Weather in Harrisburg, IL
Harrisburg, Tuesday, 10 November, 04:19
Clear. Feels like 49°. High 72°, low 46°.
0
Harrisburg, Wednesday, 11 November
Partly cloudy. High 71°, low 44°.
0
Harrisburg, Thursday, 12 November
Light rain. High 54°, low 41°.
0
Harrisburg, Friday, 13 November
Overcast. High 44°, low 37°.
0
Harrisburg, Saturday, 14 November
Mostly clear. High 48°, low 31°.
0Harrisburg, Sunday, 15 November
Overcast. High 53°, low 32°.
0Harrisburg, Monday, 16 November
Overcast. High 52°, low 41°.
0Harrisburg, Tuesday, 17 November
Overcast. High 56°, low 46°.
0
Harrisburg, Wednesday, 18 November
Clear. High 63°, low 42°.
0Harrisburg, Thursday, 19 November
Overcast. High 63°, low 50°.
0.26Harrisburg, Friday, 20 November
Light rain. High 59°, low 56°.
0.09Harrisburg, Saturday, 21 November
Light rain. High 62°, low 49°.
0Harrisburg, Sunday, 22 November
Overcast. High 52°, low 42°.
0.57
Harrisburg, Monday, 23 November
Snow. High 41°, low 36°.
0.01Harrisburg, Tuesday, 24 November
Light snow. High 47°, low 32°.
0Harrisburg, Wednesday, 25 November
Clear. High 37°, low 26°.
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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