10-day forecast for Harmon, IL: 35° to 73°, with precipitation expected on 0 days. The table below breaks each day into morning, afternoon, evening and overnight.
73°
Best day: Saturday, October 24
55°
Worst day: Friday, October 16
Tap any day below to see morning, afternoon, evening and overnight.
Sat, 1755° / 35°0
Morning37°feels 37°
Afternoon54°feels 51°
Evening46°feels 42°
Overnight41°feels 36°
55 °
Harmon, Saturday, 17 October
Clear. High 55°, low 35°.
Pressure30.56 inHg
Wind5.8 mph SW
Humidity46%
Visibility6.2 mi
Dew point30°
Sun, 1862° / 42°0
Morning43°feels 38°
Afternoon62°feels 60°
Evening52°feels 50°
Overnight43°feels 38°
62 °
Harmon, Sunday, 18 October
Clear. High 62°, low 42°.
Pressure30.42 inHg
Wind13.5 mph SW
Humidity50%
Visibility6.2 mi
Dew point40°
Mon, 1965° / 42°0
Morning43°feels 42°
Afternoon64°feels 63°
Evening53°feels 51°
Overnight46°feels 43°
65 °
Harmon, Monday, 19 October
Mostly clear. High 65°, low 42°.
Pressure30.39 inHg
Wind4.9 mph S
Humidity55%
Visibility6.2 mi
Dew point44°
Tue, 2067° / 45°0
Morning48°feels 48°
Afternoon66°feels 65°
Evening55°feels 53°
Overnight46°feels 46°
67 °
Harmon, Tuesday, 20 October
Clear. High 67°, low 45°.
Pressure30.36 inHg
Wind4.1 mph SE
Humidity52%
Visibility6.2 mi
Dew point44°
Wed, 2169° / 46°0
Morning52°feels 52°
Afternoon67°feels 65°
Evening59°feels 58°
Overnight53°feels 52°
69 °
Harmon, Wednesday, 21 October
Partly cloudy. High 69°, low 46°.
Pressure30.27 inHg
Wind5.9 mph S
Humidity46%
Visibility—
Dew point44°
Thu, 2266° / 52°0
Morning57°feels 56°
Afternoon66°feels 65°
Evening63°feels 62°
Overnight61°feels 60°
66 °
Harmon, Thursday, 22 October
Overcast. High 66°, low 52°.
Pressure30.18 inHg
Wind6 mph SE
Humidity54%
Visibility—
Dew point47°
Fri, 2372° / 56°0
Morning60°feels 58°
Afternoon70°feels 69°
Evening63°feels 61°
Overnight60°feels 59°
72 °
Harmon, Friday, 23 October
Mostly clear. High 72°, low 56°.
Pressure30.21 inHg
Wind9.7 mph S
Humidity36%
Visibility—
Dew point41°
Sat, 2473° / 56°0
Morning60°feels 58°
Afternoon70°feels 68°
Evening64°feels 62°
Overnight60°feels 58°
73 °
Harmon, Saturday, 24 October
Overcast. High 73°, low 56°.
Pressure30.18 inHg
Wind13.2 mph S
Humidity39%
Visibility—
Dew point43°
Sun, 2558° / 46°0
Morning49°feels 46°
Afternoon56°feels 54°
Evening51°feels 48°
Overnight47°feels 43°
58 °
Harmon, Sunday, 25 October
Overcast. High 58°, low 46°.
Pressure30.36 inHg
Wind11.5 mph N
Humidity49%
Visibility—
Dew point36°
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 Harmon, 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.