines:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Northridge, CA
- Average high temperature in December: 61.9°F
The warmest month (with the highest average high temperature) is August (85.6°F).
The month with the lowest average high temperature is December (61.9°F).
- Average low temperature in December: 46.9°F
The month with the highest average low temperature is August (64.8°F).
The coldest month (with the lowest average low temperature) is December (46.9°F).
Average pressure in December
Northridge, 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
Northridge, CA
- Average wind speed in December: 6.1mph
The windiest months (with the highest average wind speed) are January and December (6.1mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in December
Northridge, CA
- Average humidity in December: 53%
The month with the highest relative humidity is June (59%).
The month with the lowest relative humidity is November (47%).
Average rainfall in December
Northridge, CA
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is February (1.22").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in December
Northridge, CA
- Average rainfall days in December: 4.7 days
The month with the highest number of rainy days is March (6.5 days).
The month with the least rainy days is June (1.4 days).
Average snowfall days in December
Northridge, CA
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Northridge, 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
Northridge, CA
- Average sunshine days in December: 24.7 days
The months with the most sunshine days are August and October (27.3 days).
The month with the least sunshine days is February (22 days).
Average UV index in December
Northridge, 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
Northridge, 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
Northridge, 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).
