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Harmon, IL Climate
1991 to 2020 normals at Dixon 1w, 7.9 mi from the center of Harmon, elevation 660 ft.
Average weather by month
Select a month for daily normals and last year's weather
| Month | Range | High | Low | Precip. | Snow |
|---|---|---|---|---|---|
| January | 29° | 14° | 1.97 in | 13.0 in | |
| February | 34° | 17° | 1.81 in | 5.7 in | |
| March | 46° | 28° | 2.63 in | 4.5 in | |
| April | 60° | 39° | 3.98 in | 0.6 in | |
| May | 71° | 51° | 4.82 in | 0.0 in | |
| June | 80° | 61° | 5.59 in | 0.0 in | |
| July | 83° | 64° | 4.29 in | 0.0 in | |
| August | 81° | 62° | 4.19 in | 0.0 in | |
| September | 75° | 54° | 3.69 in | 0.0 in | |
| October | 63° | 42° | 2.96 in | 0.0 in | |
| November | 48° | 31° | 2.43 in | 1.8 in | |
| December | 35° | 20° | 2.17 in | 5.6 in | |
| Year | 59° | 40.53 in | 31.2 in |
Frequently asked questions
- What is the hottest month in Harmon, IL?
- July is the warmest month, with a normal high of 83°F at Dixon 1w.
- What is the coldest month in Harmon, IL?
- January is the coldest month, with a normal low of 14°F.
- What is the wettest month in Harmon, IL?
- June has the most precipitation on average, about 5.59 inches.