Altona, Illinois
ID: USC00110140 Latitude: 41.1203 Longitude: -90.1642
Elevation: 765.1 feet ( 233.2 meters)
Source: NOAA Climate Normals 1991-2020
Precipitation Total: 39.38 in., 15.5 cm.
Monthly Data Table for Altona, Illinois
Monthly Data from NOAA Monthly Normals 2006-2020
Imperial Units
Statistic |
Units |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Maximum Temperature |
°F |
30.7 |
33.4 |
48.6 |
61.4 |
72.6 |
81.3 |
83.9 |
82.3 |
77.0 |
63.4 |
48.9 |
36.1 |
Minimum Temperature |
°F |
13.1 |
13.5 |
27.1 |
36.6 |
49.7 |
59.6 |
62.3 |
59.7 |
52.8 |
40.4 |
28.5 |
19.0 |
Heating Degree Days |
°F |
1336.0 |
1163.0 |
843.6 |
483.5 |
180.7 |
17.9 |
6.2 |
10.0 |
99.5 |
417.9 |
789.3 |
1160.8 |
Cooling Degree Days |
°F |
0.0 |
0.0 |
1.7 |
3.6 |
61.2 |
181.2 |
257.2 |
195.9 |
96.3 |
11.9 |
0.3 |
0.0 |
Precipitation |
I |
1.7 |
2.2 |
2.9 |
4.3 |
5.6 |
5.3 |
3.8 |
3.9 |
4.7 |
2.9 |
2.3 |
2.4 |
Metric Units
Statistic |
Units |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Maximum Temperature |
°C |
-0.7 |
0.8 |
9.2 |
16.3 |
22.6 |
27.4 |
28.8 |
27.9 |
25.0 |
17.4 |
9.4 |
2.3 |
Minimum Temperature |
°C |
-10.5 |
-10.3 |
-2.7 |
2.6 |
9.8 |
15.3 |
16.8 |
15.4 |
11.6 |
4.7 |
-1.9 |
-7.2 |
Heating Degree Days |
°C |
724.4 |
628.3 |
450.9 |
250.8 |
82.6 |
-7.8 |
-14.3 |
-12.2 |
37.5 |
214.4 |
420.7 |
627.1 |
Cooling Degree Days |
°C |
-17.8 |
-17.8 |
-16.8 |
-15.8 |
16.2 |
82.9 |
125.1 |
91.1 |
35.7 |
-11.2 |
-17.6 |
-17.8 |
Precipitation |
M |
4.3 |
5.6 |
7.5 |
10.8 |
14.1 |
13.5 |
9.7 |
9.9 |
12.0 |
7.4 |
5.9 |
6.2 |