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14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Saint John, NB
Exceptional El Niño dominates this fall
Content continues below
September
Average Temperature
High
18°
Feels 18
Low
10°
Feels 9
Average Precipitation
9 Days
Rain amount
63.5mm
Snow amount
0cm
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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
19°
18
20°
19
17°
20
16°
21
18°
22
17°
23
17°
24
17°
25
16°
26
17°
27
17°
28
16°
29
16°
30
17°
Forecast
Thursday, September 17, 2026
Day
19°
Feels 20
Wind
9 km/h N
Gust
14 km/h
Humidity
68%
P.O.P
30%
Night
14°
Feels 12
Wind
17 km/h S
Gust
25 km/h
Humidity
100%
P.O.P
100%
Rain
5-10 mm
Historical Averages
Sep 17
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.