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As of 04:46 CST

Weather in Harristown, IL

63°Current weather

Harristown, Wednesday, 4 November, 04:46

Overcast. Feels like 63°. High 63°, low 54°.

Pressure29.71 inHg
Wind11.5 mph S
Humidity94%
Visibility6.2 mi
Dew point61°
Thu, 0560° / 47°0Clear
60 °Clear

Harristown, Thursday, 5 November

Clear. High 60°, low 47°.

Pressure29.83 inHg
Wind13.9 mph W
Humidity52%
Visibility6.2 mi
Dew point43°
Fri, 0652° / 41°0Overcast
52 °Overcast

Harristown, Friday, 6 November

Overcast. High 52°, low 41°.

Pressure30.15 inHg
Wind10.5 mph N
Humidity48%
Visibility6.2 mi
Dew point31°
Sat, 0751° / 34°0Overcast
51 °Overcast

Harristown, Saturday, 7 November

Overcast. High 51°, low 34°.

Pressure30.30 inHg
Wind6.2 mph NW
Humidity48%
Visibility6.2 mi
Dew point31°
Sun, 0860° / 36°0Clear
60 °Clear

Harristown, Sunday, 8 November

Clear. High 60°, low 36°.

Pressure30.21 inHg
Wind8.3 mph W
Humidity56%
Visibility—
Dew point39°
Mon, 0965° / 41°0Clear
65 °Clear

Harristown, Monday, 9 November

Clear. High 65°, low 41°.

Pressure30.18 inHg
Wind7.4 mph SW
Humidity62%
Visibility—
Dew point47°
Tue, 1062° / 42°0Clear
62 °Clear

Harristown, Tuesday, 10 November

Clear. High 62°, low 42°.

Pressure30.12 inHg
Wind7.6 mph NW
Humidity28%
Visibility—
Dew point24°
Wed, 1159° / 44°0Overcast
59 °Overcast

Harristown, Wednesday, 11 November

Overcast. High 59°, low 44°.

Pressure30.15 inHg
Wind11.9 mph N
Humidity36%
Visibility—
Dew point30°
Thu, 1255° / 38°0Clear
55 °Clear

Harristown, Thursday, 12 November

Clear. High 55°, low 38°.

Pressure30.18 inHg
Wind10 mph NW
Humidity43%
Visibility—
Dew point30°
Fri, 1360° / 38°0Clear
60 °Clear

Harristown, Friday, 13 November

Clear. High 60°, low 38°.

Pressure29.97 inHg
Wind12.2 mph W
Humidity33%
Visibility—
Dew point26°
Sat, 1464° / 43°0Clear
64 °Clear

Harristown, Saturday, 14 November

Clear. High 64°, low 43°.

Pressure30.03 inHg
Wind7.4 mph SW
Humidity46%
Visibility—
Dew point38°
Sun, 1560° / 49°0.07Light rain
60 °Light rain

Harristown, Sunday, 15 November

Light rain. High 60°, low 49°.

Pressure30.09 inHg
Wind9.1 mph SE
Humidity65%
Visibility—
Dew point46°
Mon, 1659° / 44°0Clear
59 °Clear

Harristown, Monday, 16 November

Clear. High 59°, low 44°.

Pressure30.12 inHg
Wind11.2 mph NW
Humidity56%
Visibility—
Dew point41°
Tue, 1753° / 39°0Clear
53 °Clear

Harristown, Tuesday, 17 November

Clear. High 53°, low 39°.

Pressure30.18 inHg
Wind6.5 mph NE
Humidity44%
Visibility—
Dew point29°
Wed, 1862° / 40°0Clear
62 °Clear

Harristown, Wednesday, 18 November

Clear. High 62°, low 40°.

Pressure30.00 inHg
Wind14.6 mph SW
Humidity44%
Visibility—
Dew point35°
Thu, 1957° / 44°0Clear
57 °Clear

Harristown, Thursday, 19 November

Clear. High 57°, low 44°.

Pressure30.03 inHg
Wind13.1 mph SW
Humidity33%
Visibility—
Dew point26°

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.