Ottawa - Recent December Temperatures, Rain & Snow

The numbers here describe what the December weather in Ottawa, Ontario Canada was like for every year since 2010. A series of tables gives December data by year for temperature, precipitation and snowfall.

They begin with average maximum and minimum temperatures in degrees Fahrenheit and Celsius. That's followed by how many hot or cold days occurred each December. Then there's information on how much rain and snow actually landed this month during recent years, as well as how often Ottawa had wet or snowy weather.

The climate data come from weather measurements made near downtown Ottawa.

Temperature Weather iconTemperature

December temperature averages by year in Ottawa
High °F Low °F Year High °C Low °C
34 25 2023 1 -4
34 23 2022 1 -5
32 19 2021 0 -7
32 20 2020 0 -7
31 18 2019 -1 -8
28 15 2018 -2 -9
22 12 2017 -6 -11
30 17 2016 -1 -9
41 30 2015 5 -1
30 20 2014 -1 -7
22 9 2013 -5 -13
30 18 2012 -1 -8
33 20 2011 1 -7
28 17 2010 -2 -8
Number of days in December when the temperature in Ottawa dropped to -18 or 0 or below, or rose to at least 21 degrees Celsius
-18 °C
0 °F
0 °C
32 °F
Year 21 °C
70 °F
0 24 2023 0
0 25 2022 0
1 29 2021 0
1 28 2020 0
2 30 2019 0
1 31 2018 0
6 28 2017 0
5 28 2016 0
0 16 2015 0
0 26 2014 0
10 31 2013 0
1 28 2012 0
2 28 2011 0
0 29 2010 0

Rainy Weather iconPrecipitation

This table gives the total precipitation that fell on Ottawa during December in each year from 2010. The number of days with precipitation counts the days when rainfall or snowfall (when melted) amounted to 0.254 millimeters (0.01 inches) or more.

Total precipitation for December in Ottawa
Days Year Inches Milli­metres
15 2023 3.2 82
16 2022 4.7 119
17 2021 2.7 69
14 2020 3.1 78
11 2019 2.5 62
16 2018 2.9 73
12 2017 1.3 33
19 2016 3.3 84
10 2015 3.6 92
6 2014 1.7 42
4 2013 2.1 53
13 2012 5.6 141
7 2011 2.6 67
2 2010 2.0 51

Snowy Weather iconSnow

Amount of snowfall in Ottawa for December and number of days when new snow totalled at least 2.5 centimetres (1 inch)
Days Year Inches Centi­metres
2 2023 9.8 24.9
8 2022 29.1 73.9
5 2021 16.5 41.9
2020
4 2019 20.1 51.1
4 2018 9.8 24.9
6 2017 15.3 38.9
11 2016 33.1 84.1
2 2015 12.3 31.2
3 2014 8.4 21.3
6 2013 22.9 58.2
7 2012 35.0 88.9
3 2011 11.0 27.9
2 2010 6.6 16.8
Reference

Environment and Climate Change Canada. Historical Climate Data. Historical Data

Jay Lawrimore. 2016. Global Summary of the Month, Version 1.0. NOAA National Centers for Environmental Information. 

Ottawa - Recent Years
Ottawa - Extremes
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