Witt, IL climate
Witt has chilly winters and warm summers. A typical July afternoon reaches 86°, a January night drops to 20°, and about 16 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Witt feels like
Winter
Spring
Summer
Fall
Witt 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 | 36° | 20° | 2.5" | 5.9" | 7 | 10 | 22° – 39° |
| February | 41° | 24° | 2.2" | 3.9" | 7 | 5 | 21° – 43° |
| March | 53° | 33° | 3.0" | 2.4" | 9 | 1 | 36° – 57° |
| April | 65° | 43° | 4.6" | 0 | 10 | 0 | 46° – 60° |
| May | 75° | 54° | 4.8" | 0 | 11 | 0 | 59° – 72° |
| June | 84° | 62° | 4.5" | 0 | 9 | 0 | 68° – 76° |
| July | 86° | 66° | 3.8" | 0 | 7 | 0 | 71° – 83° |
| August | 85° | 63° | 3.4" | 0 | 7 | 0 | 69° – 80° |
| September | 80° | 56° | 3.1" | 0 | 7 | 0 | 63° – 72° |
| October | 67° | 44° | 3.4" | 0.2" | 9 | 0 | 52° – 62° |
| November | 53° | 34° | 3.3" | 0.6" | 8 | 1 | 35° – 51° |
| December | 41° | 25° | 2.5" | 3.2" | 8 | 4 | 19° – 41° |
| Year | 64° | 44° | 40.9" | 16.2" | 100 | 22 |
“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 Witt
Witt gets 41 inches of rain and melted snow a year. May is the wettest month and February the driest. Rain or snow falls on about 100 days a year. Snow covers the ground about 22 days of the year.
About 192 frost-free days a year
In half of years the last 32° night comes by April 13 and the first one by October 24. That leaves about 192 frost-free days for gardens, longer than 66% of U.S. towns.
Heating and cooling a home in Witt
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Witt, 78% of that work is heating and 22% 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 Witt 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 Witt averaged 0.9° warmer than the 1900s. The biggest change is in December (+1.8°). The shift is smaller than in 78% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Witt’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 19° to 41°. June is the most reliable, staying within 9°.
Common questions about Witt’s climate
What is the coldest month in Witt?
January, with a typical high of 36° and a low of 20°.
What is the hottest month in Witt?
July, with a typical high of 86° and a low of 66°. About 42 days a year reach 90°.
How much snow does Witt get?
About 16 inches in a normal winter, most of it in January.
When is the first frost in Witt?
In half of years the first 32° night comes by October 24, and the last spring frost by April 13.
What is the rainiest month in Witt?
May, with 4.8 inches of rain and melted snow. The year totals 41 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Witt itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Morrisonville, IL (13 mi, snow) and Hillsboro, IL (10 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.