London September Weather
Averages and records for weather in
London, Ontario in the month of September.
Typical London September Weather
1991–2020
|
| Average daily high |
22.0 °C |
| Average daily low |
10.5 °C |
| Average monthly precipitation |
8.8 cm |
| Daily chance of precipitation |
36.0% |
Note: Daily averages are a moving average which includes 14 days before and after
| Day |
Average (°C) |
Record (°C) |
| High |
Low |
High |
Low |
| September 1 |
24.4 |
12.9 |
34.4 |
2.8 |
| September 2 |
24.2 |
12.8 |
34.4 |
2.2 |
| September 3 |
24.1 |
12.7 |
33.9 |
2.8 |
| September 4 |
24.1 |
12.5 |
34.4 |
3.3 |
| September 5 |
23.9 |
12.4 |
33.3 |
2.8 |
| September 6 |
23.8 |
12.3 |
33.3 |
2.8 |
| September 7 |
23.7 |
12.2 |
32.2 |
1.1 |
| September 8 |
23.5 |
12.0 |
35.6 |
1.1 |
| September 9 |
23.3 |
11.7 |
34.2 |
0.0 |
| September 10 |
23.2 |
11.5 |
34.4 |
-1.7 |
| September 11 |
23.0 |
11.3 |
34.4 |
0.0 |
| September 12 |
22.8 |
11.1 |
35.0 |
0.6 |
| September 13 |
22.6 |
11.0 |
33.9 |
2.2 |
| September 14 |
22.4 |
10.8 |
32.2 |
0.0 |
| September 15 |
22.2 |
10.6 |
33.3 |
1.1 |
| September 16 |
21.9 |
10.5 |
34.4 |
-0.6 |
| September 17 |
21.7 |
10.3 |
31.7 |
-1.1 |
| September 18 |
21.4 |
10.1 |
32.8 |
-0.6 |
| September 19 |
21.2 |
9.9 |
32.2 |
-1.7 |
| September 20 |
21.0 |
9.8 |
31.7 |
-2.2 |
| September 21 |
20.7 |
9.5 |
32.2 |
-2.8 |
| September 22 |
20.4 |
9.3 |
32.2 |
-3.3 |
| September 23 |
20.2 |
9.1 |
32.2 |
-2.2 |
| September 24 |
20.1 |
8.9 |
32.2 |
-1.1 |
| September 25 |
19.9 |
8.8 |
33.9 |
-1.7 |
| September 26 |
19.7 |
8.6 |
33.3 |
-2.8 |
| September 27 |
19.5 |
8.4 |
30.0 |
-3.3 |
| September 28 |
19.3 |
8.2 |
28.3 |
-2.8 |
| September 29 |
19.1 |
8.0 |
29.4 |
-2.2 |
| September 30 |
18.8 |
7.8 |
29.4 |
-1.9 |
Weather Station Details
| Years |
Station |
Coordinates |
| 2002–2024 |
London CS |
location |
| 1941–2002 |
London International Airport |
location |
| 1932–1940 |
London Lambeth A |
location |
| 1883–1931 |
London South |
location |