December weather forecastKelseyville, CA
December
Weather in December
The first month of the winter, December, is still a cool month in Kelseyville, California, with temperature in the range of an average high of 52.9°F (11.6°C) and an average low of 37.2°F (2.9°C).Temperature
With average high and low temperatures of 52.9°F (11.6°C) and 37.2°F (2.9°C) respectively, December is Kelseyville's coldest month.Humidity
In December, the average relative humidity is 73%.Rainfall
In December, the rain falls for 12.2 days. Throughout December, 3.62" (92mm) of precipitation is accumulated. Throughout the year, in Kelseyville, there are 88.1 rainfall days, and 20.28" (515mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Kelseyville, during December, snow falls for 0.2 days and regularly aggregates up to 0.08" (2mm) of snow. In Kelseyville, during the entire year, snow falls for 1.8 days and aggregates up to 1.26" (32mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of December in Kelseyville, sunrise is at 7:11 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:59 pm PST.
Sunshine
December has the least sunshine of the year, with an average of 5.3h of sunshine.UV index
The average daily maximum UV index in December is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: In December, a daily UV index of 3 turns into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Kelseyville, CA
- Average high temperature in December: 52.9°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is December (52.9°F).
- Average low temperature in December: 37.2°F
The months with the highest average low temperature are July and August (56.7°F).
The coldest month (with the lowest average low temperature) is December (37.2°F).
Average pressure in December
Kelseyville, CA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed in December
Kelseyville, CA
- Average wind speed in December: 4.5mph
The windiest months (with the highest average wind speed) are April and May (5.5mph).
The calmest month (with the lowest average wind speed) is November (4.2mph).
Average humidity in December
Kelseyville, CA
- Average humidity in December: 73%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (48%).
Average rainfall in December
Kelseyville, CA
- Average rainfall in December: 3.62"
The wettest month (with the highest rainfall) is February (3.94").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Kelseyville, CA
- Average rainfall days in December: 12.2 days
The month with the highest number of rainy days is March (15.2 days).
The month with the least rainy days is July (1.1 days).
Average snowfall in December
Kelseyville, CA
- Average snowfall in December: 0.08"
The months with the highest snowfall are January and February (0.47").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Kelseyville, CA
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Kelseyville, CA
- Average daylight in December: 9h and 30min
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 18min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in December
Kelseyville, CA
- Average sunshine days in December: 18 days
The month with the most sunshine days is July (29.7 days).
The month with the least sunshine days is March (14.3 days).
Average UV index in December
Kelseyville, CA
- Average UV index in December: 3
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is November (UV index 2).
Average cloud cover in December
Kelseyville, CA
- Average cloud cover in December: 42
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 5).
Average visibility in December
Kelseyville, CA
- Average visibility in December: 5mi
The months with the highest visibility are February, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, March and December (5mi).
