Weather in Harrisburg, IA
Harrisburg, Sunday, 9 August, 03:05
Overcast. Feels like 70°. High 94°, low 69°.
0
Harrisburg, Monday, 10 August
Light rain. High 91°, low 73°.
0
Harrisburg, Tuesday, 11 August
Partly cloudy. High 95°, low 74°.
0.18Harrisburg, Wednesday, 12 August
Rain. High 84°, low 73°.
0.07Harrisburg, Thursday, 13 August
Light rain. High 80°, low 64°.
0.74Harrisburg, Friday, 14 August
Rain. High 65°, low 62°.
0.18Harrisburg, Saturday, 15 August
Light rain. High 79°, low 61°.
0.01Harrisburg, Sunday, 16 August
Light rain. High 80°, low 66°.
0Harrisburg, Monday, 17 August
Overcast. High 83°, low 66°.
0Harrisburg, Tuesday, 18 August
Overcast. High 89°, low 67°.
0Harrisburg, Wednesday, 19 August
Partly cloudy. High 104°, low 72°.
0Harrisburg, Thursday, 20 August
Overcast. High 106°, low 78°.
0
Harrisburg, Friday, 21 August
Mostly clear. High 91°, low 73°.
0
Harrisburg, Saturday, 22 August
Clear. High 112°, low 74°.
0.13Harrisburg, Sunday, 23 August
Light rain. High 99°, low 73°.
0.24Harrisburg, Monday, 24 August
Light rain. High 88°, low 70°.
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, IA 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, IA 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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