St. John's NL - Recent December Temperatures, Rain & Snow

The numbers here describe what the December weather in St. John's, Newfoundland 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 St. John's had wet or snowy weather.

The climate data come from weather measurements made at the St. John's Airport.

Temperature Weather iconTemperature

December temperature averages by year in St. John's
High °F Low °F Year High °C Low °C
38 27 2023 3 -3
37 30 2022 3 -1
35 24 2021 2 -4
41 30 2020 5 -1
36 24 2019 2 -4
31 22 2018 0 -6
37 26 2017 3 -3
33 21 2016 1 -6
34 24 2015 1 -5
38 27 2014 3 -3
32 18 2013 0 -8
2012
36 25 2011 2 -4
41 35 2010 5 2
Number of days in December when the temperature in St. John's 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 25 2023 0
0 17 2022 0
0 24 2021 0
0 22 2020 0
0 27 2019 0
0 30 2018 0
0 27 2017 0
0 30 2016 0
0 27 2015 0
0 24 2014 0
0 26 2013 0
2012
0 27 2011 0
0 8 2010 0

Rainy Weather iconPrecipitation

This table gives the total precipitation that fell on St. John's 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 St. John's
Days Year Inches Milli­metres
14 2023 2.2 55
23 2022 4.8 121
22 2021 6.1 156
19 2020 6.5 166
20 2019 5.1 130
20 2018 3.6 92
20 2017 7.6 193
17 2016 8.1 205
14 2015 2.7 70
17 2014 4.7 120
17 2013 4.8 121
2012
9 2011 4.0 103
18 2010 12.9 327

Snowy Weather iconSnow

Amount of snowfall in St. John's for December and number of days when new snow totalled at least 2.5 centimetres (1 inch)
Days Year Inches Centi­metres
5 2023 16.8 42.7
0 2022 2.4 6.1
7 2021 19.0 48.3
2020
10 2019 34.0 86.4
8 2018 30.3 77.0
7 2017 23.7 60.2
13 2016 46.9 119.1
4 2015 21.5 54.6
1 2014 4.4 11.2
8 2013 32.9 83.6
2012
5 2011 12.7 32.3
2 2010 3.5 8.9
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. 

St. John's - Recent Years
St. John's - Extremes
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