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As of 17:38 CDT

Weather in Harco, IL

88°Current weather

Harco, Saturday, 8 August, 17:38

Overcast. Feels like 98°. High 89°, low 72°.

Pressure30.00 inHg
Wind7.8 mph SW
Humidity66%
Visibility6.2 mi
Dew point75°
Sun, 0992° / 73°0Clear
92 °Clear

Harco, Sunday, 9 August

Clear. High 92°, low 73°.

Pressure30.03 inHg
Wind12.2 mph S
Humidity47%
Visibility6.2 mi
Dew point67°
Mon, 1098° / 76°0Clear
98 °Clear

Harco, Monday, 10 August

Clear. High 98°, low 76°.

Pressure30.00 inHg
Wind14.8 mph SW
Humidity44%
Visibility6.2 mi
Dew point69°
Tue, 11100° / 75°0Light rain
100 °Light rain

Harco, Tuesday, 11 August

Light rain. High 100°, low 75°.

Pressure29.91 inHg
Wind16.3 mph SW
Humidity37%
Visibility6.2 mi
Dew point67°
Wed, 1299° / 79°0Overcast
99 °Overcast

Harco, Wednesday, 12 August

Overcast. High 99°, low 79°.

Pressure29.83 inHg
Wind15.9 mph W
Humidity37%
Visibility6.2 mi
Dew point66°
Thu, 1382° / 72°0.37Rain
82 °Rain

Harco, Thursday, 13 August

Rain. High 82°, low 72°.

Pressure29.88 inHg
Wind11.6 mph S
Humidity75%
Visibility—
Dew point71°
Fri, 1481° / 64°0.31Rain
81 °Rain

Harco, Friday, 14 August

Rain. High 81°, low 64°.

Pressure30.09 inHg
Wind12.1 mph NE
Humidity52%
Visibility—
Dew point60°
Sat, 1581° / 57°0Partly cloudy
81 °Partly cloudy

Harco, Saturday, 15 August

Partly cloudy. High 81°, low 57°.

Pressure30.27 inHg
Wind8.8 mph E
Humidity38%
Visibility—
Dew point49°
Sun, 1687° / 60°0Overcast
87 °Overcast

Harco, Sunday, 16 August

Overcast. High 87°, low 60°.

Pressure30.21 inHg
Wind7.2 mph S
Humidity36%
Visibility—
Dew point51°
Mon, 1789° / 70°0.23Light rain
89 °Light rain

Harco, Monday, 17 August

Light rain. High 89°, low 70°.

Pressure30.00 inHg
Wind18.9 mph SW
Humidity58%
Visibility—
Dew point69°
Tue, 1893° / 73°0Overcast
93 °Overcast

Harco, Tuesday, 18 August

Overcast. High 93°, low 73°.

Pressure29.94 inHg
Wind12.4 mph S
Humidity51%
Visibility—
Dew point69°
Wed, 1993° / 72°0Mostly clear
93 °Mostly clear

Harco, Wednesday, 19 August

Mostly clear. High 93°, low 72°.

Pressure29.91 inHg
Wind8.2 mph SW
Humidity46%
Visibility—
Dew point66°
Thu, 2092° / 75°0.37Rain
92 °Rain

Harco, Thursday, 20 August

Rain. High 92°, low 75°.

Pressure29.85 inHg
Wind14.3 mph NW
Humidity52%
Visibility—
Dew point69°
Fri, 2183° / 71°0.19Light rain
83 °Light rain

Harco, Friday, 21 August

Light rain. High 83°, low 71°.

Pressure29.88 inHg
Wind8.5 mph NE
Humidity73%
Visibility—
Dew point72°
Sat, 2288° / 67°0Overcast
88 °Overcast

Harco, Saturday, 22 August

Overcast. High 88°, low 67°.

Pressure29.91 inHg
Wind8.6 mph NE
Humidity46%
Visibility—
Dew point61°
Sun, 2380° / 64°0Overcast
80 °Overcast

Harco, Sunday, 23 August

Overcast. High 80°, low 64°.

Pressure30.09 inHg
Wind12.7 mph NE
Humidity57%
Visibility—
Dew point59°

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.