10-day forecast for Illiopolis, IL: 28° to 68°, with precipitation expected on 1 day. The table below breaks each day into morning, afternoon, evening and overnight.
68°
Best day: Tuesday, November 10
43°
Worst day: Friday, November 13
Tap any day below to see morning, afternoon, evening and overnight.
Wed, 1164° / 44°0.04
Morning52°feels 51°
Afternoon63°feels 62°
Evening49°feels 44°
Overnight45°feels 44°
64 °
Illiopolis, Wednesday, 11 November
Light rain. High 64°, low 44°.
Pressure29.77 inHg
Wind14.3 mph W
Humidity77%
Visibility6.2 mi
Dew point53°
Thu, 1249° / 39°0
Morning45°feels 39°
Afternoon48°feels 41°
Evening42°feels 34°
Overnight44°feels 38°
49 °
Illiopolis, Thursday, 12 November
Partly cloudy. High 49°, low 39°.
Pressure29.94 inHg
Wind15.1 mph N
Humidity53%
Visibility6.2 mi
Dew point32°
Fri, 1343° / 34°0
Morning37°feels 30°
Afternoon43°feels 37°
Evening35°feels 31°
Overnight34°feels 28°
43 °
Illiopolis, Friday, 13 November
Overcast. High 43°, low 34°.
Pressure30.09 inHg
Wind12.7 mph NW
Humidity62%
Visibility6.2 mi
Dew point23°
Sat, 1445° / 28°0
Morning34°feels 34°
Afternoon43°feels 43°
Evening37°feels 37°
Overnight30°feels 26°
45 °
Illiopolis, Saturday, 14 November
Clear. High 45°, low 28°.
Pressure30.24 inHg
Wind4.2 mph N
Humidity58%
Visibility—
Dew point28°
Sun, 1549° / 28°0
Morning34°feels 30°
Afternoon47°feels 44°
Evening40°feels 36°
Overnight35°feels 31°
49 °
Illiopolis, Sunday, 15 November
Overcast. High 49°, low 28°.
Pressure30.39 inHg
Wind6 mph SE
Humidity51%
Visibility—
Dew point28°
Mon, 1652° / 33°0
Morning38°feels 34°
Afternoon49°feels 46°
Evening43°feels 39°
Overnight39°feels 35°
52 °
Illiopolis, Monday, 16 November
Mostly clear. High 52°, low 33°.
Pressure30.50 inHg
Wind6.7 mph E
Humidity40%
Visibility—
Dew point24°
Tue, 1752° / 35°0
Morning40°feels 35°
Afternoon49°feels 46°
Evening44°feels 41°
Overnight40°feels 36°
52 °
Illiopolis, Tuesday, 17 November
Clear. High 52°, low 35°.
Pressure30.47 inHg
Wind6.4 mph SE
Humidity42%
Visibility—
Dew point26°
Wed, 1855° / 36°0
Morning41°feels 36°
Afternoon51°feels 48°
Evening46°feels 41°
Overnight42°feels 37°
55 °
Illiopolis, Wednesday, 18 November
Clear. High 55°, low 36°.
Pressure30.39 inHg
Wind9.1 mph SE
Humidity39%
Visibility—
Dew point26°
Thu, 1958° / 38°0
Morning43°feels 38°
Afternoon55°feels 52°
Evening50°feels 47°
Overnight46°feels 42°
58 °
Illiopolis, Thursday, 19 November
Overcast. High 58°, low 38°.
Pressure30.33 inHg
Wind11.4 mph SE
Humidity35%
Visibility—
Dew point27°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Illiopolis, IL around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.