10-day forecast for Harmon, IL: 39° to 88°, with precipitation expected on 5 days. The table below breaks each day into morning, afternoon, evening and overnight.
88°
Best day: Monday, October 12
64° · 0.68 in
Worst day: Thursday, October 15
Tap any day below to see morning, afternoon, evening and overnight.
Tue, 1379° / 65°0.05
Morning67°feels 68°
Afternoon78°feels 78°
Evening68°feels 68°
Overnight73°feels 74°
79 °
Harmon, Tuesday, 13 October
Light rain. High 79°, low 65°.
Pressure29.85 inHg
Wind6.4 mph W
Humidity59%
Visibility6.2 mi
Dew point58°
Wed, 1472° / 59°0.12
Morning60°feels 60°
Afternoon71°feels 71°
Evening64°feels 64°
Overnight65°feels 65°
72 °
Harmon, Wednesday, 14 October
Rain. High 72°, low 59°.
Pressure30.09 inHg
Wind7 mph NE
Humidity67%
Visibility6.2 mi
Dew point58°
Thu, 1564° / 57°0.68
Morning58°feels 58°
Afternoon64°feels 64°
Evening60°feels 60°
Overnight59°feels 59°
64 °
Harmon, Thursday, 15 October
Heavy rain. High 64°, low 57°.
Pressure30.06 inHg
Wind7.2 mph E
Humidity87%
Visibility6.2 mi
Dew point57°
Fri, 1658° / 48°0
Morning50°feels 48°
Afternoon56°feels 53°
Evening50°feels 47°
Overnight56°feels 55°
58 °
Harmon, Friday, 16 October
Overcast. High 58°, low 48°.
Pressure30.39 inHg
Wind19.1 mph N
Humidity52%
Visibility6.2 mi
Dew point38°
Sat, 1760° / 39°0
Morning45°feels 44°
Afternoon58°feels 55°
Evening51°feels 49°
Overnight46°feels 43°
60 °
Harmon, Saturday, 17 October
Clear. High 60°, low 39°.
Pressure30.47 inHg
Wind9.6 mph SW
Humidity37%
Visibility—
Dew point30°
Sun, 1860° / 42°0
Morning46°feels 41°
Afternoon57°feels 54°
Evening52°feels 49°
Overnight50°feels 47°
60 °
Harmon, Sunday, 18 October
Clear. High 60°, low 42°.
Pressure30.24 inHg
Wind17.2 mph SW
Humidity43%
Visibility—
Dew point33°
Mon, 1954° / 47°0.24
Morning51°feels 49°
Afternoon54°feels 52°
Evening52°feels 51°
Overnight51°feels 50°
54 °
Harmon, Monday, 19 October
Rain. High 54°, low 47°.
Pressure30.21 inHg
Wind11 mph S
Humidity63%
Visibility—
Dew point42°
Tue, 2063° / 53°0.16
Morning56°feels 56°
Afternoon62°feels 62°
Evening59°feels 59°
Overnight58°feels 58°
63 °
Harmon, Tuesday, 20 October
Rain. High 63°, low 53°.
Pressure30.21 inHg
Wind8 mph E
Humidity78%
Visibility—
Dew point55°
Wed, 2173° / 58°0
Morning61°feels 61°
Afternoon69°feels 69°
Evening65°feels 65°
Overnight63°feels 63°
73 °
Harmon, Wednesday, 21 October
Partly cloudy. High 73°, low 58°.
Pressure30.27 inHg
Wind11.1 mph SE
Humidity70%
Visibility—
Dew point58°
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.