Weather in Harpers Ferry, IA
Harpers Ferry, Friday, 13 November, 01:45
Partly cloudy. Feels like 24°. High 39°, low 30°.
Monthly outlook for Harpers Ferry, IA: average high 48.2°, average low 35.4°. That is 3.8° above the climate normal for November. Precipitation is expected on 4 days (about 0.4 inches), against a normal of 4 days and 1.1 inches. The warmest day looks like 22 November (61.1°), the coolest 26 November (20.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 13 November – 22 November | 51.4° | 43.1° | +4.6° |
| 23 November – 2 December | 42.9° | 37.4° | +3° |
| 3 December – 12 December | at normal | 32° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Waterville (7 mi).
0
Harpers Ferry, Saturday, 14 November
Clear. High 42°, low 29°.
0Harpers Ferry, Sunday, 15 November
Clear. High 45°, low 28°.
0
Harpers Ferry, Monday, 16 November
Mostly clear. High 49°, low 30°.
0Harpers Ferry, Tuesday, 17 November
Mostly clear. High 52°, low 35°.
0
Harpers Ferry, Wednesday, 18 November
Overcast. High 52°, low 37°.
0.11
Harpers Ferry, Thursday, 19 November
Light rain. High 56°, low 45°.
0Harpers Ferry, Friday, 20 November
Overcast. High 56°, low 40°.
0.09Harpers Ferry, Saturday, 21 November
Light rain. High 61°, low 55°.
0.11Harpers Ferry, Sunday, 22 November
Light rain. High 61°, low 55°.
0.04Harpers Ferry, Monday, 23 November
Light rain. High 60°, low 43°.
0
Harpers Ferry, Tuesday, 24 November
Partly cloudy. High 40°, low 27°.
0Harpers Ferry, Wednesday, 25 November
Overcast. High 33°, low 24°.
0Harpers Ferry, Thursday, 26 November
Mostly clear. High 32°, low 21°.
0.02Harpers Ferry, Friday, 27 November
Light rain. High 44°, low 28°.
0Harpers Ferry, Saturday, 28 November
Overcast. High 50°, low 37°.
0.07Harpers Ferry, Sunday, 29 November
Climate normal for this date — 60-year average.
0.06Harpers Ferry, Monday, 30 November
Climate normal for this date — 60-year average.
0.08Harpers Ferry, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.05Harpers Ferry, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.09
Harpers Ferry, Thursday, 3 December
Climate normal for this date — 60-year average.
0.06Harpers Ferry, Friday, 4 December
Climate normal for this date — 60-year average.
0.06Harpers Ferry, Saturday, 5 December
Climate normal for this date — 60-year average.
0.03Harpers Ferry, Sunday, 6 December
Climate normal for this date — 60-year average.
0.06Harpers Ferry, Monday, 7 December
Climate normal for this date — 60-year average.
0.04Harpers Ferry, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.07Harpers Ferry, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.05Harpers Ferry, Thursday, 10 December
Climate normal for this date — 60-year average.
0.07Harpers Ferry, Friday, 11 December
Climate normal for this date — 60-year average.
0.04Harpers Ferry, Saturday, 12 December
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 Harpers Ferry, 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 Harpers Ferry, 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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