Weather in Harrisburg, IL
Harrisburg, Wednesday, 28 October, 18:51
Clear. Feels like 66°. High 78°, low 49°.
0
Harrisburg, Thursday, 29 October
Clear. High 78°, low 51°.
0
Harrisburg, Friday, 30 October
Mostly clear. High 77°, low 53°.
0
Harrisburg, Saturday, 31 October
Overcast. High 70°, low 60°.
0.02
Harrisburg, Sunday, 1 November
Light rain. High 73°, low 56°.
0Harrisburg, Monday, 2 November
Overcast. High 71°, low 55°.
0.19Harrisburg, Tuesday, 3 November
Light rain. High 64°, low 62°.
0.48Harrisburg, Wednesday, 4 November
Rain. High 63°, low 61°.
0.06Harrisburg, Thursday, 5 November
Light rain. High 64°, low 58°.
0
Harrisburg, Friday, 6 November
Partly cloudy. High 57°, low 42°.
0Harrisburg, Saturday, 7 November
Mostly clear. High 61°, low 41°.
0Harrisburg, Sunday, 8 November
Overcast. High 66°, low 47°.
0.53Harrisburg, Monday, 9 November
Rain. High 60°, low 55°.
0.55Harrisburg, Tuesday, 10 November
Rain. High 59°, low 48°.
0Harrisburg, Wednesday, 11 November
Clear. High 49°, low 38°.
0Harrisburg, Thursday, 12 November
Overcast. High 47°, low 33°.
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.
Sun and moon today
Weather history
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