December weather forecastFoothill Farms, CA
December
Weather in December
The first month of the winter, December, is still a cool month in Foothill Farms, California, with an average temperature fluctuating between 54.1°F (12.3°C) and 41.2°F (5.1°C).Temperature
December is the month when Foothill Farms experiences its coldest temperatures, averaging a high of 54.1°F (12.3°C) and a low of 41.2°F (5.1°C).Humidity
The average relative humidity in December in Foothill Farms, California, is 71%.Rainfall
In Foothill Farms, during December, the rain falls for 10.6 days and regularly aggregates up to 2.72" (69mm) of precipitation. In Foothill Farms, during the entire year, the rain falls for 75.8 days and collects up to 16.65" (423mm) of precipitation.Snowfall
The only month with snowfall is December. December has the most snowfall days of the year in Foothill Farms. Snow falls for 0.1 days.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:05 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:54 pm PST.
Sunshine
December has the least sunshine of the year in Foothill Farms, with an average of 5.7h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Foothill Farms. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: In December, the maximum UV index of 3 translates into these guidelines:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Foothill Farms, CA
- Average high temperature in December: 54.1°F
The warmest month (with the highest average high temperature) is July (94.6°F).
The month with the lowest average high temperature is December (54.1°F).
- Average low temperature in December: 41.2°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (41°F).
Average pressure in December
Foothill Farms, CA
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Foothill Farms, CA
- Average wind speed in December: 5.3mph
The windiest month (with the highest average wind speed) is February (5.9mph).
The calmest month (with the lowest average wind speed) is September (4.3mph).
Average humidity in December
Foothill Farms, CA
- Average humidity in December: 71%
The month with the highest relative humidity is March (75%).
The months with the lowest relative humidity are July and September (43%).
Average rainfall in December
Foothill Farms, CA
- Average rainfall in December: 2.72"
The wettest month (with the highest rainfall) is March (3.11").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Foothill Farms, CA
- Average rainfall days in December: 10.6 days
The month with the highest number of rainy days is March (13.4 days).
The month with the least rainy days is August (0.8 days).
Average snowfall days in December
Foothill Farms, 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
Foothill Farms, 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 42min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in December
Foothill Farms, CA
- Average sunshine days in December: 19.6 days
The month with the most sunshine days is August (30 days).
The month with the least sunshine days is March (16.3 days).
Average UV index in December
Foothill Farms, CA
- Average UV index in December: 3
The months with the highest UV index are June and 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
Foothill Farms, CA
- Average cloud cover in December: 36
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in December
Foothill Farms, 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).
