Benton, IL climate
Benton has chilly, snowy winters and pleasant summers. A typical July afternoon reaches 82°, a January night drops to 16°, and about 36 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Benton feels like
Winter
Spring
Summer
Fall
Benton 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 | 31° | 16° | 1.8" | 11.3" | 10 | 18 | 14° – 35° |
| February | 34° | 20° | 1.7" | 9.8" | 9 | 12 | 14° – 37° |
| March | 44° | 28° | 2.3" | 5.7" | 10 | 5 | 29° – 50° |
| April | 55° | 37° | 3.8" | 0.8" | 12 | 0 | 39° – 52° |
| May | 67° | 47° | 4.1" | 0 | 12 | 0 | 51° – 63° |
| June | 77° | 57° | 4.2" | 0 | 11 | 0 | 62° – 72° |
| July | 82° | 63° | 3.4" | 0 | 9 | 0 | 68° – 79° |
| August | 80° | 62° | 3.6" | 0 | 10 | 0 | 66° – 76° |
| September | 73° | 55° | 3.4" | 0 | 9 | 0 | 58° – 69° |
| October | 61° | 43° | 3.3" | 0.1" | 10 | 0 | 48° – 58° |
| November | 47° | 32° | 2.4" | 1.5" | 10 | 1 | 32° – 48° |
| December | 36° | 22° | 1.9" | 7.0" | 10 | 7 | 17° – 38° |
| Year | 57° | 40° | 35.9" | 36.2" | 120 | 44 |
“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 Benton
Benton gets 36 inches of rain and melted snow a year. June is the wettest month and February the driest. Rain or snow falls on about 120 days a year. Snow covers the ground about 44 days of the year.
About 173 frost-free days a year
In half of years the last 32° night comes by April 30 and the first one by October 21. That leaves about 173 frost-free days for gardens, shorter than 57% of U.S. towns.
Heating and cooling a home in Benton
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Benton, 91% of that work is heating and 9% 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.
Benton and its neighbors
Benton borders 8 towns with climate data. January nights across them vary by 2.0°. Wadsworth has both the coldest January nights (15°) and the hottest July afternoons (82°). Benton’s January low is 16° and its July high 82°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Benton 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 Benton averaged 1.0° warmer than the 1900s. The biggest change is in December (+2.4°). The shift is smaller than in 71% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Benton’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 14° to 37°. June is the most reliable, staying within 10°.
Common questions about Benton’s climate
What is the coldest month in Benton?
January, with a typical high of 31° and a low of 16°.
What is the hottest month in Benton?
July, with a typical high of 82° and a low of 63°. About 9 days a year reach 90°.
How much snow does Benton get?
About 36 inches in a normal winter, most of it in January.
When is the first frost in Benton?
In half of years the first 32° night comes by October 21, and the last spring frost by April 30.
What is the rainiest month in Benton?
June, with 4.2 inches of rain and melted snow. The year totals 36 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Benton itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Kenosha, WI (9 mi, snow) and Chicago Waukegan Rgnl Airport, IL (1 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.