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Dover, IL Climate
1991 to 2020 normals at Princeton, 5.6 mi from the center of Dover, elevation 697 ft.
Average weather by month
Select a month for daily normals and last year's weather
| Month | Range | High | Low | Precip. | Snow |
|---|---|---|---|---|---|
| January | 30° | 14° | 1.96 in | 8.6 in | |
| February | 35° | 18° | 2.00 in | 6.9 in | |
| March | 48° | 28° | 2.52 in | 3.7 in | |
| April | 62° | 38° | 4.03 in | 0.9 in | |
| May | 73° | 50° | 5.07 in | 0.0 in | |
| June | 82° | 60° | 4.64 in | 0.0 in | |
| July | 85° | 63° | 3.66 in | 0.0 in | |
| August | 82° | 61° | 4.02 in | 0.0 in | |
| September | 76° | 53° | 3.90 in | 0.0 in | |
| October | 63° | 42° | 3.14 in | 0.3 in | |
| November | 48° | 30° | 2.61 in | 1.3 in | |
| December | 35° | 20° | 2.24 in | 6.8 in | |
| Year | 60° | 39.79 in | 28.5 in |
Frequently asked questions
- What is the hottest month in Dover, IL?
- July is the warmest month, with a normal high of 85°F at Princeton.
- What is the coldest month in Dover, IL?
- January is the coldest month, with a normal low of 14°F.
- What is the wettest month in Dover, IL?
- May has the most precipitation on average, about 5.07 inches.