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Weather Averages for
Alton, IA
Latitude: 43°2'N,
Longitude: 96°9'W,
Elevation: 414.5 m,
Distance: 5.09 km
Average temperature over 30 years |
°C |
8 |
-9 |
-5 |
1 |
9 |
15 |
21 |
23 |
21 |
16 |
10 |
1 |
-6 |
Average high temperature over 30 years |
°C |
14 |
-3 |
0 |
6 |
16 |
23 |
28 |
30 |
28 |
24 |
17 |
7 |
-1 |
Average low temperature over 30 years |
°C |
1 |
-14 |
-11 |
-4 |
2 |
8 |
13 |
16 |
14 |
9 |
3 |
-3 |
-11 |
Highest recorded temperature over 98 years |
°C |
40 |
18 |
20 |
30 |
34 |
40 |
40 |
39 |
38 |
38 |
33 |
23 |
16 |
Lowest recorded temperature over 98 years |
°C |
-38 |
-38 |
-35 |
-28 |
-18 |
-8 |
0 |
3 |
2 |
-6 |
-12 |
-28 |
-33 |
Average number of days above 27°C over 30 years |
days |
13 |
- |
- |
- |
0.1 |
0.7 |
3.1 |
4.6 |
3.1 |
0.9 |
0.1 |
- |
- |
Average precipitation over 30 years |
cm |
69.3 |
1.5 |
1.8 |
4.8 |
6.3 |
8.6 |
11.2 |
8.9 |
8.4 |
7.6 |
5.1 |
2.8 |
2.0 |
Average number of days below -1.5°C over 30 years |
days |
93 |
18 |
16 |
14 |
7.1 |
1.1 |
- |
- |
- |
0.6 |
5.1 |
13 |
18 |
Average number of days below -17.5°C over 30 years |
days |
15 |
6.4 |
4.3 |
0.9 |
- |
- |
- |
- |
- |
- |
- |
0.4 |
3.4 |
Average snowfall over 30 years |
cm |
88.9 |
16.5 |
15.0 |
20.3 |
5.1 |
- |
- |
- |
- |
- |
3.0 |
10.9 |
18.5 |
Most rain reported in a day over 98 years |
cm |
17.0 |
3.0 |
3.0 |
6.6 |
9.9 |
8.9 |
10.9 |
16.5 |
17.0 |
15.2 |
7.1 |
4.6 |
3.3 |
Most rain reported in a month over 98 years |
cm |
100.8 |
5.8 |
8.6 |
11.9 |
23.1 |
21.6 |
30.0 |
31.2 |
25.4 |
40.9 |
14.7 |
13.2 |
7.9 |
Least rain reported in a month over 98 years |
cm |
36.1 |
- |
- |
- |
0.8 |
0.8 |
0.5 |
1.8 |
1.3 |
0.5 |
- |
- |
- |
Heating degree days over 30 years |
days |
7365 |
1535 |
1229 |
962 |
497 |
194 |
29 |
5 |
19 |
148 |
446 |
909 |
1392 |
Cooling degree days over 30 years |
days |
795 |
- |
- |
- |
8 |
51 |
177 |
279 |
204 |
69 |
7 |
- |
- |
Most snow reported in a month over 98 years |
cm |
180.8 |
54.9 |
55.9 |
59.4 |
34.8 |
0.5 |
- |
- |
- |
- |
20.3 |
43.2 |
56.6 |
Check weather averages for nearby locations (some locations might offer more data):
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