December weather forecastColusa, CA
December
Weather in December
The first month of the winter, December, is still a cool month in Colusa, California, with an average temperature varying between 54.5°F (12.5°C) and 42.1°F (5.6°C).Temperature
December, having an average high-temperature of 54.5°F (12.5°C) and an average low-temperature of 42.1°F (5.6°C), is the coldest month.Humidity
The average relative humidity in December is 67%.Rainfall
The months with the most rainfall are February and December, with an average 1.3" (33mm) of precipitation.Snowfall
In Colusa, snow does not fall in February through December.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 7:09 am and sunset at 4:45 pm. On the last day of December, sunrise is at 7:27 am and sunset at 4:55 pm PST.
Sunshine
The month with the least sunshine is December, with an average of 5.8h of sunshine.UV index
February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 3 during December translates into the following directions:
Heed the precautions - It is counselled to guard against solar damage. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Colusa, CA
- Average high temperature in December: 54.5°F
The warmest month (with the highest average high temperature) is July (98.8°F).
The month with the lowest average high temperature is December (54.5°F).
- Average low temperature in December: 42.1°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is December (42.1°F).
Average pressure in December
Colusa, 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 June (29.9"Hg).
Average wind speed in December
Colusa, CA
- Average wind speed in December: 5.9mph
The windiest month (with the highest average wind speed) is March (6.6mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Colusa, CA
- Average humidity in December: 67%
The month with the highest relative humidity is March (71%).
The month with the lowest relative humidity is September (36%).
Average rainfall in December
Colusa, CA
- Average rainfall in December: 1.3"
The wettest months (with the highest rainfall) are February and December (1.3").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Colusa, CA
- Average rainfall days in December: 7.6 days
The month with the highest number of rainy days is March (10.4 days).
The month with the least rainy days is July (1 days).
Average snowfall in December
Colusa, CA
- Average snowfall in December: 0"
The month with the highest snowfall is January (0.1").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average daylight in December /
Average sunshine in December
Colusa, 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 48min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in December
Colusa, CA
- Average sunshine days in December: 22.5 days
The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (19.7 days).
Average UV index in December
Colusa, CA
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in December
Colusa, CA
- Average cloud cover in December: 36
The months with the most cloud cover are March and December (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in December
Colusa, 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).
