As of 18:25 CDT

Weather in Harristown, IL

72°Current weather

Harristown, Monday, 26 October, 18:25

Clear. Feels like 70°. High 73°, low 49°.

Pressure30.24 inHg
Wind0 mph N
Humidity43%
Visibility6.2 mi
Dew point48°
Tue, 2773° / 49°0Overcast
73 °Overcast

Harristown, Tuesday, 27 October

Overcast. High 73°, low 49°.

Pressure30.24 inHg
Wind7.2 mph S
Humidity51%
Visibility6.2 mi
Dew point50°
Wed, 2875° / 54°0Clear
75 °Clear

Harristown, Wednesday, 28 October

Clear. High 75°, low 54°.

Pressure30.21 inHg
Wind8.8 mph S
Humidity51%
Visibility6.2 mi
Dew point52°
Thu, 2977° / 57°0.03Light rain
77 °Light rain

Harristown, Thursday, 29 October

Light rain. High 77°, low 57°.

Pressure30.12 inHg
Wind10.2 mph SW
Humidity54%
Visibility6.2 mi
Dew point56°
Fri, 3073° / 56°0Overcast
73 °Overcast

Harristown, Friday, 30 October

Overcast. High 73°, low 56°.

Pressure30.21 inHg
Wind6.3 mph SE
Humidity72%
Visibility5.0 mi
Dew point58°
Sat, 3171° / 60°0.01Light rain
71 °Light rain

Harristown, Saturday, 31 October

Light rain. High 71°, low 60°.

Pressure30.15 inHg
Wind9.9 mph SE
Humidity62%
Visibility—
Dew point56°
Sun, 0170° / 57°0.15Light rain
70 °Light rain

Harristown, Sunday, 1 November

Light rain. High 70°, low 57°.

Pressure29.94 inHg
Wind9.9 mph NW
Humidity67%
Visibility—
Dew point55°
Mon, 0264° / 54°0.13Light rain
64 °Light rain

Harristown, Monday, 2 November

Light rain. High 64°, low 54°.

Pressure29.85 inHg
Wind14.9 mph E
Humidity72%
Visibility—
Dew point51°
Tue, 0358° / 47°1.26Rain
58 °Rain

Harristown, Tuesday, 3 November

Rain. High 58°, low 47°.

Pressure29.53 inHg
Wind19.8 mph E
Humidity83%
Visibility—
Dew point46°
Wed, 0447° / 42°0.01Light rain
47 °Light rain

Harristown, Wednesday, 4 November

Light rain. High 47°, low 42°.

Pressure29.85 inHg
Wind13.3 mph NW
Humidity85%
Visibility—
Dew point42°
Thu, 0548° / 44°0.01Light rain
48 °Light rain

Harristown, Thursday, 5 November

Light rain. High 48°, low 44°.

Pressure30.03 inHg
Wind13.1 mph N
Humidity78%
Visibility—
Dew point41°
Fri, 0655° / 38°0Clear
55 °Clear

Harristown, Friday, 6 November

Clear. High 55°, low 38°.

Pressure30.18 inHg
Wind6.5 mph N
Humidity45%
Visibility—
Dew point30°
Sat, 0759° / 41°0Partly cloudy
59 °Partly cloudy

Harristown, Saturday, 7 November

Partly cloudy. High 59°, low 41°.

Pressure30.12 inHg
Wind14.1 mph S
Humidity44%
Visibility—
Dew point34°
Sun, 0864° / 51°0Overcast
64 °Overcast

Harristown, Sunday, 8 November

Overcast. High 64°, low 51°.

Pressure29.91 inHg
Wind20 mph S
Humidity48%
Visibility—
Dew point41°
Mon, 0962° / 52°0.13Light rain
62 °Light rain

Harristown, Monday, 9 November

Light rain. High 62°, low 52°.

Pressure29.80 inHg
Wind11.6 mph SW
Humidity65%
Visibility—
Dew point49°
Tue, 1055° / 48°0.09Light rain
55 °Light rain

Harristown, Tuesday, 10 November

Light rain. High 55°, low 48°.

Pressure29.77 inHg
Wind16.2 mph NW
Humidity69%
Visibility—
Dew point41°

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.