December weather forecastJunction City, CA
December
Weather in December
The first month of the winter, December, is also a frosty month in Junction City, California, with an average temperature fluctuating between 45°F (7.2°C) and 30°F (-1.1°C).Temperature
The coldest time of the year is December, with temperatures averaging a high of 45°F (7.2°C) and a low of 30°F (-1.1°C).Humidity
In December, the average relative humidity is 81%.Rainfall
The month with the most rainfall is December, when the rain falls for 14.5 days and typically aggregates up to 6.14" (156mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Junction City, during December, snow falls for 4.3 days and regularly aggregates up to 5.43" (138mm) of snow. Throughout the year, there are 21.6 snowfall days, and 28.46" (723mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:17 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:55 pm PST.
Sunshine
The month with the least sunshine is December, with an average of 4.6h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 2 in December translates into this advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Junction City, CA
- Average high temperature in December: 45°F
The warmest months (with the highest average high temperature) are July and August (84.6°F).
The month with the lowest average high temperature is December (45°F).
- Average low temperature in December: 30°F
The month with the highest average low temperature is July (51.3°F).
The coldest month (with the lowest average low temperature) is December (30°F).
Average pressure in December
Junction City, CA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is August (29.94"Hg).
Average wind speed in December
Junction City, CA
- Average wind speed in December: 4.2mph
The windiest months (with the highest average wind speed) are March and April (4.8mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).
Average humidity in December
Junction City, CA
- Average humidity in December: 81%
The month with the highest relative humidity is March (82%).
The month with the lowest relative humidity is August (54%).
Average rainfall in December
Junction City, CA
- Average rainfall in December: 6.14"
The wettest month (with the highest rainfall) is December (6.14").
The driest months (with the least rainfall) are July and August (0.16").
Average rainfall days in December
Junction City, CA
- Average rainfall days in December: 14.5 days
The month with the highest number of rainy days is March (18.3 days).
The month with the least rainy days is August (2.5 days).
Average snowfall in December
Junction City, CA
- Average snowfall in December: 5.43"
The month with the highest snowfall is February (8.35").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Junction City, CA
- Average snowfall days in December: 4.3 days
The month with the highest number of snowfall days is February (5.3 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
Junction City, CA
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 36min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).
Average sunshine days in December
Junction City, CA
- Average sunshine days in December: 13.3 days
The month with the most sunshine days is August (26.8 days).
The month with the least sunshine days is March (10.6 days).
Average UV index in December
Junction City, CA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Junction City, CA
- Average cloud cover in December: 52
The month with the most cloud cover is March (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility in December
Junction City, CA
- Average visibility in December: 4mi
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are March and December (4mi).
