Four Mile, IL climate
Four Mile has chilly winters and warm summers. A typical July afternoon reaches 88°, a January night drops to 24°, and about 10 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Four Mile feels like
Winter
Spring
Summer
Fall
Four Mile 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 | 40° | 24° | 3.2" | 3.2" | 9 | 5 | 26° – 42° |
| February | 45° | 27° | 2.6" | 3.1" | 8 | 3 | 25° – 45° |
| March | 55° | 35° | 4.0" | 1.0" | 11 | 1 | 38° – 58° |
| April | 67° | 44° | 4.9" | 0 | 11 | 0 | 49° – 61° |
| May | 76° | 55° | 5.1" | 0 | 13 | 0 | 60° – 72° |
| June | 85° | 64° | 4.8" | 0 | 10 | 0 | 69° – 78° |
| July | 88° | 67° | 4.0" | 0 | 9 | 0 | 72° – 84° |
| August | 87° | 65° | 3.5" | 0 | 8 | 0 | 71° – 82° |
| September | 81° | 57° | 3.3" | 0 | 8 | 0 | 64° – 75° |
| October | 69° | 46° | 3.4" | 0.2" | 9 | 0 | 53° – 63° |
| November | 55° | 36° | 3.9" | 0.4" | 9 | 0 | 38° – 51° |
| December | 44° | 28° | 3.1" | 2.5" | 10 | 2 | 21° – 45° |
| Year | 66° | 46° | 45.8" | 10.4" | 115 | 11 |
“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 Four Mile
Four Mile gets 46 inches of rain and melted snow a year. May is the wettest month and February the driest. Rain or snow falls on about 115 days a year. Snow covers the ground about 11 days of the year.
About 193 frost-free days a year
In half of years the last 32° night comes by April 11 and the first one by October 22. That leaves about 193 frost-free days for gardens, longer than 67% of U.S. towns.
Heating and cooling a home in Four Mile
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Four Mile, 81% of that work is heating and 19% 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.
Four Mile and its neighbors
Four Mile borders 5 towns with climate data. January nights across them vary by 0.8°. Hickory Hill has the coldest January nights (23°) and Orel the hottest July afternoons (88°). Four Mile’s January low is 24° and its July high 88°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Four Mile compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Four Mile averaged 0.9° warmer than the 1900s. The biggest change is in February (+2.1°). The shift is smaller than in 80% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Four Mile’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. December swings the most: between 1991 and 2020 its average temperature ranged from 21° to 45°. June is the most reliable, staying within 9°.
Common questions about Four Mile’s climate
What is the coldest month in Four Mile?
January, with a typical high of 40° and a low of 24°.
What is the hottest month in Four Mile?
July, with a typical high of 88° and a low of 67°. About 21 days a year reach 90°.
How much snow does Four Mile get?
About 10 inches in a normal winter, most of it in January.
When is the first frost in Four Mile?
In half of years the first 32° night comes by October 22, and the last spring frost by April 11.
What is the rainiest month in Four Mile?
May, with 5.1 inches of rain and melted snow. The year totals 46 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Four Mile itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Mt Vernon 3 Ne, IL (11 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.