Mound, IL climate
Mound has chilly winters and warm summers. A typical July afternoon reaches 85°, a January night drops to 17°, and about 11 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Mound feels like
Winter
Spring
Summer
Fall
Mound weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 33° | 17° | 1.8" | 3.2" | 8 | 6 | 17° – 37° |
| February | 38° | 21° | 1.9" | 3.5" | 8 | 4 | 16° – 40° |
| March | 50° | 30° | 2.4" | 0.6" | 9 | 1 | 32° – 54° |
| April | 63° | 40° | 4.0" | 0.4" | 11 | 0 | 43° – 59° |
| May | 74° | 52° | 5.1" | 0 | 12 | 0 | 58° – 71° |
| June | 82° | 61° | 4.8" | 0 | 11 | 0 | 68° – 75° |
| July | 85° | 65° | 4.1" | 0 | 10 | 0 | 69° – 81° |
| August | 84° | 62° | 3.7" | 0 | 9 | 0 | 68° – 78° |
| September | 78° | 54° | 3.6" | 0 | 8 | 0 | 60° – 71° |
| October | 65° | 42° | 3.1" | 0 | 9 | 0 | 48° – 59° |
| November | 50° | 32° | 2.7" | 0.8" | 8 | 1 | 33° – 50° |
| December | 38° | 22° | 2.0" | 2.0" | 8 | 2 | 15° – 39° |
| Year | 62° | 42° | 39.1" | 10.5" | 109 | 13 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Mound
Mound gets 39 inches of rain and melted snow a year. May is the wettest month and January the driest. Rain or snow falls on about 109 days a year. Snow covers the ground about 13 days of the year.
About 185 frost-free days a year
In half of years the last 32° night comes by April 17 and the first one by October 22. That leaves about 185 frost-free days for gardens, longer than 58% of U.S. towns.
Heating and cooling a home in Mound
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Mound, 85% of that work is heating and 15% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Mound and its neighbors
Mound borders 4 towns with climate data. January nights across them vary by 0.6°. Bushnell has the coldest January nights (16°) and Harris the hottest July afternoons (86°). Mound’s January low is 17° and its July high 85°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.