Weather in Ottawa: December
 |
Average day temperature: | 36.9°F |
| Average night temperature: | 29.4°F | |
 |
Number of sunny days: | 9 days |
| Day length: | 9.2 - 9.4 hours | |
 |
Number of rainy days: | 2 days |
| Precipitation totals: | 0.6 in. | |
| more information | ||
14 days
forecast
forecast
| Ottawa |
weather in
January
January
| Ottawa |
Air temperature in December, °F
Show year:
2025
2024
2023
The highest day temperature during December of 2025 was 51°F. At the same time the lowest night temperature was -1°F. Daily and nightly averages during December were 31.8°F and 23.2°F.
Sunny, partly cloudy and cloudy days
Mostly all days in December are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in December, in.
Precipitation total value in Ottawa in December is 0.6 in. Other months of the year show relatively similar values.
Wind speed in December, mph
The average wind speed value in December is 9.6 mph
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in December is: 4.1.
Best time for vacation in Ottawa
Ottawa on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Ottawa
Local time: 10:41
December 27, saturday
1200
43°F
NW
11 mph
11 mph
1500
46°F
NW
11 mph
11 mph
1800
43°F
NW
12 mph
12 mph
2100
41°F
NW
11 mph
11 mph
December 28, sunday
0000
41°F
NW
11 mph
11 mph
0300
43°F
N
10 mph
10 mph
0600
45°F
N
4 mph
4 mph
0900
45°F
NE
9 mph
9 mph
