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As of 15:11 CDT

Weather in Harristown, IL

64°Current weather

Harristown, Saturday, 31 October, 15:11

Clear. Feels like 63°. High 65°, low 55°.

Pressure30.24 inHg
Wind9.2 mph E
Humidity52%
Visibility6.2 mi
Dew point47°
Sun, 0171° / 57°0Overcast
71 °Overcast

Harristown, Sunday, 1 November

Overcast. High 71°, low 57°.

Pressure30.30 inHg
Wind8.1 mph SE
Humidity67%
Visibility6.2 mi
Dew point54°
Mon, 0264° / 56°0Overcast
64 °Overcast

Harristown, Monday, 2 November

Overcast. High 64°, low 56°.

Pressure30.09 inHg
Wind13.3 mph SE
Humidity79%
Visibility6.2 mi
Dew point54°
Tue, 0374° / 64°0.11Light rain
74 °Light rain

Harristown, Tuesday, 3 November

Light rain. High 74°, low 64°.

Pressure29.91 inHg
Wind15.5 mph S
Humidity78%
Visibility6.2 mi
Dew point61°
Wed, 0468° / 52°0.59Rain
68 °Rain

Harristown, Wednesday, 4 November

Rain. High 68°, low 52°.

Pressure29.68 inHg
Wind9.9 mph SW
Humidity69%
Visibility6.2 mi
Dew point57°
Thu, 0560° / 49°0Overcast
60 °Overcast

Harristown, Thursday, 5 November

Overcast. High 60°, low 49°.

Pressure29.80 inHg
Wind11.7 mph W
Humidity68%
Visibility—
Dew point48°
Fri, 0658° / 52°0.01Light rain
58 °Light rain

Harristown, Friday, 6 November

Light rain. High 58°, low 52°.

Pressure29.88 inHg
Wind10.5 mph N
Humidity66%
Visibility—
Dew point46°
Sat, 0759° / 44°0Partly cloudy
59 °Partly cloudy

Harristown, Saturday, 7 November

Partly cloudy. High 59°, low 44°.

Pressure29.88 inHg
Wind7.7 mph N
Humidity44%
Visibility—
Dew point34°
Sun, 0858° / 45°0Overcast
58 °Overcast

Harristown, Sunday, 8 November

Overcast. High 58°, low 45°.

Pressure29.91 inHg
Wind13.7 mph N
Humidity36%
Visibility—
Dew point28°
Mon, 0955° / 50°0Overcast
55 °Overcast

Harristown, Monday, 9 November

Overcast. High 55°, low 50°.

Pressure30.00 inHg
Wind12.8 mph N
Humidity74%
Visibility—
Dew point47°
Tue, 1063° / 46°0Clear
63 °Clear

Harristown, Tuesday, 10 November

Clear. High 63°, low 46°.

Pressure30.09 inHg
Wind6.4 mph N
Humidity53%
Visibility—
Dew point42°
Wed, 1159° / 47°0Light rain
59 °Light rain

Harristown, Wednesday, 11 November

Light rain. High 59°, low 47°.

Pressure29.88 inHg
Wind16.9 mph NW
Humidity51%
Visibility—
Dew point40°
Thu, 1256° / 45°0Light rain
56 °Light rain

Harristown, Thursday, 12 November

Light rain. High 56°, low 45°.

Pressure30.06 inHg
Wind16.3 mph N
Humidity59%
Visibility—
Dew point41°
Fri, 1357° / 39°0Mostly clear
57 °Mostly clear

Harristown, Friday, 13 November

Mostly clear. High 57°, low 39°.

Pressure30.12 inHg
Wind9.4 mph S
Humidity37%
Visibility—
Dew point27°
Sat, 1463° / 45°0Clear
63 °Clear

Harristown, Saturday, 14 November

Clear. High 63°, low 45°.

Pressure29.97 inHg
Wind15.6 mph NW
Humidity27%
Visibility—
Dew point26°
Sun, 1554° / 42°0Overcast
54 °Overcast

Harristown, Sunday, 15 November

Overcast. High 54°, low 42°.

Pressure30.12 inHg
Wind8.9 mph N
Humidity27%
Visibility—
Dew point19°

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.