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As of 21:06 CST

Weather in Harristown, IL

36°Current weather

Harristown, Friday, 13 November, 21:06

Clear. Feels like 31°. High 43°, low 36°.

Pressure30.15 inHg
Wind5.7 mph NW
Humidity69%
Visibility6.2 mi
Dew point28°
Sat, 1447° / 30°0Clear
47 °Clear

Harristown, Saturday, 14 November

Clear. High 47°, low 30°.

Pressure30.30 inHg
Wind5.5 mph NW
Humidity56%
Visibility6.2 mi
Dew point26°
Sun, 1549° / 29°0Mostly clear
49 °Mostly clear

Harristown, Sunday, 15 November

Mostly clear. High 49°, low 29°.

Pressure30.47 inHg
Wind1.3 mph NW
Humidity52%
Visibility6.2 mi
Dew point29°
Mon, 1653° / 31°0Clear
53 °Clear

Harristown, Monday, 16 November

Clear. High 53°, low 31°.

Pressure30.53 inHg
Wind4.3 mph SW
Humidity47%
Visibility6.2 mi
Dew point32°
Tue, 1754° / 34°0Clear
54 °Clear

Harristown, Tuesday, 17 November

Clear. High 54°, low 34°.

Pressure30.50 inHg
Wind7.4 mph S
Humidity48%
Visibility6.2 mi
Dew point34°
Wed, 1858° / 38°0Overcast
58 °Overcast

Harristown, Wednesday, 18 November

Overcast. High 58°, low 38°.

Pressure30.36 inHg
Wind12.5 mph S
Humidity48%
Visibility—
Dew point35°
Thu, 1960° / 48°0.03Light rain
60 °Light rain

Harristown, Thursday, 19 November

Light rain. High 60°, low 48°.

Pressure30.30 inHg
Wind12 mph S
Humidity60%
Visibility—
Dew point44°
Fri, 2065° / 55°0.01Light rain
65 °Light rain

Harristown, Friday, 20 November

Light rain. High 65°, low 55°.

Pressure30.24 inHg
Wind11.3 mph S
Humidity64%
Visibility—
Dew point51°
Sat, 2167° / 52°0.05Light rain
67 °Light rain

Harristown, Saturday, 21 November

Light rain. High 67°, low 52°.

Pressure29.94 inHg
Wind18.6 mph S
Humidity35%
Visibility—
Dew point36°
Sun, 2248° / 28°0.09Snow
48 °Snow

Harristown, Sunday, 22 November

Snow. High 48°, low 28°.

Pressure30.00 inHg
Wind26 mph NW
Humidity84%
Visibility—
Dew point30°
Mon, 2328° / 23°0Light snow
28 °Light snow

Harristown, Monday, 23 November

Light snow. High 28°, low 23°.

Pressure30.21 inHg
Wind15.7 mph NW
Humidity40%
Visibility—
Dew point6°
Tue, 2430° / 18°0Clear
30 °Clear

Harristown, Tuesday, 24 November

Clear. High 30°, low 18°.

Pressure30.36 inHg
Wind13.5 mph NW
Humidity42%
Visibility—
Dew point8°
Wed, 2540° / 21°0Overcast
40 °Overcast

Harristown, Wednesday, 25 November

Overcast. High 40°, low 21°.

Pressure30.21 inHg
Wind17.2 mph SW
Humidity26%
Visibility—
Dew point3°
Thu, 2642° / 32°0Overcast
42 °Overcast

Harristown, Thursday, 26 November

Overcast. High 42°, low 32°.

Pressure30.21 inHg
Wind14.9 mph SW
Humidity50%
Visibility—
Dew point22°
Fri, 2746° / 34°0.27Rain
46 °Rain

Harristown, Friday, 27 November

Rain. High 46°, low 34°.

Pressure30.18 inHg
Wind21.3 mph SE
Humidity70%
Visibility—
Dew point31°
Sat, 2850° / 38°0.6Rain
50 °Rain

Harristown, Saturday, 28 November

Rain. High 50°, low 38°.

Pressure29.59 inHg
Wind23 mph S
Humidity78%
Visibility—
Dew point40°

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.