Measurements:
°C
°F
Boulder
30°F
E 9 mph
Feels like: 20°F
Precip: 0%
World Resorts USA Boulder Weather December Weather in Boulder

Boulder Weather: December

Average Day Temperature: 35.6°F
Average Night Temperature: 21.6°F
Number of Sunny Days: 17 days
Sunshine Hours: 9.3 - 9.5 hours
Number of Rainy Days: 0 days
Precipitation Totals: 0.4 in

Air Temperature in December, °F

Select Year: 2024 2023 2022

The highest day temperature in December 2024 was 59°F. The lowest night temperature was 16°F. The average values for day and night temperatures during December were 45.9°F и 31.4°F respectivly.

Sunny, Cloudy and Gloomy days

Most of the days in December are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in December, in

Precipitation total in December for Boulder is 0.4 in. It makes december the least rainy month of the year.

Wind Speed in December, mph

The average wind speed in December is 8.7 mph. This value is relatively stable throughout the year.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Boulder in December is 6.5 hours.

Best Time to Visit Boulder
The most sunny months:
October 20 days
September 20 days
November 19 days
The most warm months:
July 78.6 °F
August 77.3 °F
June 71.9 °F
The most cold months:
January 27.8 °F
February 30.0 °F
December 35.6 °F
The most rainy months:
June 6 days
July 4 days
May 4 days
The most windy months:
December 9 mph
February 8 mph
January 8 mph

Boulder on the Weather Map

USA Resorts:
NAME
Chicago -2
Hawaii +78
Honolulu +78
Houston +44
Las Vegas +38
Los Angeles +50
Maui +70
Miami +68
Miami Beach +80
New York +16
San Diego +52
San Francisco +46
Sarasota +64
Tampa +62
Washington +26
24 Hours Weather Forecast
Boulder
Local time: 02:45
05 dec, friday
0300 30°F
E
9 mph
0600 30°F
E
12 mph
0900 30°F
E
11 mph
1200 38°F
SW
4 mph
1500 40°F
SW
6 mph
1800 34°F
NE
6 mph
2100 32°F
E
5 mph
06 dec, saturday
0000 30°F
NE
6 mph