The Climate and Weather of Windsor, Ontario

Windsor's Climate

Located in the far south of Ontario, close to the border and the American city of Detroit, Windsor enjoys the warmest climate of any of Ontario's cities.

Windsor has a semi-continental climate, with a warm, humid summer and a cold winter.

Windsor's climate is modified by its location on the shores of North America's Great Lakes. The water in the lakes ensures Windsor is warmer in winter and cooler in summer than it would otherwise be. The lakes are also the source of Windsor's summer humidity, which many people find uncomfortable.

Although Windsor is Ontario's warmest city, winters are still severe. Snow depths of greater than 1 cm are seen on about 53 days each year in Windsor compared with about 65 days further north in Toronto.

Many factories and industrial plants in both Canada and the USA are located on the Great Lakes and smog has become something of a problem in Southern Ontario. More than half of the smog is wind-borne from the USA. Windsor's smog comes in summer. In 2004, downtown Windsor had 49 days when air-quality dropped to "moderate" and 2 days when it was "poor". There were no days when air quality was "very poor".

Windsor enjoys a sunny climate. Its summers usually have a generous number of warm or hot sunny days. Winters are rather less sunny than in the prairie cities of Calgary and Winnipeg.

Windsor's day to day weather can be changeable throughout the year.

Windsor, Ontario

Month	Av. Daily Maximum Temp. (OC)	Av. Daily Minimum Temp. (OC)	Av. hours Sunshine (per day)	Av. Days with Rainfall	Av. Days with Snowfall	Av. Depth of Snow on Ground (cm)	Average Windspeed (km per hr)
Jan.	-1	-8	3.4	6	12	5	19
Feb.	1	-7	4.4	6	9	4	18
Mar.	6	-2	5.4	9	7	1	19
Apr.	13	3	6.6	12	2	0	18
May	21	9	8.4	12	0	0	16
Jun.	25	15	9.0	11	0	0	14
Jul.	28	17	9.5	10	0	0	13
Aug.	27	17	8.3	11	0	0	12
Sep.	23	12	7.0	11	0	0	13
Oct.	16	6	5.5	11	0	0	15
Nov.	8	1	4.1	11	4	0	17
Dec.	2	-5	2.6	8	10	3	17