As of 09:07 CST

Weather in Harristown, IL

52°

Harristown, Thursday, 5 November, 09:07

Overcast. Feels like 51°. High 55°, low 49°.

Pressure29.83 inHg

Wind10.4 mph W

Humidity82%

Visibility6.2 mi

Dew point46°

See detailed hourly forecast

Fri, 0651° / 37°

51 °

Harristown, Friday, 6 November

Overcast. High 51°, low 37°.

Pressure30.18 inHg

Wind9.8 mph N

Humidity51%

Visibility6.2 mi

Dew point31°

Sat, 0751° / 33°

51 °

Harristown, Saturday, 7 November

Overcast. High 51°, low 33°.

Pressure30.27 inHg

Wind5.5 mph NW

Humidity50%

Visibility6.2 mi

Dew point31°

Sun, 0861° / 37°

61 °

Harristown, Sunday, 8 November

Overcast. High 61°, low 37°.

Pressure30.12 inHg

Wind9.1 mph W

Humidity59%

Visibility6.2 mi

Dew point44°

Mon, 0963° / 39°

63 °

Harristown, Monday, 9 November

Clear. High 63°, low 39°.

Pressure30.18 inHg

Wind7.4 mph SW

Humidity52%

Visibility—

Dew point40°

Tue, 1063° / 45°

63 °

Harristown, Tuesday, 10 November

Clear. High 63°, low 45°.

Pressure30.06 inHg

Wind7 mph SW

Humidity63%

Visibility—

Dew point46°

Wed, 1156° / 42°

56 °

Harristown, Wednesday, 11 November

Partly cloudy. High 56°, low 42°.

Pressure30.09 inHg

Wind15.6 mph N

Humidity31%

Visibility—

Dew point24°

Thu, 1244° / 34°

44 °

Harristown, Thursday, 12 November

Clear. High 44°, low 34°.

Pressure30.21 inHg

Wind13.8 mph N

Humidity39%

Visibility—

Dew point19°

Fri, 1345° / 28°

45 °

Harristown, Friday, 13 November

Clear. High 45°, low 28°.

Pressure30.27 inHg

Wind10.3 mph NW

Humidity34%

Visibility—

Dew point15°

Sat, 1449° / 28°

49 °

Harristown, Saturday, 14 November

Partly cloudy. High 49°, low 28°.

Pressure30.24 inHg

Wind9.2 mph W

Humidity28%

Visibility—

Dew point13°

Sun, 1555° / 35°

55 °

Harristown, Sunday, 15 November

Clear. High 55°, low 35°.

Pressure30.30 inHg

Wind6.3 mph SW

Humidity29%

Visibility—

Dew point18°

Mon, 1657° / 37°

57 °

Harristown, Monday, 16 November

Clear. High 57°, low 37°.

Pressure30.18 inHg

Wind9.3 mph SW

Humidity27%

Visibility—

Dew point20°

Tue, 1762° / 40°

62 °

Harristown, Tuesday, 17 November

Clear. High 62°, low 40°.

Pressure30.15 inHg

Wind9.7 mph W

Humidity36%

Visibility—

Dew point30°

Wed, 1863° / 42°

63 °

Harristown, Wednesday, 18 November

Overcast. High 63°, low 42°.

Pressure30.12 inHg

Wind13.6 mph SW

Humidity25%

Visibility—

Dew point23°

Thu, 1967° / 47°

67 °

Harristown, Thursday, 19 November

Overcast. High 67°, low 47°.

Pressure29.97 inHg

Wind20.1 mph SW

Humidity43%

Visibility—

Dew point39°

Fri, 2065° / 56°

0.05

65 °

Harristown, Friday, 20 November

Light rain. High 65°, low 56°.

Pressure30.06 inHg

Wind10.7 mph S

Humidity76%

Visibility—

Dew point56°

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.