As of 07:21 CST

Weather in Harristown, IL

36°

Harristown, Wednesday, 11 November, 07:21

Clear. Feels like 36°. High 64°, low 36°.

Pressure29.85 inHg

Wind0 mph N

Humidity93%

Visibility6.2 mi

Dew point34°

See detailed hourly forecast

Thu, 1249° / 40°

49 °

Harristown, Thursday, 12 November

Overcast. High 49°, low 40°.

Pressure29.94 inHg

Wind15.1 mph N

Humidity58%

Visibility6.2 mi

Dew point30°

Fri, 1344° / 34°

44 °

Harristown, Friday, 13 November

Overcast. High 44°, low 34°.

Pressure30.06 inHg

Wind14.3 mph N

Humidity60%

Visibility6.2 mi

Dew point24°

Sat, 1445° / 28°

45 °

Harristown, Saturday, 14 November

Clear. High 45°, low 28°.

Pressure30.27 inHg

Wind6.4 mph NW

Humidity58%

Visibility6.2 mi

Dew point24°

Sun, 1549° / 29°

49 °

Harristown, Sunday, 15 November

Clear. High 49°, low 29°.

Pressure30.39 inHg

Wind3.1 mph E

Humidity51%

Visibility—

Dew point28°

Mon, 1651° / 30°

51 °

Harristown, Monday, 16 November

Clear. High 51°, low 30°.

Pressure30.47 inHg

Wind6.3 mph E

Humidity47%

Visibility—

Dew point28°

Tue, 1752° / 35°

52 °

Harristown, Tuesday, 17 November

Clear. High 52°, low 35°.

Pressure30.39 inHg

Wind6.9 mph E

Humidity40%

Visibility—

Dew point25°

Wed, 1854° / 36°

54 °

Harristown, Wednesday, 18 November

Mostly clear. High 54°, low 36°.

Pressure30.27 inHg

Wind11.2 mph SE

Humidity39%

Visibility—

Dew point26°

Thu, 1955° / 41°

55 °

Harristown, Thursday, 19 November

Overcast. High 55°, low 41°.

Pressure30.09 inHg

Wind14.1 mph S

Humidity52%

Visibility—

Dew point32°

Fri, 2056° / 48°

0.31

56 °

Harristown, Friday, 20 November

Rain. High 56°, low 48°.

Pressure30.00 inHg

Wind14.2 mph SE

Humidity76%

Visibility—

Dew point44°

Sat, 2158° / 47°

0.41

58 °

Harristown, Saturday, 21 November

Rain. High 58°, low 47°.

Pressure29.59 inHg

Wind15 mph SW

Humidity63%

Visibility—

Dew point45°

Sun, 2242° / 29°

0.13

42 °

Harristown, Sunday, 22 November

Snow. High 42°, low 29°.

Pressure30.06 inHg

Wind17.7 mph NW

Humidity64%

Visibility—

Dew point26°

Mon, 2328° / 21°

0.04

28 °

Harristown, Monday, 23 November

Light snow. High 28°, low 21°.

Pressure30.18 inHg

Wind19.2 mph NW

Humidity74%

Visibility—

Dew point19°

Tue, 2435° / 17°

35 °

Harristown, Tuesday, 24 November

Clear. High 35°, low 17°.

Pressure30.39 inHg

Wind11.8 mph NW

Humidity31%

Visibility—

Dew point2°

Wed, 2547° / 28°

47 °

Harristown, Wednesday, 25 November

Overcast. High 47°, low 28°.

Pressure30.15 inHg

Wind13.9 mph SW

Humidity45%

Visibility—

Dew point22°

Thu, 2652° / 38°

52 °

Harristown, Thursday, 26 November

Overcast. High 52°, low 38°.

Pressure30.15 inHg

Wind12.8 mph SW

Humidity55%

Visibility—

Dew point35°

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.