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As of 13:09 CDT

Weather in Harco, IL

71°Current weather

Harco, Saturday, 10 October, 13:09

Overcast. Feels like 71°. High 73°, low 56°.

Pressure30.06 inHg
Wind10.4 mph E
Humidity53%
Visibility6.2 mi
Dew point54°
Sun, 1183° / 51°0Clear
83 °Clear

Harco, Sunday, 11 October

Clear. High 83°, low 51°.

Pressure30.00 inHg
Wind6.2 mph NW
Humidity52%
Visibility6.2 mi
Dew point55°
Mon, 1289° / 58°0Clear
89 °Clear

Harco, Monday, 12 October

Clear. High 89°, low 58°.

Pressure29.97 inHg
Wind11 mph SW
Humidity39%
Visibility6.2 mi
Dew point58°
Tue, 1390° / 68°0Clear
90 °Clear

Harco, Tuesday, 13 October

Clear. High 90°, low 68°.

Pressure29.94 inHg
Wind11.2 mph SW
Humidity42%
Visibility6.2 mi
Dew point61°
Wed, 1478° / 71°0.45Rain
78 °Rain

Harco, Wednesday, 14 October

Rain. High 78°, low 71°.

Pressure30.03 inHg
Wind5.1 mph W
Humidity96%
Visibility6.2 mi
Dew point72°
Thu, 1576° / 65°0.13Light rain
76 °Light rain

Harco, Thursday, 15 October

Light rain. High 76°, low 65°.

Pressure30.15 inHg
Wind10.2 mph E
Humidity75%
Visibility—
Dew point66°
Fri, 1668° / 51°0.71Rain
68 °Rain

Harco, Friday, 16 October

Rain. High 68°, low 51°.

Pressure30.03 inHg
Wind20.8 mph W
Humidity43%
Visibility—
Dew point42°
Sat, 1746° / 38°0Overcast
46 °Overcast

Harco, Saturday, 17 October

Overcast. High 46°, low 38°.

Pressure30.36 inHg
Wind19.8 mph NW
Humidity42%
Visibility—
Dew point22°
Sun, 1852° / 31°0Clear
52 °Clear

Harco, Sunday, 18 October

Clear. High 52°, low 31°.

Pressure30.50 inHg
Wind7.3 mph NW
Humidity40%
Visibility—
Dew point24°
Mon, 1959° / 35°0Clear
59 °Clear

Harco, Monday, 19 October

Clear. High 59°, low 35°.

Pressure30.45 inHg
Wind7.6 mph S
Humidity31%
Visibility—
Dew point24°
Tue, 2065° / 41°0Overcast
65 °Overcast

Harco, Tuesday, 20 October

Overcast. High 65°, low 41°.

Pressure30.33 inHg
Wind10.3 mph S
Humidity36%
Visibility—
Dew point34°
Wed, 2165° / 49°0.28Rain
65 °Rain

Harco, Wednesday, 21 October

Rain. High 65°, low 49°.

Pressure30.09 inHg
Wind16.3 mph S
Humidity51%
Visibility—
Dew point44°
Thu, 2268° / 47°0Clear
68 °Clear

Harco, Thursday, 22 October

Clear. High 68°, low 47°.

Pressure30.24 inHg
Wind6.7 mph SW
Humidity45%
Visibility—
Dew point41°
Fri, 2371° / 50°0Mostly clear
71 °Mostly clear

Harco, Friday, 23 October

Mostly clear. High 71°, low 50°.

Pressure30.18 inHg
Wind6.8 mph SW
Humidity40%
Visibility—
Dew point42°
Sat, 2471° / 48°0Clear
71 °Clear

Harco, Saturday, 24 October

Clear. High 71°, low 48°.

Pressure30.18 inHg
Wind6.2 mph SE
Humidity33%
Visibility—
Dew point36°
Sun, 2570° / 54°0.04Light rain
70 °Light rain

Harco, Sunday, 25 October

Light rain. High 70°, low 54°.

Pressure29.85 inHg
Wind15.5 mph SW
Humidity44%
Visibility—
Dew point45°

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.