10-day forecast for Harmon, IL: 35° to 70°, with precipitation expected on 0 days. The table below breaks each day into morning, afternoon, evening and overnight.
70°
Best day: Saturday, October 24
54°
Worst day: Monday, October 26
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 1863° / 42°0
Morning44°feels 39°
Afternoon61°feels 59°
Evening52°feels 50°
Overnight44°feels 39°
63 °
Harmon, Sunday, 18 October
Clear. High 63°, low 42°.
Pressure30.42 inHg
Wind13 mph S
Humidity49%
Visibility6.2 mi
Dew point39°
Mon, 1965° / 42°0
Morning44°feels 42°
Afternoon64°feels 62°
Evening53°feels 51°
Overnight47°feels 44°
65 °
Harmon, Monday, 19 October
Partly cloudy. High 65°, low 42°.
Pressure30.39 inHg
Wind3.6 mph S
Humidity57%
Visibility6.2 mi
Dew point45°
Tue, 2066° / 44°0
Morning46°feels 44°
Afternoon66°feels 64°
Evening53°feels 52°
Overnight47°feels 46°
66 °
Harmon, Tuesday, 20 October
Clear. High 66°, low 44°.
Pressure30.39 inHg
Wind4.6 mph SE
Humidity49%
Visibility6.2 mi
Dew point44°
Wed, 2167° / 44°0
Morning48°feels 48°
Afternoon67°feels 65°
Evening57°feels 56°
Overnight47°feels 45°
67 °
Harmon, Wednesday, 21 October
Clear. High 67°, low 44°.
Pressure30.27 inHg
Wind3 mph S
Humidity57%
Visibility6.2 mi
Dew point47°
Thu, 2269° / 48°0
Morning53°feels 53°
Afternoon66°feels 65°
Evening60°feels 59°
Overnight54°feels 54°
69 °
Harmon, Thursday, 22 October
Clear. High 69°, low 48°.
Pressure30.27 inHg
Wind6 mph E
Humidity52%
Visibility—
Dew point47°
Fri, 2369° / 51°0
Morning55°feels 54°
Afternoon65°feels 64°
Evening60°feels 59°
Overnight57°feels 56°
69 °
Harmon, Friday, 23 October
Overcast. High 69°, low 51°.
Pressure30.30 inHg
Wind10.8 mph SE
Humidity53%
Visibility—
Dew point46°
Sat, 2470° / 56°0
Morning60°feels 58°
Afternoon69°feels 67°
Evening63°feels 61°
Overnight62°feels 60°
70 °
Harmon, Saturday, 24 October
Overcast. High 70°, low 56°.
Pressure30.18 inHg
Wind16.1 mph S
Humidity38%
Visibility—
Dew point41°
Sun, 2559° / 42°0
Morning47°feels 43°
Afternoon47°feels 43°
Evening46°feels 42°
Overnight43°feels 39°
59 °
Harmon, Sunday, 25 October
Overcast. High 59°, low 42°.
Pressure30.42 inHg
Wind12.6 mph NW
Humidity62%
Visibility—
Dew point35°
Mon, 2654° / 37°0
Morning41°feels 40°
Afternoon51°feels 48°
Evening46°feels 44°
Overnight43°feels 40°
54 °
Harmon, Monday, 26 October
Clear. High 54°, low 37°.
Pressure30.42 inHg
Wind6.8 mph W
Humidity39%
Visibility—
Dew point26°
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.