10-day forecast for Rio, IL: 60° to 93°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.
93°
Best day: Sunday, August 9
66° · 0.31 in
Worst day: Saturday, August 15
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 0993° / 65°0
Morning75°feels 76°
Afternoon89°feels 102°
Evening83°feels 93°
Overnight68°feels 69°
93 °
Rio, Sunday, 9 August
Clear. High 93°, low 65°.
Pressure29.85 inHg
Wind16.6 mph S
Humidity68%
Visibility6.2 mi
Dew point74°
Mon, 1087° / 73°0
Morning76°feels 77°
Afternoon86°feels 93°
Evening81°feels 85°
Overnight78°feels 78°
87 °
Rio, Monday, 10 August
Overcast. High 87°, low 73°.
Pressure29.88 inHg
Wind4.8 mph S
Humidity75%
Visibility6.2 mi
Dew point72°
Tue, 1190° / 75°0
Morning77°feels 78°
Afternoon89°feels 96°
Evening82°feels 87°
Overnight76°feels 77°
90 °
Rio, Tuesday, 11 August
Overcast. High 90°, low 75°.
Pressure29.80 inHg
Wind13.3 mph SW
Humidity68%
Visibility6.2 mi
Dew point70°
Wed, 1282° / 70°0.05
Morning74°feels 76°
Afternoon79°feels 80°
Evening74°feels 75°
Overnight73°feels 75°
82 °
Rio, Wednesday, 12 August
Light rain. High 82°, low 70°.
Pressure29.88 inHg
Wind6.2 mph N
Humidity68%
Visibility6.2 mi
Dew point72°
Thu, 1373° / 64°0.03
Morning66°feels 67°
Afternoon72°feels 73°
Evening66°feels 66°
Overnight65°feels 65°
73 °
Rio, Thursday, 13 August
Light rain. High 73°, low 64°.
Pressure29.97 inHg
Wind9.8 mph E
Humidity76%
Visibility—
Dew point64°
Fri, 1477° / 61°0
Morning65°feels 66°
Afternoon75°feels 76°
Evening71°feels 71°
Overnight67°feels 67°
77 °
Rio, Friday, 14 August
Overcast. High 77°, low 61°.
Pressure30.09 inHg
Wind12.1 mph E
Humidity62%
Visibility—
Dew point60°
Sat, 1566° / 60°0.31
Morning63°feels 62°
Afternoon62°feels 62°
Evening64°feels 64°
Overnight62°feels 62°
66 °
Rio, Saturday, 15 August
Rain. High 66°, low 60°.
Pressure30.27 inHg
Wind12.7 mph E
Humidity86%
Visibility—
Dew point58°
Sun, 1675° / 60°0.03
Morning62°feels 62°
Afternoon70°feels 71°
Evening72°feels 73°
Overnight67°feels 67°
75 °
Rio, Sunday, 16 August
Light rain. High 75°, low 60°.
Pressure30.12 inHg
Wind8.3 mph E
Humidity79%
Visibility—
Dew point61°
Mon, 1780° / 65°0.07
Morning69°feels 69°
Afternoon79°feels 79°
Evening76°feels 77°
Overnight68°feels 69°
80 °
Rio, Monday, 17 August
Light rain. High 80°, low 65°.
Pressure30.06 inHg
Wind5.1 mph SE
Humidity71%
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 Rio, 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.