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As of 03:37 CDT

Weather in Harristown, IL

46°Current weather

Harristown, Friday, 23 October, 03:37

Clear. Feels like 45°. High 74°, low 46°.

Pressure30.24 inHg
Wind3.4 mph E
Humidity87%
Visibility6.2 mi
Dew point43°
Sat, 2473° / 48°0Overcast
73 °Overcast

Harristown, Saturday, 24 October

Overcast. High 73°, low 48°.

Pressure30.36 inHg
Wind6.6 mph S
Humidity47%
Visibility6.2 mi
Dew point48°
Sun, 2575° / 50°0Clear
75 °Clear

Harristown, Sunday, 25 October

Clear. High 75°, low 50°.

Pressure30.39 inHg
Wind5.2 mph S
Humidity44%
Visibility6.2 mi
Dew point48°
Mon, 2674° / 51°0Overcast
74 °Overcast

Harristown, Monday, 26 October

Overcast. High 74°, low 51°.

Pressure30.33 inHg
Wind2.4 mph SE
Humidity44%
Visibility6.2 mi
Dew point50°
Tue, 2772° / 52°0Overcast
72 °Overcast

Harristown, Tuesday, 27 October

Overcast. High 72°, low 52°.

Pressure30.24 inHg
Wind6.9 mph E
Humidity46%
Visibility—
Dew point47°
Wed, 2874° / 54°0Clear
74 °Clear

Harristown, Wednesday, 28 October

Clear. High 74°, low 54°.

Pressure30.06 inHg
Wind13.4 mph SW
Humidity42%
Visibility—
Dew point46°
Thu, 2976° / 58°0Overcast
76 °Overcast

Harristown, Thursday, 29 October

Overcast. High 76°, low 58°.

Pressure30.15 inHg
Wind14.9 mph S
Humidity28%
Visibility—
Dew point38°
Fri, 3065° / 58°0.24Rain
65 °Rain

Harristown, Friday, 30 October

Rain. High 65°, low 58°.

Pressure30.06 inHg
Wind14.7 mph S
Humidity51%
Visibility—
Dew point44°
Sat, 3162° / 58°0.79Rain
62 °Rain

Harristown, Saturday, 31 October

Rain. High 62°, low 58°.

Pressure29.91 inHg
Wind11.3 mph S
Humidity94%
Visibility—
Dew point59°
Sun, 0154° / 46°0.02Light rain
54 °Light rain

Harristown, Sunday, 1 November

Light rain. High 54°, low 46°.

Pressure30.03 inHg
Wind14.7 mph W
Humidity71%
Visibility—
Dew point43°
Mon, 0249° / 42°0Overcast
49 °Overcast

Harristown, Monday, 2 November

Overcast. High 49°, low 42°.

Pressure30.21 inHg
Wind16.8 mph NW
Humidity64%
Visibility—
Dew point33°
Tue, 0354° / 35°0Clear
54 °Clear

Harristown, Tuesday, 3 November

Clear. High 54°, low 35°.

Pressure30.30 inHg
Wind8.9 mph NW
Humidity40%
Visibility—
Dew point26°
Wed, 0458° / 39°0Clear
58 °Clear

Harristown, Wednesday, 4 November

Clear. High 58°, low 39°.

Pressure30.27 inHg
Wind9.4 mph NW
Humidity37%
Visibility—
Dew point28°
Thu, 0561° / 42°0Clear
61 °Clear

Harristown, Thursday, 5 November

Clear. High 61°, low 42°.

Pressure30.27 inHg
Wind7.9 mph SW
Humidity36%
Visibility—
Dew point30°
Fri, 0661° / 43°0Overcast
61 °Overcast

Harristown, Friday, 6 November

Overcast. High 61°, low 43°.

Pressure30.15 inHg
Wind9.1 mph S
Humidity33%
Visibility—
Dew point28°
Sat, 0760° / 45°0Overcast
60 °Overcast

Harristown, Saturday, 7 November

Overcast. High 60°, low 45°.

Pressure30.09 inHg
Wind4.5 mph NE
Humidity32%
Visibility—
Dew point28°

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 Harristown, 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 Harristown, 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.