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As of 17:56 CST

Weather in Harristown, IL

59°Current weather

Harristown, Monday, 9 November, 17:56

Clear. Feels like 57°. High 65°, low 36°.

Pressure30.09 inHg
Wind0 mph N
Humidity44%
Visibility6.2 mi
Dew point37°
Tue, 1067° / 43°0Clear
67 °Clear

Harristown, Tuesday, 10 November

Clear. High 67°, low 43°.

Pressure30.06 inHg
Wind3.4 mph NW
Humidity59%
Visibility6.2 mi
Dew point48°
Wed, 1160° / 42°0.26Heavy rain
60 °Heavy rain

Harristown, Wednesday, 11 November

Heavy rain. High 60°, low 42°.

Pressure29.74 inHg
Wind6.2 mph SW
Humidity85%
Visibility2.2 mi
Dew point53°
Thu, 1246° / 38°0Overcast
46 °Overcast

Harristown, Thursday, 12 November

Overcast. High 46°, low 38°.

Pressure29.97 inHg
Wind12.5 mph NW
Humidity55%
Visibility6.2 mi
Dew point28°
Fri, 1342° / 33°0Overcast
42 °Overcast

Harristown, Friday, 13 November

Overcast. High 42°, low 33°.

Pressure30.09 inHg
Wind12.5 mph N
Humidity62%
Visibility6.2 mi
Dew point23°
Sat, 1444° / 28°0Clear
44 °Clear

Harristown, Saturday, 14 November

Clear. High 44°, low 28°.

Pressure30.24 inHg
Wind6.9 mph NW
Humidity59%
Visibility—
Dew point28°
Sun, 1549° / 28°0Overcast
49 °Overcast

Harristown, Sunday, 15 November

Overcast. High 49°, low 28°.

Pressure30.27 inHg
Wind6.4 mph E
Humidity46%
Visibility—
Dew point25°
Mon, 1654° / 36°0Overcast
54 °Overcast

Harristown, Monday, 16 November

Overcast. High 54°, low 36°.

Pressure30.36 inHg
Wind7.2 mph SE
Humidity35%
Visibility—
Dew point23°
Tue, 1756° / 37°0Clear
56 °Clear

Harristown, Tuesday, 17 November

Clear. High 56°, low 37°.

Pressure30.45 inHg
Wind7.6 mph SE
Humidity34%
Visibility—
Dew point24°
Wed, 1859° / 39°0Overcast
59 °Overcast

Harristown, Wednesday, 18 November

Overcast. High 59°, low 39°.

Pressure30.39 inHg
Wind11 mph SE
Humidity36%
Visibility—
Dew point28°
Thu, 1961° / 44°0Overcast
61 °Overcast

Harristown, Thursday, 19 November

Overcast. High 61°, low 44°.

Pressure30.21 inHg
Wind16.4 mph S
Humidity38%
Visibility—
Dew point33°
Fri, 2053° / 47°0.41Rain
53 °Rain

Harristown, Friday, 20 November

Rain. High 53°, low 47°.

Pressure30.09 inHg
Wind16.6 mph SE
Humidity83%
Visibility—
Dew point44°
Sat, 2160° / 47°0.7Rain
60 °Rain

Harristown, Saturday, 21 November

Rain. High 60°, low 47°.

Pressure29.77 inHg
Wind25.9 mph S
Humidity60%
Visibility—
Dew point42°
Sun, 2251° / 37°0Clear
51 °Clear

Harristown, Sunday, 22 November

Clear. High 51°, low 37°.

Pressure30.27 inHg
Wind10.5 mph NW
Humidity43%
Visibility—
Dew point27°
Mon, 2346° / 34°0Overcast
46 °Overcast

Harristown, Monday, 23 November

Overcast. High 46°, low 34°.

Pressure30.27 inHg
Wind11.5 mph NE
Humidity50%
Visibility—
Dew point26°
Tue, 2449° / 36°0Overcast
49 °Overcast

Harristown, Tuesday, 24 November

Overcast. High 49°, low 36°.

Pressure30.15 inHg
Wind8.1 mph NE
Humidity55%
Visibility—
Dew point31°

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.