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As of 23:23 CST

Weather in Harristown, IL

45°Current weather

Harristown, Wednesday, 11 November, 23:23

Clear. Feels like 40°. High 64°, low 41°.

Pressure29.88 inHg
Wind8.1 mph NW
Humidity87%
Visibility6.2 mi
Dew point41°
Thu, 1249° / 35°0Partly cloudy
49 °Partly cloudy

Harristown, Thursday, 12 November

Partly cloudy. High 49°, low 35°.

Pressure29.94 inHg
Wind16 mph N
Humidity55%
Visibility6.2 mi
Dew point30°
Fri, 1346° / 33°0Overcast
46 °Overcast

Harristown, Friday, 13 November

Overcast. High 46°, low 33°.

Pressure30.06 inHg
Wind12.2 mph N
Humidity61%
Visibility6.2 mi
Dew point24°
Sat, 1445° / 28°0Clear
45 °Clear

Harristown, Saturday, 14 November

Clear. High 45°, low 28°.

Pressure30.33 inHg
Wind5.9 mph NW
Humidity57%
Visibility6.2 mi
Dew point25°
Sun, 1548° / 28°0Clear
48 °Clear

Harristown, Sunday, 15 November

Clear. High 48°, low 28°.

Pressure30.45 inHg
Wind2.6 mph NW
Humidity53%
Visibility6.2 mi
Dew point27°
Mon, 1653° / 29°0Clear
53 °Clear

Harristown, Monday, 16 November

Clear. High 53°, low 29°.

Pressure30.47 inHg
Wind6.2 mph SW
Humidity45%
Visibility—
Dew point28°
Tue, 1755° / 33°0Mostly clear
55 °Mostly clear

Harristown, Tuesday, 17 November

Mostly clear. High 55°, low 33°.

Pressure30.45 inHg
Wind7.4 mph SE
Humidity45%
Visibility—
Dew point30°
Wed, 1857° / 36°0Clear
57 °Clear

Harristown, Wednesday, 18 November

Clear. High 57°, low 36°.

Pressure30.36 inHg
Wind10.4 mph S
Humidity33%
Visibility—
Dew point24°
Thu, 1958° / 39°0Overcast
58 °Overcast

Harristown, Thursday, 19 November

Overcast. High 58°, low 39°.

Pressure30.27 inHg
Wind10.8 mph S
Humidity32%
Visibility—
Dew point25°
Fri, 2063° / 45°0Overcast
63 °Overcast

Harristown, Friday, 20 November

Overcast. High 63°, low 45°.

Pressure30.12 inHg
Wind12.2 mph SW
Humidity42%
Visibility—
Dew point35°
Sat, 2155° / 46°0Overcast
55 °Overcast

Harristown, Saturday, 21 November

Overcast. High 55°, low 46°.

Pressure30.15 inHg
Wind6.3 mph NW
Humidity73%
Visibility—
Dew point43°
Sun, 2265° / 47°0.03Light rain
65 °Light rain

Harristown, Sunday, 22 November

Light rain. High 65°, low 47°.

Pressure29.80 inHg
Wind17.7 mph S
Humidity55%
Visibility—
Dew point42°
Mon, 2350° / 42°0.02Light rain
50 °Light rain

Harristown, Monday, 23 November

Light rain. High 50°, low 42°.

Pressure30.00 inHg
Wind9.8 mph NW
Humidity61%
Visibility—
Dew point34°
Tue, 2443° / 34°1.74Snow
43 °Snow

Harristown, Tuesday, 24 November

Snow. High 43°, low 34°.

Pressure29.74 inHg
Wind19.2 mph N
Humidity93%
Visibility—
Dew point39°
Wed, 2537° / 28°0.09Snow
37 °Snow

Harristown, Wednesday, 25 November

Snow. High 37°, low 28°.

Pressure30.12 inHg
Wind15.3 mph NW
Humidity73%
Visibility—
Dew point26°
Thu, 2636° / 26°0Partly cloudy
36 °Partly cloudy

Harristown, Thursday, 26 November

Partly cloudy. High 36°, low 26°.

Pressure30.53 inHg
Wind9.7 mph NW
Humidity49%
Visibility—
Dew point17°

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.