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°C
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Monthly Historical Averages
Harpers Ferry, IA
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December
Average Temperature
High
0°
Feels -3
Low
-9°
Feels -13
Average Precipitation
5 Days
Rain amount
9.9mm
Snow amount
13cm
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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
29
30
-4°
31
-3°
Forecast
Tuesday, December 30, 2025
Day
-4°
Feels -9
Wind
16 km/h SW
Gust
24 km/h
Humidity
73%
P.O.P
60%
Snow
~1 cm
Night
-4°
Feels -10
Wind
20 km/h NW
Gust
30 km/h
Humidity
93%
P.O.P
40%
Snow
<1 cm
Historical Averages
Dec 30
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.