Climate - Jerseyville - Illinois
| Jan | Feb | March | April | May | June | |
|---|---|---|---|---|---|---|
| Average high in °F | 35 | 41 | 53 | 64 | 74 | 83 |
| Average low in °F | 17 | 22 | 32 | 42 | 52 | 61 |
| Av. precipitation - inch | 1.93 | 2.01 | 3.5 | 4.13 | 3.94 | 3.66 |
| July | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Average high in °F | 87 | 86 | 79 | 68 | 53 | 40 |
| Average low in °F | 66 | 63 | 55 | 43 | 34 | 23 |
| Av. precipitation - inch | 3.5 | 2.91 | 3.23 | 2.87 | 3.78 | 2.83 |
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Jerseyville Climate Graph - Illinois Climate Chart
Totals and averages
| Annual average high temperature | 63.6 °F |
| Annual average low temperature | 42.5 °F |
| Average temperature | 53.1 °F |
| Average annual precipitation | 38.3 in. |