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Ruma, IL Climate
1991 to 2020 normals at Kaskaskia Rvr Navigation Lock, 10 mi from the center of Ruma, elevation 380 ft.
Average weather by month
Select a month for daily normals and last year's weather
| Month | Range | High | Low | Precip. | Snow |
|---|---|---|---|---|---|
| January | 40° | 24° | 2.73 in | 1.4 in | |
| February | 46° | 27° | 2.35 in | 1.5 in | |
| March | 56° | 35° | 3.41 in | 0.1 in | |
| April | 68° | 44° | 4.67 in | 0.0 in | |
| May | 77° | 55° | 5.18 in | 0.0 in | |
| June | 86° | 64° | 4.14 in | 0.0 in | |
| July | 89° | 68° | 4.13 in | 0.0 in | |
| August | 88° | 66° | 3.34 in | 0.0 in | |
| September | 81° | 58° | 2.94 in | 0.0 in | |
| October | 70° | 46° | 3.07 in | 0.0 in | |
| November | 56° | 37° | 4.01 in | 0.4 in | |
| December | 44° | 28° | 2.85 in | 0.9 in | |
| Year | 67° | 42.82 in | 4.3 in |
Frequently asked questions
- What is the hottest month in Ruma, IL?
- July is the warmest month, with a normal high of 89°F at Kaskaskia Rvr Navigation Lock.
- What is the coldest month in Ruma, IL?
- January is the coldest month, with a normal low of 24°F.
- What is the wettest month in Ruma, IL?
- May has the most precipitation on average, about 5.18 inches.