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As of 04:52 CDT

Weather in Harco, IL

55°Current weather

Harco, Saturday, 10 October, 04:52

Overcast. Feels like 55°. High 76°, low 54°.

Pressure30.06 inHg
Wind0 mph N
Humidity88%
Visibility6.2 mi
Dew point51°
Sun, 1183° / 52°0Clear
83 °Clear

Harco, Sunday, 11 October

Clear. High 83°, low 52°.

Pressure30.00 inHg
Wind6.4 mph NW
Humidity54%
Visibility6.2 mi
Dew point57°
Mon, 1290° / 64°0Clear
90 °Clear

Harco, Monday, 12 October

Clear. High 90°, low 64°.

Pressure29.97 inHg
Wind11.2 mph SW
Humidity37%
Visibility6.2 mi
Dew point58°
Tue, 1390° / 68°0Clear
90 °Clear

Harco, Tuesday, 13 October

Clear. High 90°, low 68°.

Pressure29.91 inHg
Wind11.4 mph SW
Humidity38%
Visibility6.2 mi
Dew point58°
Wed, 1478° / 72°0.26Rain
78 °Rain

Harco, Wednesday, 14 October

Rain. High 78°, low 72°.

Pressure30.03 inHg
Wind8.9 mph SW
Humidity85%
Visibility—
Dew point71°
Thu, 1577° / 69°0.26Rain
77 °Rain

Harco, Thursday, 15 October

Rain. High 77°, low 69°.

Pressure30.18 inHg
Wind15.5 mph S
Humidity64%
Visibility—
Dew point60°
Fri, 1671° / 58°0.11Light rain
71 °Light rain

Harco, Friday, 16 October

Light rain. High 71°, low 58°.

Pressure30.00 inHg
Wind13.8 mph SW
Humidity49%
Visibility—
Dew point48°
Sat, 1757° / 42°0Overcast
57 °Overcast

Harco, Saturday, 17 October

Overcast. High 57°, low 42°.

Pressure30.21 inHg
Wind17.7 mph NW
Humidity45%
Visibility—
Dew point28°
Sun, 1854° / 37°0Clear
54 °Clear

Harco, Sunday, 18 October

Clear. High 54°, low 37°.

Pressure30.42 inHg
Wind15.1 mph NW
Humidity42%
Visibility—
Dew point28°
Mon, 1958° / 34°0Mostly clear
58 °Mostly clear

Harco, Monday, 19 October

Mostly clear. High 58°, low 34°.

Pressure30.39 inHg
Wind6.3 mph E
Humidity30%
Visibility—
Dew point21°
Tue, 2062° / 38°0Overcast
62 °Overcast

Harco, Tuesday, 20 October

Overcast. High 62°, low 38°.

Pressure30.33 inHg
Wind6.1 mph SE
Humidity27%
Visibility—
Dew point23°
Wed, 2170° / 43°0Mostly clear
70 °Mostly clear

Harco, Wednesday, 21 October

Mostly clear. High 70°, low 43°.

Pressure30.30 inHg
Wind7.6 mph S
Humidity28%
Visibility—
Dew point31°
Thu, 2272° / 47°0Clear
72 °Clear

Harco, Thursday, 22 October

Clear. High 72°, low 47°.

Pressure30.18 inHg
Wind12.6 mph S
Humidity30%
Visibility—
Dew point35°
Fri, 2369° / 52°0.22Rain
69 °Rain

Harco, Friday, 23 October

Rain. High 69°, low 52°.

Pressure29.97 inHg
Wind16.2 mph S
Humidity45%
Visibility—
Dew point45°
Sat, 2472° / 50°0.92Heavy rain
72 °Heavy rain

Harco, Saturday, 24 October

Heavy rain. High 72°, low 50°.

Pressure29.85 inHg
Wind14.4 mph SW
Humidity46%
Visibility—
Dew point47°
Sun, 2562° / 46°0.12Rain
62 °Rain

Harco, Sunday, 25 October

Rain. High 62°, low 46°.

Pressure29.97 inHg
Wind15 mph NW
Humidity46%
Visibility—
Dew point38°

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.