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Smiths Falls, ON
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December
Average Temperature
High
-1°
Feels -3
Low
-8°
Feels -13
Average Precipitation
11 Days
Rain amount
25.8mm
Snow amount
34cm
Daily Historical Averages
December 2025
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
21
22
23
24
25
26
27
28
-7°
29
4°
30
-11°
31
-10°
Forecast
Sunday, December 28, 2025
Day
-7°
Feels -11
Wind
10 km/h NE
Gust
16 km/h
Humidity
67%
P.O.P
30%
Night
-8°
Feels -14
Wind
17 km/h E
Gust
26 km/h
Humidity
93%
P.O.P
100%
Snow
<1 cm
Rain
~25 mm
Historical Averages
Dec 28
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.