CLIMATE CHARTS
St Charles, Missouri
Latitude: 38.6856 Longitude: -90.5231
Elevation: 450.1 feet (137.2 meters)
Monthly Data Table for St Charles, Missouri
Imperial Units
Statistic |
Units |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Maximum Temperature |
°F |
39.7 |
44.9 |
55.0 |
66.9 |
75.8 |
84.5 |
88.5 |
87.3 |
80.0 |
68.5 |
56.2 |
42.7 |
Minimum Temperature |
°F |
21.5 |
25.2 |
34.5 |
45.4 |
55.7 |
64.9 |
68.9 |
66.7 |
57.5 |
45.5 |
36.1 |
24.9 |
Heating Degree Days |
°F |
1066 |
839 |
634 |
300 |
88 |
9 |
0 |
2 |
56 |
276 |
569 |
967 |
Cooling Degree Days |
°F |
0 |
0 |
6 |
35 |
111 |
300 |
425 |
374 |
169 |
28 |
4 |
0 |
Precipitation |
in. |
2.03 |
2.32 |
3.27 |
3.67 |
4.98 |
4.03 |
4.05 |
3.22 |
3.37 |
3.33 |
3.90 |
2.97 |
Metric Units
Statistic |
Units |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Maximum Temperature |
°C |
4.3 |
7.2 |
12.8 |
19.4 |
24.3 |
29.2 |
31.4 |
30.7 |
26.7 |
20.3 |
13.4 |
5.9 |
Minimum Temperature |
°C |
-5.8 |
-3.8 |
1.4 |
7.4 |
13.2 |
18.3 |
20.5 |
19.3 |
14.2 |
7.5 |
2.3 |
-3.9 |
Heating Degree Days |
°C |
592 |
466 |
352 |
167 |
49 |
5 |
0 |
1 |
31 |
153 |
316 |
537 |
Cooling Degree Days |
°C |
0 |
0 |
3 |
19 |
62 |
167 |
236 |
208 |
94 |
16 |
2 |
0 |
Precipitation |
cm. |
5.16 |
5.89 |
8.31 |
9.32 |
12.65 |
10.24 |
10.29 |
8.18 |
8.56 |
8.46 |
9.91 |
7.54 |