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As of 15:26 CDT

Weather in Harristown, IL

73°Current weather

Harristown, Friday, 23 October, 15:26

Clear. Feels like 72°. High 73°, low 47°.

Pressure30.24 inHg
Wind3.4 mph S
Humidity35%
Visibility6.2 mi
Dew point44°
Sat, 2472° / 47°0Overcast
72 °Overcast

Harristown, Saturday, 24 October

Overcast. High 72°, low 47°.

Pressure30.36 inHg
Wind6.3 mph SE
Humidity49%
Visibility6.2 mi
Dew point48°
Sun, 2573° / 47°0Overcast
73 °Overcast

Harristown, Sunday, 25 October

Overcast. High 73°, low 47°.

Pressure30.42 inHg
Wind4.6 mph S
Humidity50%
Visibility6.2 mi
Dew point50°
Mon, 2673° / 51°0Overcast
73 °Overcast

Harristown, Monday, 26 October

Overcast. High 73°, low 51°.

Pressure30.33 inHg
Wind2.3 mph SE
Humidity49%
Visibility6.2 mi
Dew point51°
Tue, 2771° / 52°0Overcast
71 °Overcast

Harristown, Tuesday, 27 October

Overcast. High 71°, low 52°.

Pressure30.24 inHg
Wind6.1 mph SE
Humidity57%
Visibility6.2 mi
Dew point51°
Wed, 2873° / 55°0Mostly clear
73 °Mostly clear

Harristown, Wednesday, 28 October

Mostly clear. High 73°, low 55°.

Pressure30.12 inHg
Wind13 mph SW
Humidity44%
Visibility—
Dew point47°
Thu, 2978° / 51°0Partly cloudy
78 °Partly cloudy

Harristown, Thursday, 29 October

Partly cloudy. High 78°, low 51°.

Pressure30.18 inHg
Wind12.9 mph SW
Humidity42%
Visibility—
Dew point47°
Fri, 3070° / 60°0Overcast
70 °Overcast

Harristown, Friday, 30 October

Overcast. High 70°, low 60°.

Pressure30.15 inHg
Wind7.7 mph E
Humidity66%
Visibility—
Dew point56°
Sat, 3162° / 58°0.19Light rain
62 °Light rain

Harristown, Saturday, 31 October

Light rain. High 62°, low 58°.

Pressure30.09 inHg
Wind17 mph S
Humidity61%
Visibility—
Dew point48°
Sun, 0166° / 59°0.03Light rain
66 °Light rain

Harristown, Sunday, 1 November

Light rain. High 66°, low 59°.

Pressure30.15 inHg
Wind12.8 mph S
Humidity81%
Visibility—
Dew point58°
Mon, 0266° / 59°2.39Heavy rain
66 °Heavy rain

Harristown, Monday, 2 November

Heavy rain. High 66°, low 59°.

Pressure29.94 inHg
Wind20.7 mph S
Humidity89%
Visibility—
Dew point57°
Tue, 0368° / 49°1.09Rain
68 °Rain

Harristown, Tuesday, 3 November

Rain. High 68°, low 49°.

Pressure29.88 inHg
Wind20.6 mph SW
Humidity76%
Visibility—
Dew point59°
Wed, 0455° / 42°0Clear
55 °Clear

Harristown, Wednesday, 4 November

Clear. High 55°, low 42°.

Pressure30.42 inHg
Wind16 mph NW
Humidity39%
Visibility—
Dew point27°
Thu, 0562° / 43°0Clear
62 °Clear

Harristown, Thursday, 5 November

Clear. High 62°, low 43°.

Pressure30.15 inHg
Wind17.9 mph W
Humidity33%
Visibility—
Dew point29°
Fri, 0666° / 44°0Partly cloudy
66 °Partly cloudy

Harristown, Friday, 6 November

Partly cloudy. High 66°, low 44°.

Pressure29.97 inHg
Wind10.3 mph SW
Humidity49%
Visibility—
Dew point42°
Sat, 0759° / 53°0.04Light rain
59 °Light rain

Harristown, Saturday, 7 November

Light rain. High 59°, low 53°.

Pressure30.00 inHg
Wind11.4 mph SE
Humidity68%
Visibility—
Dew point47°

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.