St. John's September Weather
Typical St. John's September Weather
1991–2020
|
| Average daily high |
17.0 °C |
| Average daily low |
8.5 °C |
| Average monthly precipitation |
12.8 cm |
| Average monthly snow |
0.0 cm |
| Daily chance of precipitation |
50.6% |
| Daily chance of snow |
0.11% |
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 |
19.0 |
10.5 |
26.7 |
1.7 |
| September 2 |
18.9 |
10.3 |
28.1 |
4.2 |
| September 3 |
18.8 |
10.2 |
28.6 |
2.7 |
| September 4 |
18.6 |
10.1 |
28.9 |
0.0 |
| September 5 |
18.5 |
9.9 |
26.6 |
2.5 |
| September 6 |
18.3 |
9.7 |
26.1 |
2.1 |
| September 7 |
18.2 |
9.6 |
27.8 |
1.7 |
| September 8 |
18.0 |
9.5 |
26.1 |
0.0 |
| September 9 |
17.9 |
9.4 |
25.5 |
0.3 |
| September 10 |
17.8 |
9.2 |
29.5 |
1.1 |
| September 11 |
17.6 |
9.1 |
29.2 |
0.0 |
| September 12 |
17.4 |
8.9 |
27.0 |
1.1 |
| September 13 |
17.3 |
8.7 |
26.1 |
0.6 |
| September 14 |
17.2 |
8.6 |
26.7 |
-0.6 |
| September 15 |
17.1 |
8.5 |
26.1 |
1.7 |
| September 16 |
17.0 |
8.4 |
28.5 |
-1.0 |
| September 17 |
16.9 |
8.4 |
26.1 |
-0.8 |
| September 18 |
16.8 |
8.4 |
25.6 |
0.0 |
| September 19 |
16.7 |
8.2 |
23.2 |
0.6 |
| September 20 |
16.4 |
8.1 |
24.4 |
-1.1 |
| September 21 |
16.3 |
8.0 |
25.6 |
-1.1 |
| September 22 |
16.1 |
7.8 |
25.0 |
0.0 |
| September 23 |
15.9 |
7.6 |
27.8 |
-1.1 |
| September 24 |
15.7 |
7.5 |
26.7 |
-0.6 |
| September 25 |
15.5 |
7.3 |
25.6 |
-1.1 |
| September 26 |
15.3 |
7.2 |
23.9 |
0.6 |
| September 27 |
15.1 |
7.0 |
24.4 |
-0.6 |
| September 28 |
14.9 |
6.8 |
25.6 |
-0.6 |
| September 29 |
14.7 |
6.6 |
25.6 |
-1.7 |
| September 30 |
14.4 |
6.5 |
25.6 |
-1.1 |
Weather Station Details
| Years |
Station |
Coordinates |
| 2012–2024 |
St. John's International Airport |
location |
| 1942–2012 |
St. John's A |
location |
| 1874–1941 |
St. John's |
location |