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As of 15:32 CDT

Weather in Harmon, IL

81°Current weather

Harmon, Saturday, 8 August, 15:32

Clear. Feels like 83°. High 82°, low 68°.

Pressure30.00 inHg
Wind5.2 mph NW
Humidity63%
Visibility6.2 mi
Dew point68°
Sun, 0987° / 64°0.11Light rain
87 °Light rain

Harmon, Sunday, 9 August

Light rain. High 87°, low 64°.

Pressure29.91 inHg
Wind7.9 mph E
Humidity90%
Visibility6.2 mi
Dew point74°
Mon, 1084° / 72°0Overcast
84 °Overcast

Harmon, Monday, 10 August

Overcast. High 84°, low 72°.

Pressure29.88 inHg
Wind9.6 mph SW
Humidity70%
Visibility6.2 mi
Dew point73°
Tue, 1187° / 73°0.02Light rain
87 °Light rain

Harmon, Tuesday, 11 August

Light rain. High 87°, low 73°.

Pressure29.80 inHg
Wind8 mph W
Humidity76%
Visibility6.2 mi
Dew point73°
Wed, 1280° / 67°0.04Light rain
80 °Light rain

Harmon, Wednesday, 12 August

Light rain. High 80°, low 67°.

Pressure29.85 inHg
Wind6.5 mph E
Humidity97%
Visibility6.2 mi
Dew point68°
Thu, 1373° / 61°0.01Light rain
73 °Light rain

Harmon, Thursday, 13 August

Light rain. High 73°, low 61°.

Pressure29.94 inHg
Wind12.4 mph NE
Humidity74%
Visibility—
Dew point63°
Fri, 1474° / 55°0Clear
74 °Clear

Harmon, Friday, 14 August

Clear. High 74°, low 55°.

Pressure30.18 inHg
Wind6.9 mph NE
Humidity63%
Visibility—
Dew point57°
Sat, 1574° / 55°0Overcast
74 °Overcast

Harmon, Saturday, 15 August

Overcast. High 74°, low 55°.

Pressure30.30 inHg
Wind7.8 mph SE
Humidity61%
Visibility—
Dew point56°
Sun, 1676° / 57°0Overcast
76 °Overcast

Harmon, Sunday, 16 August

Overcast. High 76°, low 57°.

Pressure30.15 inHg
Wind11.4 mph S
Humidity67%
Visibility—
Dew point61°
Mon, 1780° / 66°0Overcast
80 °Overcast

Harmon, Monday, 17 August

Overcast. High 80°, low 66°.

Pressure29.97 inHg
Wind7 mph SE
Humidity81%
Visibility—
Dew point71°
Tue, 1883° / 70°0Partly cloudy
83 °Partly cloudy

Harmon, Tuesday, 18 August

Partly cloudy. High 83°, low 70°.

Pressure30.03 inHg
Wind7.7 mph SE
Humidity67%
Visibility—
Dew point69°
Wed, 1983° / 67°0.31Rain
83 °Rain

Harmon, Wednesday, 19 August

Rain. High 83°, low 67°.

Pressure29.91 inHg
Wind9.2 mph S
Humidity77%
Visibility—
Dew point71°
Thu, 2078° / 66°0.07Light rain
78 °Light rain

Harmon, Thursday, 20 August

Light rain. High 78°, low 66°.

Pressure29.91 inHg
Wind10.2 mph N
Humidity76%
Visibility—
Dew point65°
Fri, 2180° / 62°0.01Light rain
80 °Light rain

Harmon, Friday, 21 August

Light rain. High 80°, low 62°.

Pressure29.97 inHg
Wind5.5 mph S
Humidity63%
Visibility—
Dew point64°
Sat, 2273° / 56°0.02Light rain
73 °Light rain

Harmon, Saturday, 22 August

Light rain. High 73°, low 56°.

Pressure29.94 inHg
Wind16.6 mph NE
Humidity81%
Visibility—
Dew point66°
Sun, 2368° / 46°0Clear
68 °Clear

Harmon, Sunday, 23 August

Clear. High 68°, low 46°.

Pressure30.24 inHg
Wind11.7 mph E
Humidity55%
Visibility—
Dew point47°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Harmon, IL are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Harmon, IL since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.