Iola, IL climate
Iola has chilly winters and warm summers. A typical July afternoon reaches 87°, a January night drops to 22°, and about 8 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decade16° warmer than normal today. The forecast high is 90°, and a typical Oct 1 in Iola peaks around 74°.Live forecast: National Weather Service · Normal: NOAA 1991–2020
What a year in Iola feels like
Winter
Spring
Summer
Fall
Iola 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 | 38° | 22° | 3.1" | 3.1" | 8 | 5 | 23° – 41° |
| February | 43° | 25° | 2.4" | 1.7" | 7 | 3 | 22° – 43° |
| March | 54° | 34° | 3.6" | 1.4" | 8 | 0 | 36° – 58° |
| April | 66° | 43° | 4.8" | 0 | 10 | 0 | 47° – 61° |
| May | 75° | 54° | 5.0" | 0 | 11 | 0 | 60° – 73° |
| June | 84° | 63° | 4.8" | 0 | 9 | 0 | 69° – 77° |
| July | 87° | 66° | 4.1" | 0 | 8 | 0 | 71° – 83° |
| August | 86° | 64° | 3.4" | 0 | 7 | 0 | 70° – 80° |
| September | 80° | 56° | 3.3" | 0 | 6 | 0 | 64° – 74° |
| October | 68° | 45° | 3.5" | 0 | 7 | 0 | 52° – 61° |
| November | 54° | 35° | 3.9" | 0.4" | 8 | 0 | 36° – 50° |
| December | 42° | 26° | 2.9" | 1.7" | 8 | 3 | 20° – 43° |
| Year | 65° | 45° | 44.9" | 8.3" | 96 | 12 |
“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 Iola
Iola gets 45 inches of rain and melted snow a year. May is the wettest month and February the driest. Rain or snow falls on about 96 days a year. Snow covers the ground about 12 days of the year.
About 196 frost-free days a year
In half of years the last 32° night comes by April 10 and the first one by October 23. That leaves about 196 frost-free days for gardens, longer than 70% of U.S. towns.
Heating and cooling a home in Iola
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Iola, 77% of that work is heating and 23% is cooling.
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.
How Iola 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 Iola averaged 1.0° warmer than the 1900s. The biggest change is in December (+2.0°). The shift is smaller than in 68% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Iola’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 20° to 43°. June is the most reliable, staying within 9°.
Common questions about Iola’s climate
What is the coldest month in Iola?
January, with a typical high of 38° and a low of 22°.
What is the hottest month in Iola?
July, with a typical high of 87° and a low of 66°. About 35 days a year reach 90°.
How much snow does Iola get?
About 8 inches in a normal winter, most of it in January.
When is the first frost in Iola?
In half of years the first 32° night comes by October 23, and the last spring frost by April 10.
What is the rainiest month in Iola?
May, with 5.0 inches of rain and melted snow. The year totals 45 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Iola itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Flora 5 Nw, IL (9 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.