10-day forecast for Zion, IL: 58° to 82°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.
82°
Best day: Tuesday, August 18
81° · 1.24 in
Worst day: Sunday, August 9
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1082° / 69°0.46
Morning72°feels 74°
Afternoon78°feels 79°
Evening70°feels 71°
Overnight73°feels 74°
82 °
Zion, Monday, 10 August
Rain. High 82°, low 69°.
Pressure29.91 inHg
Wind3.6 mph SE
Humidity84%
Visibility6.2 mi
Dew point70°
Tue, 1177° / 68°0.77
Morning73°feels 75°
Afternoon71°feels 72°
Evening70°feels 71°
Overnight70°feels 71°
77 °
Zion, Tuesday, 11 August
Heavy rain. High 77°, low 68°.
Pressure29.80 inHg
Wind5.5 mph E
Humidity90%
Visibility6.2 mi
Dew point70°
Wed, 1280° / 67°0.02
Morning69°feels 70°
Afternoon77°feels 78°
Evening70°feels 71°
Overnight67°feels 68°
80 °
Zion, Wednesday, 12 August
Light rain. High 80°, low 67°.
Pressure29.85 inHg
Wind3.4 mph NW
Humidity71%
Visibility6.2 mi
Dew point68°
Thu, 1369° / 63°0
Morning65°feels 65°
Afternoon69°feels 68°
Evening66°feels 65°
Overnight63°feels 63°
69 °
Zion, Thursday, 13 August
Overcast. High 69°, low 63°.
Pressure30.03 inHg
Wind11.9 mph NE
Humidity61%
Visibility—
Dew point54°
Fri, 1473° / 58°0
Morning63°feels 62°
Afternoon73°feels 73°
Evening68°feels 68°
Overnight64°feels 63°
73 °
Zion, Friday, 14 August
Clear. High 73°, low 58°.
Pressure30.12 inHg
Wind7.2 mph E
Humidity58%
Visibility—
Dew point56°
Sat, 1573° / 60°0
Morning68°feels 67°
Afternoon72°feels 72°
Evening66°feels 66°
Overnight61°feels 61°
73 °
Zion, Saturday, 15 August
Overcast. High 73°, low 60°.
Pressure30.30 inHg
Wind8.9 mph E
Humidity55%
Visibility—
Dew point55°
Sun, 1673° / 59°0
Morning67°feels 67°
Afternoon72°feels 72°
Evening68°feels 68°
Overnight66°feels 66°
73 °
Zion, Sunday, 16 August
Overcast. High 73°, low 59°.
Pressure30.15 inHg
Wind6.3 mph SE
Humidity62%
Visibility—
Dew point58°
Mon, 1779° / 64°0
Morning68°feels 68°
Afternoon77°feels 77°
Evening73°feels 74°
Overnight68°feels 69°
79 °
Zion, Monday, 17 August
Mostly clear. High 79°, low 64°.
Pressure30.03 inHg
Wind6.5 mph SW
Humidity63%
Visibility—
Dew point62°
Tue, 1882° / 67°0
Morning71°feels 72°
Afternoon80°feels 82°
Evening77°feels 78°
Overnight72°feels 73°
82 °
Zion, Tuesday, 18 August
Overcast. High 82°, low 67°.
Pressure29.94 inHg
Wind12.6 mph SW
Humidity62%
Visibility—
Dew point65°
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 Zion, 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.