10-day forecast for Walnut, IL: 37° to 77°, with precipitation expected on 7 days. The table below breaks each day into morning, afternoon, evening and overnight.
64°
Best day: Sunday, October 18
68° · 1.84 in
Worst day: Thursday, October 22
Tap any day below to see morning, afternoon, evening and overnight.
Wed, 1475° / 60°0.33
Morning61°feels 61°
Afternoon73°feels 73°
Evening62°feels 61°
Overnight65°feels 66°
75 °
Walnut, Wednesday, 14 October
Heavy rain. High 75°, low 60°.
Pressure30.09 inHg
Wind8.4 mph NE
Humidity61%
Visibility6.2 mi
Dew point56°
Thu, 1567° / 58°1.33
Morning58°feels 58°
Afternoon64°feels 64°
Evening63°feels 63°
Overnight60°feels 59°
67 °
Walnut, Thursday, 15 October
Heavy rain. High 67°, low 58°.
Pressure29.97 inHg
Wind7.9 mph E
Humidity94%
Visibility1.4 mi
Dew point59°
Fri, 1657° / 46°0.04
Morning48°feels 41°
Afternoon56°feels 54°
Evening49°feels 44°
Overnight56°feels 55°
57 °
Walnut, Friday, 16 October
Light rain. High 57°, low 46°.
Pressure30.18 inHg
Wind21.3 mph NW
Humidity60%
Visibility6.2 mi
Dew point40°
Sat, 1757° / 37°0
Morning41°feels 41°
Afternoon54°feels 51°
Evening49°feels 46°
Overnight42°feels 38°
57 °
Walnut, Saturday, 17 October
Clear. High 57°, low 37°.
Pressure30.50 inHg
Wind9 mph S
Humidity43%
Visibility—
Dew point31°
Sun, 1864° / 44°0
Morning49°feels 45°
Afternoon61°feels 59°
Evening56°feels 54°
Overnight52°feels 49°
64 °
Walnut, Sunday, 18 October
Overcast. High 64°, low 44°.
Pressure30.27 inHg
Wind14.8 mph SW
Humidity47%
Visibility—
Dew point39°
Mon, 1960° / 51°0.11
Morning54°feels 54°
Afternoon59°feels 58°
Evening57°feels 57°
Overnight55°feels 55°
60 °
Walnut, Monday, 19 October
Light rain. High 60°, low 51°.
Pressure30.18 inHg
Wind9.2 mph SW
Humidity79%
Visibility—
Dew point52°
Tue, 2059° / 55°0.09
Morning57°feels 56°
Afternoon58°feels 57°
Evening57°feels 57°
Overnight57°feels 57°
59 °
Walnut, Tuesday, 20 October
Light rain. High 59°, low 55°.
Pressure30.27 inHg
Wind8.2 mph SE
Humidity78%
Visibility—
Dew point51°
Wed, 2165° / 58°0.08
Morning60°feels 61°
Afternoon65°feels 65°
Evening64°feels 64°
Overnight63°feels 63°
65 °
Walnut, Wednesday, 21 October
Light rain. High 65°, low 58°.
Pressure30.18 inHg
Wind10.9 mph SE
Humidity87%
Visibility—
Dew point60°
Thu, 2268° / 64°1.84
Morning65°feels 66°
Afternoon67°feels 68°
Evening66°feels 67°
Overnight67°feels 67°
68 °
Walnut, Thursday, 22 October
Heavy rain. High 68°, low 64°.
Pressure30.00 inHg
Wind16.4 mph S
Humidity83%
Visibility—
Dew point62°
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 Walnut, 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.