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Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Smiths Falls, ON
Exceptional El Niño dominates this fall
Content continues below
September
Average Temperature
High
21°
Feels 22
Low
10°
Feels 9
Average Precipitation
11 Days
Rain amount
68.2mm
Snow amount
0cm
Content continues below
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°
19
16°
20
19°
21
15°
22
16°
23
18°
24
18°
25
19°
26
18°
27
18°
28
18°
29
18°
30
18°
Forecast
Friday, September 18, 2026
Day
19°
Feels 19
Wind
19 km/h N
Gust
29 km/h
Humidity
43%
P.O.P
10%
Night
6°
Feels 4
Wind
14 km/h N
Gust
21 km/h
Humidity
76%
P.O.P
20%
Historical Averages
Sep 18
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.