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As of 16:35 CDT

Weather in Harco, IL

88°Current weather

Harco, Friday, 9 October, 16:35

Clear. Feels like 84°. High 88°, low 52°.

Pressure30.03 inHg
Wind9.2 mph SE
Humidity22%
Visibility6.2 mi
Dew point44°
Sat, 1074° / 54°0.09Rain
74 °Rain

Harco, Saturday, 10 October

Rain. High 74°, low 54°.

Pressure30.06 inHg
Wind6.6 mph E
Humidity53%
Visibility6.2 mi
Dew point52°
Sun, 1181° / 53°0Clear
81 °Clear

Harco, Sunday, 11 October

Clear. High 81°, low 53°.

Pressure29.97 inHg
Wind7.7 mph NW
Humidity58%
Visibility6.2 mi
Dew point59°
Mon, 1289° / 64°0Clear
89 °Clear

Harco, Monday, 12 October

Clear. High 89°, low 64°.

Pressure29.97 inHg
Wind10.6 mph SW
Humidity41%
Visibility6.2 mi
Dew point59°
Tue, 1390° / 70°0Clear
90 °Clear

Harco, Tuesday, 13 October

Clear. High 90°, low 70°.

Pressure29.91 inHg
Wind10.3 mph SW
Humidity49%
Visibility6.2 mi
Dew point64°
Wed, 1476° / 71°0.32Rain
76 °Rain

Harco, Wednesday, 14 October

Rain. High 76°, low 71°.

Pressure30.00 inHg
Wind9.6 mph W
Humidity90%
Visibility—
Dew point73°
Thu, 1593° / 68°0.09Light rain
93 °Light rain

Harco, Thursday, 15 October

Light rain. High 93°, low 68°.

Pressure29.94 inHg
Wind18.1 mph SW
Humidity37%
Visibility—
Dew point60°
Fri, 1672° / 56°0.08Light rain
72 °Light rain

Harco, Friday, 16 October

Light rain. High 72°, low 56°.

Pressure30.12 inHg
Wind19.4 mph SW
Humidity36%
Visibility—
Dew point38°
Sat, 1753° / 40°0Clear
53 °Clear

Harco, Saturday, 17 October

Clear. High 53°, low 40°.

Pressure30.36 inHg
Wind20.1 mph NW
Humidity35%
Visibility—
Dew point25°
Sun, 1857° / 34°0Overcast
57 °Overcast

Harco, Sunday, 18 October

Overcast. High 57°, low 34°.

Pressure30.47 inHg
Wind7.2 mph NE
Humidity36%
Visibility—
Dew point25°
Mon, 1962° / 38°0Overcast
62 °Overcast

Harco, Monday, 19 October

Overcast. High 62°, low 38°.

Pressure30.42 inHg
Wind6.7 mph E
Humidity25%
Visibility—
Dew point21°
Tue, 2069° / 43°0Clear
69 °Clear

Harco, Tuesday, 20 October

Clear. High 69°, low 43°.

Pressure30.39 inHg
Wind5.5 mph E
Humidity23%
Visibility—
Dew point25°
Wed, 2172° / 45°0Clear
72 °Clear

Harco, Wednesday, 21 October

Clear. High 72°, low 45°.

Pressure30.33 inHg
Wind6 mph SE
Humidity22%
Visibility—
Dew point26°
Thu, 2277° / 49°0Clear
77 °Clear

Harco, Thursday, 22 October

Clear. High 77°, low 49°.

Pressure30.15 inHg
Wind7.1 mph SW
Humidity24%
Visibility—
Dew point32°
Fri, 2378° / 52°0Clear
78 °Clear

Harco, Friday, 23 October

Clear. High 78°, low 52°.

Pressure30.06 inHg
Wind7.5 mph S
Humidity25%
Visibility—
Dew point35°
Sat, 2479° / 53°0Mostly clear
79 °Mostly clear

Harco, Saturday, 24 October

Mostly clear. High 79°, low 53°.

Pressure30.09 inHg
Wind9.7 mph SW
Humidity22%
Visibility—
Dew point33°

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 Harco, 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 Harco, 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.