Oshawa Average Weather by Day
Data and chart of the the average high and low temperature for every day of the year in
Oshawa, Ontario , based on NOAA data.
Change city
What's the hottest day of the year in Oshawa?
On average, July 21 is the hottest day of the year Oshawa, Ontario. From 1991–2020, the average high temperature on July 21 was 25.8 °C and the average low was 16.1 °C.
What's the coldest day of the year in Oshawa?
On average, January 30 is the coldest day of the year Oshawa, Ontario. From 1991–2020, the average high temperature on January 30 was -1.4 °C, and the average low was -9.5 °C.
Average Temperature by Day
Average temperatures from 1991–2020. Daily averages are a mean of the period from 14 days before to 14 days after, inclusive.
Day
Average (°C)
High
Low
January 1
0.5
-6.8
January 2
0.4
-6.9
January 3
0.3
-7.1
January 4
0.2
-7.2
January 5
0.1
-7.3
January 6
0.0
-7.5
January 7
-0.3
-7.8
January 8
-0.4
-8.0
January 9
-0.4
-8.1
January 10
-0.5
-8.2
January 11
-0.6
-8.3
January 12
-0.7
-8.4
January 13
-0.8
-8.6
January 14
-0.8
-8.6
January 15
-0.9
-8.7
January 16
-0.9
-8.8
January 17
-1.0
-8.9
January 18
-1.0
-8.9
January 19
-1.1
-9.0
January 20
-1.1
-9.1
January 21
-1.0
-9.1
January 22
-1.1
-9.1
January 23
-1.1
-9.1
January 24
-1.1
-9.1
January 25
-1.2
-9.2
January 26
-1.3
-9.3
January 27
-1.4
-9.4
January 28
-1.4
-9.5
January 29
-1.4
-9.5
January 30
-1.4
-9.5
January 31
-1.4
-9.5
February 1
-1.3
-9.5
February 2
-1.3
-9.5
February 3
-1.3
-9.5
February 4
-1.2
-9.5
February 5
-1.1
-9.3
February 6
-1.0
-9.1
February 7
-0.9
-9.0
February 8
-0.8
-8.9
February 9
-0.7
-8.8
February 10
-0.5
-8.7
February 11
-0.4
-8.6
February 12
-0.4
-8.5
February 13
-0.3
-8.5
February 14
-0.3
-8.4
February 15
-0.2
-8.3
February 16
-0.1
-8.2
February 17
-0.1
-8.2
February 18
0.0
-8.2
February 19
0.0
-8.1
February 20
0.1
-8.0
February 21
0.2
-7.9
February 22
0.4
-7.8
February 23
0.6
-7.7
February 24
0.7
-7.5
February 25
0.8
-7.4
February 26
1.0
-7.3
February 27
1.2
-7.1
February 28
1.4
-6.8
March 1
1.6
-6.6
March 2
1.7
-6.4
March 3
1.9
-6.3
March 4
2.1
-6.1
March 5
2.3
-5.9
March 6
2.4
-5.8
March 7
2.5
-5.7
March 8
2.6
-5.6
March 9
2.7
-5.5
March 10
2.8
-5.4
March 11
3.0
-5.3
March 12
3.2
-5.1
March 13
3.5
-4.9
March 14
3.7
-4.6
March 15
4.0
-4.4
March 16
4.2
-4.1
March 17
4.4
-3.9
March 18
4.7
-3.7
March 19
4.9
-3.4
March 20
5.2
-3.2
March 21
5.4
-3.0
March 22
5.5
-2.8
March 23
5.7
-2.7
March 24
5.8
-2.5
March 25
6.0
-2.3
March 26
6.2
-2.1
March 27
6.5
-1.9
March 28
6.7
-1.7
March 29
6.9
-1.5
March 30
7.0
-1.4
March 31
7.3
-1.2
April 1
7.5
-1.0
April 2
7.8
-0.7
April 3
8.0
-0.5
April 4
8.2
-0.4
April 5
8.5
-0.1
April 6
8.8
0.1
April 7
9.0
0.3
April 8
9.3
0.6
April 9
9.5
0.8
April 10
9.7
0.9
April 11
9.9
1.1
April 12
10.0
1.2
April 13
10.1
1.3
April 14
10.3
1.4
April 15
10.5
1.6
April 16
10.7
1.7
April 17
10.9
1.9
April 18
11.2
2.1
April 19
11.5
2.3
April 20
11.8
2.6
April 21
12.0
2.8
April 22
12.3
3.0
April 23
12.6
3.2
April 24
12.8
3.3
April 25
13.1
3.6
April 26
13.4
3.8
April 27
13.6
4.0
April 28
13.8
4.2
April 29
14.0
4.4
April 30
14.2
4.5
May 1
14.4
4.7
May 2
14.5
4.8
May 3
14.7
5.0
May 4
14.9
5.1
May 5
15.1
5.3
May 6
15.3
5.4
May 7
15.5
5.6
May 8
15.7
5.8
May 9
16.0
6.0
May 10
16.2
6.2
May 11
16.5
6.4
May 12
16.7
6.6
May 13
16.9
6.9
May 14
17.1
7.1
May 15
17.4
7.3
May 16
17.6
7.5
May 17
17.8
7.6
May 18
18.0
7.8
May 19
18.2
8.0
May 20
18.3
8.2
May 21
18.4
8.3
May 22
18.5
8.5
May 23
18.7
8.7
May 24
18.8
8.8
May 25
19.0
9.0
May 26
19.2
9.2
May 27
19.4
9.4
May 28
19.7
9.6
May 29
19.9
9.8
May 30
20.0
10.0
May 31
20.2
10.2
June 1
20.4
10.5
June 2
20.6
10.6
June 3
20.8
10.8
June 4
21.0
11.1
June 5
21.2
11.3
June 6
21.3
11.5
June 7
21.5
11.6
June 8
21.7
11.8
June 9
21.9
12.0
June 10
22.0
12.1
June 11
22.2
12.3
June 12
22.4
12.4
June 13
22.5
12.6
June 14
22.7
12.8
June 15
22.8
12.9
June 16
22.9
13.1
June 17
23.1
13.2
June 18
23.3
13.4
June 19
23.4
13.5
June 20
23.7
13.7
June 21
23.8
13.8
June 22
24.0
14.0
June 23
24.1
14.2
June 24
24.2
14.3
June 25
24.3
14.4
June 26
24.3
14.4
June 27
24.5
14.5
June 28
24.6
14.6
June 29
24.7
14.7
June 30
24.8
14.8
July 1
24.9
15.0
July 2
25.0
15.1
July 3
25.1
15.1
July 4
25.2
15.2
July 5
25.3
15.3
July 6
25.3
15.4
July 7
25.4
15.5
July 8
25.4
15.5
July 9
25.5
15.6
July 10
25.5
15.6
July 11
25.6
15.7
July 12
25.6
15.7
July 13
25.6
15.7
July 14
25.6
15.7
July 15
25.7
15.8
July 16
25.7
15.8
July 17
25.7
15.9
July 18
25.8
16.0
July 19
25.8
16.0
July 20
25.8
16.0
July 21
25.8
16.1
July 22
25.8
16.1
July 23
25.8
16.0
July 24
25.8
16.0
July 25
25.8
16.0
July 26
25.8
16.0
July 27
25.8
16.1
July 28
25.7
16.1
July 29
25.7
16.0
July 30
25.7
16.0
July 31
25.6
16.0
August 1
25.6
16.0
August 2
25.5
15.9
August 3
25.5
15.9
August 4
25.5
15.9
August 5
25.4
15.8
August 6
25.4
15.7
August 7
25.3
15.7
August 8
25.2
15.6
August 9
25.2
15.6
August 10
25.2
15.6
August 11
25.1
15.5
August 12
25.1
15.5
August 13
25.0
15.5
August 14
25.0
15.5
August 15
25.0
15.4
August 16
24.9
15.3
August 17
24.8
15.2
August 18
24.7
15.1
August 19
24.6
15.0
August 20
24.5
15.0
August 21
24.5
14.9
August 22
24.4
14.9
August 23
24.3
14.8
August 24
24.3
14.7
August 25
24.2
14.6
August 26
24.0
14.5
August 27
23.9
14.4
August 28
23.8
14.3
August 29
23.7
14.1
August 30
23.6
14.0
August 31
23.5
13.9
September 1
23.3
13.8
September 2
23.2
13.6
September 3
23.1
13.5
September 4
23.0
13.4
September 5
22.8
13.2
September 6
22.7
13.1
September 7
22.6
12.9
September 8
22.4
12.8
September 9
22.3
12.6
September 10
22.1
12.4
September 11
21.9
12.2
September 12
21.7
12.0
September 13
21.5
11.8
September 14
21.4
11.7
September 15
21.1
11.5
September 16
20.9
11.3
September 17
20.7
11.1
September 18
20.5
10.9
September 19
20.2
10.7
September 20
20.0
10.6
September 21
19.7
10.3
September 22
19.5
10.1
September 23
19.3
9.9
September 24
19.1
9.6
September 25
18.9
9.4
September 26
18.7
9.3
September 27
18.5
9.1
September 28
18.2
8.9
September 29
18.0
8.6
September 30
17.8
8.4
October 1
17.6
8.2
October 2
17.3
8.0
October 3
17.0
7.8
October 4
16.8
7.6
October 5
16.6
7.4
October 6
16.3
7.2
October 7
16.0
7.1
October 8
15.7
6.9
October 9
15.5
6.7
October 10
15.3
6.5
October 11
15.0
6.4
October 12
14.7
6.1
October 13
14.5
5.9
October 14
14.3
5.7
October 15
14.0
5.6
October 16
13.8
5.3
October 17
13.6
5.1
October 18
13.4
5.0
October 19
13.2
4.8
October 20
13.0
4.6
October 21
12.7
4.4
October 22
12.5
4.3
October 23
12.3
4.1
October 24
12.1
3.9
October 25
11.8
3.7
October 26
11.6
3.5
October 27
11.4
3.4
October 28
11.2
3.2
October 29
11.0
3.0
October 30
10.7
2.8
October 31
10.5
2.6
November 1
10.3
2.4
November 2
10.1
2.3
November 3
9.8
2.1
November 4
9.6
1.9
November 5
9.4
1.7
November 6
9.3
1.6
November 7
9.1
1.5
November 8
8.9
1.2
November 9
8.6
1.0
November 10
8.4
0.7
November 11
8.2
0.6
November 12
8.1
0.5
November 13
7.9
0.4
November 14
7.8
0.3
November 15
7.6
0.1
November 16
7.4
0.0
November 17
7.3
-0.1
November 18
7.1
-0.2
November 19
6.9
-0.4
November 20
6.7
-0.5
November 21
6.5
-0.7
November 22
6.2
-0.8
November 23
6.0
-1.0
November 24
5.7
-1.2
November 25
5.5
-1.4
November 26
5.3
-1.6
November 27
5.1
-1.7
November 28
4.9
-1.9
November 29
4.8
-2.0
November 30
4.6
-2.2
December 1
4.4
-2.3
December 2
4.3
-2.4
December 3
4.1
-2.6
December 4
3.9
-2.8
December 5
3.7
-3.0
December 6
3.5
-3.2
December 7
3.4
-3.4
December 8
3.3
-3.5
December 9
3.2
-3.5
December 10
3.1
-3.7
December 11
2.9
-3.9
December 12
2.7
-4.1
December 13
2.5
-4.3
December 14
2.4
-4.4
December 15
2.2
-4.6
December 16
2.0
-4.8
December 17
1.9
-5.0
December 18
1.8
-5.1
December 19
1.6
-5.3
December 20
1.5
-5.5
December 21
1.4
-5.6
December 22
1.4
-5.6
December 23
1.3
-5.7
December 24
1.1
-5.8
December 25
1.0
-6.0
December 26
1.0
-6.1
December 27
0.9
-6.2
December 28
0.9
-6.2
December 29
0.9
-6.3
December 30
0.8
-6.4
December 31
0.6
-6.6