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Simpson, IL Climate
1991 to 2020 normals at Dixon Springs Agric Ctr, 5.2 mi from the center of Simpson, elevation 527 ft.
Average weather by month
Select a month for daily normals and last year's weather
| Month | Range | High | Low | Precip. | Snow |
|---|---|---|---|---|---|
| January | 43° | 26° | 3.84 in | 1.7 in | |
| February | 49° | 29° | 3.64 in | 3.2 in | |
| March | 59° | 37° | 4.66 in | 0.6 in | |
| April | 70° | 46° | 4.96 in | 0.0 in | |
| May | 77° | 56° | 5.19 in | 0.0 in | |
| June | 85° | 63° | 4.08 in | 0.0 in | |
| July | 88° | 67° | 4.39 in | 0.0 in | |
| August | 87° | 65° | 3.65 in | 0.0 in | |
| September | 82° | 58° | 3.79 in | 0.0 in | |
| October | 71° | 46° | 3.84 in | 0.3 in | |
| November | 57° | 37° | 4.30 in | 0.0 in | |
| December | 46° | 29° | 4.16 in | 1.4 in | |
| Year | 68° | 50.50 in | 7.2 in |
Frequently asked questions
- What is the hottest month in Simpson, IL?
- July is the warmest month, with a normal high of 88°F at Dixon Springs Agric Ctr.
- What is the coldest month in Simpson, IL?
- January is the coldest month, with a normal low of 26°F.
- What is the wettest month in Simpson, IL?
- May has the most precipitation on average, about 5.19 inches.