10-day forecast for Ideal, IL: 58° to 87°, with precipitation expected on 5 days. The table below breaks each day into morning, afternoon, evening and overnight.
82°
Best day: Wednesday, August 12
73° · 0.33 in
Worst day: Thursday, August 13
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1087° / 71°0.15
Morning75°feels 77°
Afternoon86°feels 98°
Evening77°feels 79°
Overnight76°feels 77°
87 °
Ideal, Monday, 10 August
Rain. High 87°, low 71°.
Pressure29.88 inHg
Wind4 mph E
Humidity88%
Visibility6.2 mi
Dew point75°
Tue, 1185° / 69°0.06
Morning72°feels 73°
Afternoon82°feels 86°
Evening77°feels 78°
Overnight72°feels 74°
85 °
Ideal, Tuesday, 11 August
Rain. High 85°, low 69°.
Pressure29.74 inHg
Wind15.7 mph S
Humidity86%
Visibility6.2 mi
Dew point71°
Wed, 1282° / 67°0
Morning71°feels 72°
Afternoon83°feels 88°
Evening71°feels 72°
Overnight70°feels 72°
82 °
Ideal, Wednesday, 12 August
Light rain. High 82°, low 67°.
Pressure29.85 inHg
Wind6.1 mph N
Humidity74%
Visibility6.2 mi
Dew point72°
Thu, 1373° / 61°0.33
Morning65°feels 65°
Afternoon72°feels 72°
Evening64°feels 64°
Overnight65°feels 64°
73 °
Ideal, Thursday, 13 August
Rain. High 73°, low 61°.
Pressure30.03 inHg
Wind8.7 mph E
Humidity70%
Visibility—
Dew point62°
Fri, 1473° / 58°0.02
Morning62°feels 62°
Afternoon72°feels 72°
Evening68°feels 69°
Overnight64°feels 64°
73 °
Ideal, Friday, 14 August
Light rain. High 73°, low 58°.
Pressure30.15 inHg
Wind10.6 mph E
Humidity63%
Visibility—
Dew point57°
Sat, 1574° / 58°0.05
Morning62°feels 62°
Afternoon72°feels 72°
Evening69°feels 70°
Overnight64°feels 65°
74 °
Ideal, Saturday, 15 August
Light rain. High 74°, low 58°.
Pressure30.21 inHg
Wind10.7 mph SE
Humidity66%
Visibility—
Dew point59°
Sun, 1677° / 64°0.02
Morning66°feels 67°
Afternoon72°feels 73°
Evening73°feels 74°
Overnight69°feels 70°
77 °
Ideal, Sunday, 16 August
Light rain. High 77°, low 64°.
Pressure30.09 inHg
Wind5.8 mph E
Humidity87%
Visibility—
Dew point67°
Mon, 1780° / 64°0
Morning68°feels 69°
Afternoon78°feels 78°
Evening74°feels 75°
Overnight67°feels 67°
80 °
Ideal, Monday, 17 August
Overcast. High 80°, low 64°.
Pressure30.09 inHg
Wind5.4 mph NE
Humidity67%
Visibility—
Dew point64°
Tue, 1879° / 62°0
Morning66°feels 67°
Afternoon76°feels 77°
Evening76°feels 77°
Overnight69°feels 70°
79 °
Ideal, Tuesday, 18 August
Overcast. High 79°, low 62°.
Pressure29.97 inHg
Wind10.5 mph S
Humidity78%
Visibility—
Dew point67°
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 Ideal, 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.