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As of 04:28 CDT

Weather in Harrisburg, IL

46°Current weather

Harrisburg, Tuesday, 27 October, 04:28

Clear. Feels like 46°. High 75°, low 46°.

Pressure30.24 inHg
Wind0 mph N
Humidity100%
Visibility6.2 mi
Dew point46°
Wed, 2877° / 48°0Clear
77 °Clear

Harrisburg, Wednesday, 28 October

Clear. High 77°, low 48°.

Pressure30.24 inHg
Wind5.7 mph S
Humidity44%
Visibility6.2 mi
Dew point51°
Thu, 2978° / 55°0Clear
78 °Clear

Harrisburg, Thursday, 29 October

Clear. High 78°, low 55°.

Pressure30.18 inHg
Wind7.8 mph SW
Humidity44%
Visibility6.2 mi
Dew point52°
Fri, 3077° / 57°0Overcast
77 °Overcast

Harrisburg, Friday, 30 October

Overcast. High 77°, low 57°.

Pressure30.24 inHg
Wind4.1 mph E
Humidity51%
Visibility6.2 mi
Dew point56°
Sat, 3174° / 60°0Overcast
74 °Overcast

Harrisburg, Saturday, 31 October

Overcast. High 74°, low 60°.

Pressure30.18 inHg
Wind8.1 mph SE
Humidity57%
Visibility—
Dew point55°
Sun, 0167° / 60°1.44Heavy rain
67 °Heavy rain

Harrisburg, Sunday, 1 November

Heavy rain. High 67°, low 60°.

Pressure30.09 inHg
Wind9.1 mph E
Humidity82%
Visibility—
Dew point61°
Mon, 0265° / 53°0Overcast
65 °Overcast

Harrisburg, Monday, 2 November

Overcast. High 65°, low 53°.

Pressure29.88 inHg
Wind7.8 mph N
Humidity59%
Visibility—
Dew point47°
Tue, 0368° / 52°0Overcast
68 °Overcast

Harrisburg, Tuesday, 3 November

Overcast. High 68°, low 52°.

Pressure30.00 inHg
Wind11.6 mph NE
Humidity59%
Visibility—
Dew point49°
Wed, 0462° / 58°1.42Heavy rain
62 °Heavy rain

Harrisburg, Wednesday, 4 November

Heavy rain. High 62°, low 58°.

Pressure29.77 inHg
Wind15.3 mph E
Humidity95%
Visibility—
Dew point58°
Thu, 0559° / 56°0.02Light rain
59 °Light rain

Harrisburg, Thursday, 5 November

Light rain. High 59°, low 56°.

Pressure29.77 inHg
Wind12.1 mph N
Humidity90%
Visibility—
Dew point56°
Fri, 0660° / 46°0Clear
60 °Clear

Harrisburg, Friday, 6 November

Clear. High 60°, low 46°.

Pressure30.06 inHg
Wind12.5 mph N
Humidity55%
Visibility—
Dew point42°
Sat, 0755° / 38°0Overcast
55 °Overcast

Harrisburg, Saturday, 7 November

Overcast. High 55°, low 38°.

Pressure30.21 inHg
Wind5.8 mph NE
Humidity42%
Visibility—
Dew point29°
Sun, 0861° / 42°0Overcast
61 °Overcast

Harrisburg, Sunday, 8 November

Overcast. High 61°, low 42°.

Pressure30.15 inHg
Wind8.2 mph S
Humidity39%
Visibility—
Dew point33°
Mon, 0968° / 51°0Overcast
68 °Overcast

Harrisburg, Monday, 9 November

Overcast. High 68°, low 51°.

Pressure30.18 inHg
Wind13.6 mph S
Humidity55%
Visibility—
Dew point48°
Tue, 1064° / 57°0.13Light rain
64 °Light rain

Harrisburg, Tuesday, 10 November

Light rain. High 64°, low 57°.

Pressure29.97 inHg
Wind13.3 mph S
Humidity84%
Visibility—
Dew point56°
Wed, 1167° / 55°0Overcast
67 °Overcast

Harrisburg, Wednesday, 11 November

Overcast. High 67°, low 55°.

Pressure29.88 inHg
Wind10.9 mph W
Humidity56%
Visibility—
Dew point49°

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 Harrisburg, 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 Harrisburg, 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.