Average Precipitation for Ontario in December

The tables below give monthly averages for rainfall plus snowfall during December at cities, towns and parks in Ontario. Each place has a total for how many days of wet weather it usually gets this month and for the normal amount of precipitation.

You can jump to a separate table for each section of the province: Eastern, Central, Southwestern, Northeastern and Northwestern Ontario.

The calculation of days only includes the days when precipitation totalled at least 0.2 millimetres (0.008 inches). The month's total precipitation is an average of weather data collected during 1981 to 2010.

Eastern Ontario

Average monthly precipitation in December
Days	Place	Inches	Millimetres
14	Belleville	3.1	79
14	Cornwall	3.0	76
16	Kingston	3.3	84
16	Ottawa	2.7	70
19	Pembroke	2.3	59

Central Ontario

December averages for total rainfall plus snowfall
Days	Place	Inches	Millimetres
14	Barrie	2.9	74
12	Brantford	2.6	65
15	French River, Chaudiere Dam	3.2	80
14	Hamilton	2.8	72
15	Huntsville	3.7	94
17	Midland	3.7	95
17	Niagara Falls	3.4	87
13	Oshawa	2.8	71
13	Peterborough	2.9	74
15	St Catharines	2.8	71
13	Toronto	2.4	61

Southwestern Ontario

Average amount of rain and snow in December
Days	Place	Inches	Millimetres
13	Chatham-Kent	2.6	67
17	Guelph	3.2	81
18	London	3.4	87
20	Owen Sound	5.1	130
15	Point Pelee National Park	3.0	77
14	Sarnia	2.5	64
18	Waterloo	2.8	71
15	Windsor	2.9	74

Northeastern Ontario

Precipitation totals for December
Days	Place	Inches	Millimetres
19	Chapleau	2.5	64
18	Gore Bay	2.8	70
20	Kapuskasing	2.2	56
16	Moosonee	1.6	42
20	North Bay	3.1	78
20	Sault Ste Marie	3.0	77
17	South Baymouth	3.7	94
18	Sudbury	2.7	67
20	Timmins	2.5	64
18	Wawa	2.9	73

Northwestern Ontario

Total precipitation during December
Days	Place	Inches	Millimetres
10	Atikokan	1.4	36
17	Big Trout Lake	1.1	28
14	Dryden	1.1	29
8	Fort Frances	1.3	32
16	Kenora	1.1	28
15	Red Lake	1.2	30
12	Thunder Bay	1.4	35