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7 Days
14 Days
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°C
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Monthly Historical Averages
Lanark, ON
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December
Average Temperature
High
-1°
Feels -4
Low
-9°
Feels -14
Average Precipitation
10 Days
Rain amount
17mm
Snow amount
27.2cm
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
-3°
26
-13°
27
-9°
28
-7°
29
1°
30
-13°
31
-9°
Forecast
Thursday, December 25, 2025
Day
-3°
Feels -8
Wind
25 km/h N
Gust
38 km/h
Humidity
52%
P.O.P
30%
Night
-18°
Feels -26
Wind
20 km/h N
Gust
30 km/h
Humidity
77%
P.O.P
20%
Historical Averages
Dec 25
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.