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As of 23:23 CDT

Weather in Harristown, IL

55°Current weather

Harristown, Saturday, 31 October, 23:23

Overcast. Feels like 54°. High 66°, low 55°.

Pressure30.30 inHg
Wind4.6 mph E
Humidity82%
Visibility6.2 mi
Dew point50°
Sun, 0167° / 56°0Overcast
67 °Overcast

Harristown, Sunday, 1 November

Overcast. High 67°, low 56°.

Pressure30.30 inHg
Wind8.3 mph SE
Humidity75%
Visibility6.2 mi
Dew point55°
Mon, 0267° / 57°0.01Light rain
67 °Light rain

Harristown, Monday, 2 November

Light rain. High 67°, low 57°.

Pressure30.06 inHg
Wind12.4 mph SE
Humidity84%
Visibility5.2 mi
Dew point57°
Tue, 0374° / 66°0.24Rain
74 °Rain

Harristown, Tuesday, 3 November

Rain. High 74°, low 66°.

Pressure29.85 inHg
Wind23.7 mph S
Humidity69%
Visibility6.2 mi
Dew point62°
Wed, 0465° / 59°0.68Heavy rain
65 °Heavy rain

Harristown, Wednesday, 4 November

Heavy rain. High 65°, low 59°.

Pressure29.74 inHg
Wind10.9 mph SW
Humidity61%
Visibility6.2 mi
Dew point48°
Thu, 0558° / 51°0.02Light rain
58 °Light rain

Harristown, Thursday, 5 November

Light rain. High 58°, low 51°.

Pressure29.77 inHg
Wind13.7 mph W
Humidity60%
Visibility—
Dew point43°
Fri, 0654° / 50°0.01Light rain
54 °Light rain

Harristown, Friday, 6 November

Light rain. High 54°, low 50°.

Pressure29.94 inHg
Wind12.3 mph NW
Humidity65%
Visibility—
Dew point42°
Sat, 0759° / 45°0Light rain
59 °Light rain

Harristown, Saturday, 7 November

Light rain. High 59°, low 45°.

Pressure29.71 inHg
Wind13.8 mph NW
Humidity45%
Visibility—
Dew point34°
Sun, 0852° / 43°0.01Light rain
52 °Light rain

Harristown, Sunday, 8 November

Light rain. High 52°, low 43°.

Pressure29.68 inHg
Wind19.1 mph NW
Humidity40%
Visibility—
Dew point27°
Mon, 0953° / 38°0Clear
53 °Clear

Harristown, Monday, 9 November

Clear. High 53°, low 38°.

Pressure29.94 inHg
Wind16.6 mph NW
Humidity46%
Visibility—
Dew point29°
Tue, 1054° / 40°0Overcast
54 °Overcast

Harristown, Tuesday, 10 November

Overcast. High 54°, low 40°.

Pressure30.06 inHg
Wind13.9 mph NW
Humidity47%
Visibility—
Dew point32°
Wed, 1153° / 36°0Clear
53 °Clear

Harristown, Wednesday, 11 November

Clear. High 53°, low 36°.

Pressure30.18 inHg
Wind8.8 mph NW
Humidity36%
Visibility—
Dew point23°
Thu, 1255° / 42°0.04Light rain
55 °Light rain

Harristown, Thursday, 12 November

Light rain. High 55°, low 42°.

Pressure29.94 inHg
Wind13.7 mph S
Humidity40%
Visibility—
Dew point29°
Fri, 1361° / 47°0Overcast
61 °Overcast

Harristown, Friday, 13 November

Overcast. High 61°, low 47°.

Pressure29.77 inHg
Wind10.2 mph NW
Humidity67%
Visibility—
Dew point46°
Sat, 1455° / 44°0Partly cloudy
55 °Partly cloudy

Harristown, Saturday, 14 November

Partly cloudy. High 55°, low 44°.

Pressure29.91 inHg
Wind17.2 mph NW
Humidity52%
Visibility—
Dew point36°
Sun, 1553° / 37°0Clear
53 °Clear

Harristown, Sunday, 15 November

Clear. High 53°, low 37°.

Pressure30.15 inHg
Wind7.6 mph NW
Humidity52%
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.