Prairie Green, IL climate
Prairie Green has chilly winters and warm summers. A typical July afternoon reaches 84°, a January night drops to 17°, and about 20 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Prairie Green feels like
Winter
Spring
Summer
Fall
Prairie Green 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° | 2.2" | 6.5" | 9 | 11 | 17° – 38° |
| February | 38° | 20° | 1.9" | 5.2" | 8 | 7 | 17° – 40° |
| March | 50° | 30° | 2.6" | 2.2" | 9 | 2 | 33° – 54° |
| April | 63° | 39° | 4.0" | 0.4" | 11 | 0 | 43° – 57° |
| May | 74° | 51° | 4.4" | 0 | 11 | 0 | 55° – 70° |
| June | 82° | 60° | 4.8" | 0 | 10 | 0 | 67° – 74° |
| July | 84° | 63° | 4.6" | 0 | 9 | 0 | 68° – 79° |
| August | 83° | 61° | 3.5" | 0 | 8 | 0 | 67° – 78° |
| September | 78° | 53° | 3.2" | 0 | 8 | 0 | 60° – 70° |
| October | 65° | 42° | 3.2" | 0.1" | 9 | 0 | 50° – 60° |
| November | 50° | 32° | 2.9" | 0.6" | 9 | 1 | 33° – 49° |
| December | 38° | 22° | 2.3" | 5.3" | 8 | 6 | 16° – 40° |
| Year | 61° | 41° | 39.7" | 20.3" | 108 | 27 |
“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 Prairie Green
Prairie Green gets 40 inches of rain and melted snow a year. June is the wettest month and February the driest. Rain or snow falls on about 108 days a year. Snow covers the ground about 27 days of the year.
About 180 frost-free days a year
In half of years the last 32° night comes by April 22 and the first one by October 19. That leaves about 180 frost-free days for gardens, longer than 53% of U.S. towns.
Heating and cooling a home in Prairie Green
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Prairie Green, 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.
Prairie Green and its neighbors
Prairie Green borders 4 towns with climate data. January nights across them vary by 0.3°. Hickory Grove has the coldest January nights (17°) and Lovejoy the hottest July afternoons (85°). Prairie Green’s January low is 17° and its July high 84°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Prairie Green 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 Prairie Green averaged 0.9° warmer than the 1900s. The biggest change is in December (+2.0°). The shift is smaller than in 77% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Prairie Green’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 16° to 40°. June is the most reliable, staying within 7°.
Common questions about Prairie Green’s climate
What is the coldest month in Prairie Green?
January, with a typical high of 33° and a low of 17°.
What is the hottest month in Prairie Green?
July, with a typical high of 84° and a low of 63°. About 20 days a year reach 90°.
How much snow does Prairie Green get?
About 20 inches in a normal winter, most of it in January.
When is the first frost in Prairie Green?
In half of years the first 32° night comes by October 19, and the last spring frost by April 22.
What is the rainiest month in Prairie Green?
June, with 4.8 inches of rain and melted snow. The year totals 40 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Prairie Green itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Hoopeston, IL (7 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.