10-day forecast for Harmon, IL: 35° to 71°, with precipitation expected on 0 days. The table below breaks each day into morning, afternoon, evening and overnight.
71°
Best day: Friday, October 23
53°
Worst day: Saturday, October 17
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 1862° / 41°0
Morning42°feels 37°
Afternoon61°feels 59°
Evening52°feels 50°
Overnight42°feels 37°
62 °
Harmon, Sunday, 18 October
Clear. High 62°, low 41°.
Pressure30.42 inHg
Wind13 mph SW
Humidity51%
Visibility6.2 mi
Dew point40°
Mon, 1965° / 42°0
Morning43°feels 41°
Afternoon64°feels 62°
Evening53°feels 52°
Overnight45°feels 42°
65 °
Harmon, Monday, 19 October
Clear. High 65°, low 42°.
Pressure30.39 inHg
Wind3.6 mph S
Humidity57%
Visibility6.2 mi
Dew point45°
Tue, 2066° / 43°0
Morning44°feels 44°
Afternoon66°feels 65°
Evening56°feels 55°
Overnight46°feels 45°
66 °
Harmon, Tuesday, 20 October
Clear. High 66°, low 43°.
Pressure30.36 inHg
Wind4.1 mph SE
Humidity46%
Visibility6.2 mi
Dew point43°
Wed, 2168° / 46°0
Morning50°feels 49°
Afternoon65°feels 64°
Evening58°feels 56°
Overnight48°feels 48°
68 °
Harmon, Wednesday, 21 October
Partly cloudy. High 68°, low 46°.
Pressure30.24 inHg
Wind5.3 mph SW
Humidity48%
Visibility—
Dew point44°
Thu, 2270° / 48°0
Morning54°feels 53°
Afternoon67°feels 66°
Evening60°feels 59°
Overnight55°feels 55°
70 °
Harmon, Thursday, 22 October
Clear. High 70°, low 48°.
Pressure30.27 inHg
Wind6.7 mph E
Humidity50%
Visibility—
Dew point47°
Fri, 2371° / 52°0
Morning57°feels 55°
Afternoon68°feels 66°
Evening61°feels 60°
Overnight58°feels 56°
71 °
Harmon, Friday, 23 October
Partly cloudy. High 71°, low 52°.
Pressure30.18 inHg
Wind10.1 mph S
Humidity42%
Visibility—
Dew point43°
Sat, 2469° / 57°0
Morning60°feels 58°
Afternoon68°feels 66°
Evening64°feels 62°
Overnight61°feels 59°
69 °
Harmon, Saturday, 24 October
Overcast. High 69°, low 57°.
Pressure30.09 inHg
Wind14.3 mph S
Humidity45%
Visibility—
Dew point45°
Sun, 2564° / 51°0
Morning60°feels 59°
Afternoon61°feels 59°
Evening54°feels 53°
Overnight53°feels 51°
64 °
Harmon, Sunday, 25 October
Partly cloudy. High 64°, low 51°.
Pressure30.06 inHg
Wind15.5 mph W
Humidity51%
Visibility—
Dew point43°
Mon, 2663° / 46°0
Morning50°feels 49°
Afternoon60°feels 59°
Evening56°feels 55°
Overnight53°feels 51°
63 °
Harmon, Monday, 26 October
Clear. High 63°, low 46°.
Pressure30.21 inHg
Wind8.2 mph SE
Humidity55%
Visibility—
Dew point43°
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.