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As of 13:10 CDT

Weather in Harristown, IL

73°Current weather

Harristown, Sunday, 25 October, 13:10

Clear. Feels like 72°. High 74°, low 48°.

Pressure30.39 inHg
Wind3.4 mph S
Humidity35%
Visibility6.2 mi
Dew point46°
Mon, 2673° / 50°0Overcast
73 °Overcast

Harristown, Monday, 26 October

Overcast. High 73°, low 50°.

Pressure30.33 inHg
Wind2.5 mph S
Humidity53%
Visibility6.2 mi
Dew point52°
Tue, 2771° / 50°0Overcast
71 °Overcast

Harristown, Tuesday, 27 October

Overcast. High 71°, low 50°.

Pressure30.27 inHg
Wind8 mph S
Humidity52%
Visibility6.2 mi
Dew point51°
Wed, 2873° / 55°0.03Light rain
73 °Light rain

Harristown, Wednesday, 28 October

Light rain. High 73°, low 55°.

Pressure30.21 inHg
Wind8.4 mph S
Humidity57%
Visibility6.2 mi
Dew point53°
Thu, 2977° / 57°0.01Light rain
77 °Light rain

Harristown, Thursday, 29 October

Light rain. High 77°, low 57°.

Pressure30.15 inHg
Wind10 mph SW
Humidity54%
Visibility6.2 mi
Dew point55°
Fri, 3070° / 57°0Overcast
70 °Overcast

Harristown, Friday, 30 October

Overcast. High 70°, low 57°.

Pressure30.24 inHg
Wind6.9 mph SE
Humidity72%
Visibility—
Dew point56°
Sat, 3168° / 59°0.04Light rain
68 °Light rain

Harristown, Saturday, 31 October

Light rain. High 68°, low 59°.

Pressure30.12 inHg
Wind10.1 mph W
Humidity52%
Visibility—
Dew point48°
Sun, 0167° / 59°0.55Rain
67 °Rain

Harristown, Sunday, 1 November

Rain. High 67°, low 59°.

Pressure30.03 inHg
Wind8.8 mph S
Humidity92%
Visibility—
Dew point58°
Mon, 0273° / 58°0Overcast
73 °Overcast

Harristown, Monday, 2 November

Overcast. High 73°, low 58°.

Pressure30.00 inHg
Wind16.5 mph S
Humidity54%
Visibility—
Dew point52°
Tue, 0374° / 58°0.09Light rain
74 °Light rain

Harristown, Tuesday, 3 November

Light rain. High 74°, low 58°.

Pressure29.83 inHg
Wind17 mph S
Humidity44%
Visibility—
Dew point49°
Wed, 0465° / 49°0Clear
65 °Clear

Harristown, Wednesday, 4 November

Clear. High 65°, low 49°.

Pressure29.85 inHg
Wind19.1 mph W
Humidity25%
Visibility—
Dew point26°
Thu, 0558° / 47°0Overcast
58 °Overcast

Harristown, Thursday, 5 November

Overcast. High 58°, low 47°.

Pressure29.83 inHg
Wind11.5 mph NW
Humidity52%
Visibility—
Dew point38°
Fri, 0659° / 44°0Clear
59 °Clear

Harristown, Friday, 6 November

Clear. High 59°, low 44°.

Pressure29.80 inHg
Wind12 mph NW
Humidity49%
Visibility—
Dew point37°
Sat, 0767° / 45°0.01Light rain
67 °Light rain

Harristown, Saturday, 7 November

Light rain. High 67°, low 45°.

Pressure29.68 inHg
Wind16.7 mph SE
Humidity39%
Visibility—
Dew point36°
Sun, 0862° / 48°0.09Light rain
62 °Light rain

Harristown, Sunday, 8 November

Light rain. High 62°, low 48°.

Pressure29.50 inHg
Wind20.2 mph W
Humidity49%
Visibility—
Dew point41°
Mon, 0953° / 44°0.05Light rain
53 °Light rain

Harristown, Monday, 9 November

Light rain. High 53°, low 44°.

Pressure29.94 inHg
Wind21.6 mph NW
Humidity50%
Visibility—
Dew point32°

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.