10-day forecast for Harmon, IL: 31° to 83°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.
83°
Best day: Monday, October 12
60° · 1.75 in
Worst day: Thursday, October 15
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1283° / 63°0
Morning66°feels 65°
Afternoon82°feels 84°
Evening76°feels 77°
Overnight64°feels 64°
83 °
Harmon, Monday, 12 October
Partly cloudy. High 83°, low 63°.
Pressure29.83 inHg
Wind11.8 mph SW
Humidity59%
Visibility6.2 mi
Dew point63°
Tue, 1379° / 67°0.06
Morning69°feels 70°
Afternoon79°feels 79°
Evening71°feels 72°
Overnight73°feels 74°
79 °
Harmon, Tuesday, 13 October
Rain. High 79°, low 67°.
Pressure29.85 inHg
Wind7.2 mph W
Humidity69%
Visibility6.2 mi
Dew point66°
Wed, 1472° / 61°0.48
Morning62°feels 62°
Afternoon72°feels 72°
Evening65°feels 64°
Overnight66°feels 67°
72 °
Harmon, Wednesday, 14 October
Heavy rain. High 72°, low 61°.
Pressure30.06 inHg
Wind6.8 mph NE
Humidity62%
Visibility6.2 mi
Dew point56°
Thu, 1560° / 56°1.75
Morning57°feels 56°
Afternoon58°feels 58°
Evening59°feels 59°
Overnight58°feels 58°
60 °
Harmon, Thursday, 15 October
Rain. High 60°, low 56°.
Pressure30.09 inHg
Wind9.1 mph NE
Humidity95%
Visibility1.5 mi
Dew point56°
Fri, 1660° / 48°0
Morning53°feels 51°
Afternoon58°feels 56°
Evening53°feels 51°
Overnight49°feels 46°
60 °
Harmon, Friday, 16 October
Overcast. High 60°, low 48°.
Pressure30.39 inHg
Wind18 mph N
Humidity48%
Visibility—
Dew point38°
Sat, 1744° / 32°0
Morning35°feels 27°
Afternoon41°feels 35°
Evening37°feels 33°
Overnight35°feels 33°
44 °
Harmon, Saturday, 17 October
Clear. High 44°, low 32°.
Pressure30.56 inHg
Wind12.7 mph NW
Humidity32%
Visibility—
Dew point13°
Sun, 1852° / 31°0
Morning37°feels 29°
Afternoon49°feels 42°
Evening47°feels 41°
Overnight43°feels 36°
52 °
Harmon, Sunday, 18 October
Partly cloudy. High 52°, low 31°.
Pressure30.42 inHg
Wind19.4 mph S
Humidity36%
Visibility—
Dew point21°
Mon, 1961° / 41°0
Morning46°feels 41°
Afternoon57°feels 55°
Evening52°feels 50°
Overnight49°feels 46°
61 °
Harmon, Monday, 19 October
Partly cloudy. High 61°, low 41°.
Pressure30.30 inHg
Wind15.2 mph SW
Humidity45%
Visibility—
Dew point35°
Tue, 2064° / 45°0
Morning50°feels 47°
Afternoon62°feels 59°
Evening55°feels 53°
Overnight51°feels 49°
64 °
Harmon, Tuesday, 20 October
Partly cloudy. High 64°, low 45°.
Pressure30.30 inHg
Wind9.6 mph S
Humidity39%
Visibility—
Dew point35°
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.