Weather in Harper, IA
Harper, Thursday, 8 October, 11:11
Mostly clear. Feels like 66°. High 75°, low 49°.
Monthly outlook for Harper, IA: average high 69.8°, average low 52.8°. That is 3.8° above the climate normal for October. Precipitation is expected on 4 days (about 1.7 inches), against a normal of 4 days and 1.5 inches. The warmest day looks like 12 October (83.1°), the coolest 23 October (41°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 October – 17 October | 73.3° | 64.2° | +5° |
| 18 October – 27 October | 64° | 59.7° | +2.4° |
| 28 October – 6 November | at normal | 55.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — West Chester (12 mi).
0.24
Harper, Friday, 9 October
Rain. High 80°, low 53°.
0
Harper, Saturday, 10 October
Overcast. High 77°, low 62°.
0
Harper, Sunday, 11 October
Clear. High 78°, low 56°.
0Harper, Monday, 12 October
Clear. High 83°, low 66°.
0.09Harper, Tuesday, 13 October
Light rain. High 71°, low 62°.
1.26Harper, Wednesday, 14 October
Heavy rain. High 70°, low 57°.
0
Harper, Thursday, 15 October
Partly cloudy. High 83°, low 68°.
0Harper, Friday, 16 October
Overcast. High 63°, low 48°.
0Harper, Saturday, 17 October
Overcast. High 53°, low 41°.
0Harper, Sunday, 18 October
Overcast. High 56°, low 42°.
0.02Harper, Monday, 19 October
Light rain. High 71°, low 49°.
0Harper, Tuesday, 20 October
Partly cloudy. High 72°, low 51°.
0Harper, Wednesday, 21 October
Clear. High 68°, low 51°.
0.11Harper, Thursday, 22 October
Light rain. High 58°, low 49°.
0Harper, Friday, 23 October
Clear. High 59°, low 41°.
0.12Harper, Saturday, 24 October
Climate normal for this date — 60-year average.
0.06Harper, Sunday, 25 October
Climate normal for this date — 60-year average.
0.11Harper, Monday, 26 October
Climate normal for this date — 60-year average.
0.06Harper, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.05Harper, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.08Harper, Thursday, 29 October
Climate normal for this date — 60-year average.
0.09
Harper, Friday, 30 October
Climate normal for this date — 60-year average.
0.13Harper, Saturday, 31 October
Climate normal for this date — 60-year average.
0.17Harper, Sunday, 1 November
Climate normal for this date — 60-year average.
0.09Harper, Monday, 2 November
Climate normal for this date — 60-year average.
0.07Harper, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.11Harper, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.07Harper, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Harper, Friday, 6 November
Climate normal for this date — 60-year average.
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 Harper, 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 Harper, 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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