Climate - Olney - Illinois
| Jan | Feb | March | April | May | June | |
|---|---|---|---|---|---|---|
| Average high in °F | 36 | 42 | 53 | 65 | 75 | 84 |
| Average low in °F | 19 | 22 | 32 | 42 | 52 | 62 |
| Av. precipitation - inch | 2.83 | 2.72 | 4.33 | 4.37 | 4.76 | 4.06 |
| July | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Average high in °F | 87 | 86 | 80 | 69 | 54 | 41 |
| Average low in °F | 65 | 63 | 55 | 44 | 34 | 24 |
| Av. precipitation - inch | 4.13 | 3.54 | 3.07 | 3.35 | 4.41 | 3.66 |
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Olney Climate Graph - Illinois Climate Chart
Totals and averages
| Annual average high temperature | 64.4 °F |
| Annual average low temperature | 42.8 °F |
| Average temperature | 53.6 °F |
| Average annual precipitation | 45.2 in. |