CLIMATE CHARTS
Grafton, Illinois
Latitude: 38.9681 Longitude: -90.4289
Elevation: 442.9 feet (135.0 meters)
This station does not report temperature data.
Monthly Data Table for Grafton, Illinois
Imperial Units
Statistic |
Units |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Maximum Temperature |
°F |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Minimum Temperature |
°F |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Heating Degree Days |
°F |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Cooling Degree Days |
°F |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Precipitation |
in. |
2.44 |
2.29 |
3.07 |
4.07 |
4.52 |
3.81 |
3.82 |
3.27 |
3.38 |
2.97 |
3.68 |
2.87 |
Metric Units
Statistic |
Units |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Maximum Temperature |
°C |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Minimum Temperature |
°C |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Heating Degree Days |
°C |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Cooling Degree Days |
°C |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Precipitation |
cm. |
6.20 |
5.82 |
7.80 |
10.34 |
11.48 |
9.68 |
9.70 |
8.31 |
8.59 |
7.54 |
9.35 |
7.29 |