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
December, recording an average high temperature of 49.1°F (9.5°C) and a low temperature of 34.2°F (1.2°C), is Foresthill's coldest month.Humidity
In December, the average relative humidity is 69%.Rainfall
In December, in Foresthill, the rain falls for 11 days. Throughout December, 5.59" (142mm) of precipitation is accumulated. In Foresthill, California, during the entire year, the rain falls for 85.5 days and collects up to 35.94" (913mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. In Foresthill, California, during December, snow falls for 3.9 days and regularly aggregates up to 4.96" (126mm) of snow. Throughout the year, there are 22.8 snowfall days, and 56.06" (1424mm) of snow is accumulated.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:03 am and sunset at 4:41 pm. On the last day of December, in Foresthill, sunrise is at 7:22 am and sunset at 4:51 pm PST.
Sunshine
The average sunshine in December is 5.8h.UV index
February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Foresthill, California. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What part of the year is the coldest in Foresthill?
What is the average December temperature in Foresthill?
What is the average humidity in December in Foresthill?
How much does it rain in Foresthill in December?
How much does it snow in Foresthill in December?
What is the month with the shortest days in Foresthill?
How many hours of daylight does Foresthill have in December?
When are sunrise and sunset in December in Foresthill?
How long on average sun shines in December in Foresthill?
What are the months with the lowest UV index in Foresthill?
How high is the UV index in December in Foresthill?
Average temperature in December
Foresthill, CA
- Average high temperature in December: 49.1°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is December (49.1°F).
- Average low temperature in December: 34.2°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is December (34.2°F).
Average pressure in December
Foresthill, CA
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Foresthill, CA
- Average wind speed in December: 5.3mph
The windiest month (with the highest average wind speed) is February (6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Foresthill, CA
- Average humidity in December: 69%
The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is July (38%).
Average rainfall in December
Foresthill, CA
- Average rainfall in December: 5.59"
The wettest month (with the highest rainfall) is March (7.01").
The driest month (with the least rainfall) is July (0.04").
Average rainfall days in December
Foresthill, CA
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is March (13.9 days).
The month with the least rainy days is July (1.4 days).
Average snowfall in December
Foresthill, CA
- Average snowfall in December: 4.96"
The month with the highest snowfall is March (17.87").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Foresthill, CA
- Average snowfall days in December: 3.9 days
The month with the highest number of snowfall days is March (5.4 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
Foresthill, CA
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
Average sunshine days in December
Foresthill, CA
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is July (28.4 days).
The month with the least sunshine days is March (13.5 days).
Average UV index in December
Foresthill, CA
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are February, November and December (UV index 2).
Average cloud cover in December
Foresthill, CA
- Average cloud cover in December: 35
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 5).
Average visibility in December
Foresthill, 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).
Foresthill, California, USA
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