South Muddy, IL climate
South Muddy has chilly winters and warm summers. A typical July afternoon reaches 87°, a January night drops to 22°, and about 16 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in South Muddy feels like
Winter
Spring
Summer
Fall
South Muddy 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° | 3.2" | 5.3" | 10 | 7 | 23° – 40° |
| February | 43° | 25° | 2.5" | 3.9" | 9 | 4 | 22° – 43° |
| March | 54° | 34° | 3.6" | 2.1" | 11 | 1 | 37° – 58° |
| April | 66° | 44° | 4.8" | 0.2" | 10 | 0 | 48° – 61° |
| May | 75° | 55° | 4.9" | 0 | 12 | 0 | 59° – 73° |
| June | 84° | 63° | 4.9" | 0 | 11 | 0 | 69° – 77° |
| July | 87° | 67° | 4.4" | 0 | 8 | 0 | 71° – 84° |
| August | 86° | 64° | 3.4" | 0 | 8 | 0 | 70° – 81° |
| September | 80° | 57° | 3.3" | 0 | 6 | 0 | 64° – 74° |
| October | 68° | 45° | 3.7" | 0 | 8 | 0 | 52° – 62° |
| November | 53° | 35° | 3.9" | 0.7" | 9 | 1 | 37° – 51° |
| December | 42° | 26° | 3.0" | 3.8" | 10 | 5 | 20° – 44° |
| Year | 65° | 45° | 45.5" | 16.0" | 111 | 18 |
“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 South Muddy
South Muddy 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 111 days a year. Snow covers the ground about 18 days of the year.
About 190 frost-free days a year
In half of years the last 32° night comes by April 13 and the first one by October 22. That leaves about 190 frost-free days for gardens, longer than 64% of U.S. towns.
Heating and cooling a home in South Muddy
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In South Muddy, 80% of that work is heating and 20% 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.
South Muddy and its neighbors
South Muddy borders 4 towns with climate data. January nights across them vary by 0.6°. North Muddy has the coldest January nights (22°) and Pixley the hottest July afternoons (87°). South Muddy’s January low is 22° and its July high 87°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How South Muddy 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 South Muddy averaged 0.9° warmer than the 1900s. The biggest change is in December (+2.0°). The shift is smaller than in 74% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at South Muddy’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 44°. June is the most reliable, staying within 8°.
Common questions about South Muddy’s climate
What is the coldest month in South Muddy?
January, with a typical high of 38° and a low of 22°.
What is the hottest month in South Muddy?
July, with a typical high of 87° and a low of 67°. About 30 days a year reach 90°.
How much snow does South Muddy get?
About 16 inches in a normal winter, most of it in January.
When is the first frost in South Muddy?
In half of years the first 32° night comes by October 22, and the last spring frost by April 13.
What is the rainiest month in South Muddy?
May, with 4.9 inches of rain and melted snow. The year totals 45 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for South Muddy itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Newton, IL (9 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.