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Forsyth, IL Climate
1991 to 2020 normals at Decatur Wtp, 6.7 mi from the center of Forsyth, elevation 639 ft.
Average weather by month
Select a month for daily normals and last year's weather
| Month | Range | High | Low | Precip. | Snow |
|---|---|---|---|---|---|
| January | 34° | 20° | 2.40 in | 5.9 in | |
| February | 39° | 24° | 2.00 in | 2.5 in | |
| March | 51° | 33° | 2.64 in | 0.9 in | |
| April | 63° | 43° | 4.12 in | 0.4 in | |
| May | 74° | 54° | 4.95 in | 0.0 in | |
| June | 82° | 63° | 4.73 in | 0.0 in | |
| July | 85° | 67° | 4.00 in | 0.0 in | |
| August | 84° | 65° | 3.50 in | 0.0 in | |
| September | 78° | 57° | 3.08 in | 0.0 in | |
| October | 65° | 46° | 3.41 in | 0.0 in | |
| November | 50° | 34° | 3.21 in | 0.4 in | |
| December | 39° | 25° | 2.40 in | 3.5 in | |
| Year | 62° | 40.44 in | 13.6 in |
Frequently asked questions
- What is the hottest month in Forsyth, IL?
- July is the warmest month, with a normal high of 85°F at Decatur Wtp.
- What is the coldest month in Forsyth, IL?
- January is the coldest month, with a normal low of 20°F.
- What is the wettest month in Forsyth, IL?
- May has the most precipitation on average, about 4.95 inches.