10-day forecast for Illiopolis, IL: 39° to 77°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.
77°
Best day: Thursday, October 29
63° · 0.7 in
Worst day: Tuesday, November 3
Tap any day below to see morning, afternoon, evening and overnight.
Thu, 2977° / 54°0
Morning56°feels 55°
Afternoon76°feels 76°
Evening65°feels 65°
Overnight56°feels 55°
77 °
Illiopolis, Thursday, 29 October
Clear. High 77°, low 54°.
Pressure30.15 inHg
Wind8.9 mph SW
Humidity57%
Visibility6.2 mi
Dew point56°
Fri, 3072° / 51°0.03
Morning51°feels 50°
Afternoon71°feels 70°
Evening65°feels 65°
Overnight58°feels 57°
72 °
Illiopolis, Friday, 30 October
Light rain. High 72°, low 51°.
Pressure30.27 inHg
Wind7.9 mph SE
Humidity53%
Visibility6.2 mi
Dew point50°
Sat, 3171° / 60°0
Morning60°feels 60°
Afternoon70°feels 70°
Evening62°feels 62°
Overnight61°feels 61°
71 °
Illiopolis, Saturday, 31 October
Overcast. High 71°, low 60°.
Pressure30.27 inHg
Wind4.7 mph SW
Humidity71%
Visibility6.2 mi
Dew point58°
Sun, 0174° / 53°0
Morning56°feels 55°
Afternoon73°feels 72°
Evening64°feels 64°
Overnight56°feels 55°
74 °
Illiopolis, Sunday, 1 November
Partly cloudy. High 74°, low 53°.
Pressure30.30 inHg
Wind5.8 mph SE
Humidity59%
Visibility6.2 mi
Dew point54°
Mon, 0268° / 56°0.06
Morning59°feels 59°
Afternoon66°feels 66°
Evening64°feels 64°
Overnight61°feels 61°
68 °
Illiopolis, Monday, 2 November
Light rain. High 68°, low 56°.
Pressure30.09 inHg
Wind16.6 mph S
Humidity64%
Visibility—
Dew point53°
Tue, 0363° / 59°0.7
Morning62°feels 62°
Afternoon61°feels 61°
Evening60°feels 60°
Overnight60°feels 60°
63 °
Illiopolis, Tuesday, 3 November
Rain. High 63°, low 59°.
Pressure29.88 inHg
Wind18.4 mph S
Humidity91%
Visibility—
Dew point59°
Wed, 0459° / 58°0.6
Morning59°feels 59°
Afternoon59°feels 59°
Evening59°feels 59°
Overnight59°feels 59°
59 °
Illiopolis, Wednesday, 4 November
Rain. High 59°, low 58°.
Pressure29.71 inHg
Wind12.2 mph E
Humidity94%
Visibility—
Dew point57°
Thu, 0560° / 51°0.41
Morning59°feels 59°
Afternoon58°feels 57°
Evening55°feels 54°
Overnight53°feels 51°
60 °
Illiopolis, Thursday, 5 November
Rain. High 60°, low 51°.
Pressure29.41 inHg
Wind18 mph NW
Humidity93%
Visibility—
Dew point56°
Fri, 0650° / 39°0
Morning42°feels 35°
Afternoon48°feels 42°
Evening44°feels 40°
Overnight41°feels 37°
50 °
Illiopolis, Friday, 6 November
Partly cloudy. High 50°, low 39°.
Pressure29.91 inHg
Wind14.3 mph NW
Humidity48%
Visibility—
Dew point28°
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.