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Monthly
Precipitation
Temperature
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Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Oshawa, ON
Exceptional El Niño dominates this fall
Content continues below
Content continues below
September
Average Temperature
High
20°
Feels 21
Low
14°
Feels 13
Average Precipitation
10 Days
Rain amount
59.1mm
Snow amount
0.1cm
Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
20°
21
16°
22
16°
23
16°
24
17°
25
20°
26
19°
27
20°
28
19°
29
18°
30
18°
Forecast
Sunday, September 20, 2026
Day
20°
Feels 21
Wind
22 km/h N
Gust
33 km/h
Humidity
53%
P.O.P
30%
Night
11°
Feels 8
Wind
33 km/h NE
Gust
50 km/h
Humidity
82%
P.O.P
30%
Historical Averages
Sep 20
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.