Checked
Long Grove, IL Climate
1991 to 2020 normals at Mundelein 4 Wsw, 5.5 mi from the center of Long Grove, elevation 840 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° | 1.76 in | 11.0 in | |
| February | 33° | 16° | 1.93 in | 12.8 in | |
| March | 44° | 26° | 2.49 in | 5.3 in | |
| April | 57° | 36° | 3.95 in | 1.8 in | |
| May | 68° | 47° | 4.57 in | 0.0 in | |
| June | 78° | 58° | 4.38 in | 0.0 in | |
| July | 82° | 62° | 4.01 in | 0.0 in | |
| August | 81° | 61° | 4.19 in | 0.0 in | |
| September | 74° | 53° | 3.38 in | 0.0 in | |
| October | 61° | 42° | 3.20 in | 0.0 in | |
| November | 47° | 30° | 2.47 in | 2.5 in | |
| December | 34° | 20° | 2.12 in | 9.7 in | |
| Year | 57° | 38.45 in | 43.1 in |
Frequently asked questions
- What is the hottest month in Long Grove, IL?
- July is the warmest month, with a normal high of 82°F at Mundelein 4 Wsw.
- What is the coldest month in Long Grove, IL?
- January is the coldest month, with a normal low of 14°F.
- What is the wettest month in Long Grove, IL?
- May has the most precipitation on average, about 4.57 inches.