Weather in Harpers Ferry, IA
Harpers Ferry, Friday, 13 November, 19:42
Clear. Feels like 26°. High 40°, low 28°.
Monthly outlook for Harpers Ferry, IA: average high 41.5°, average low 26.7°. That is 0.1° above the climate normal for November. Precipitation is expected on 4 days (about 2.2 inches), against a normal of 4 days and 1.1 inches. The warmest day looks like 21 November (56.6°), the coolest 24 November (8.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 13 November – 22 November | 47.8° | 43.1° | +2.6° |
| 23 November – 2 December | 30.9° | 37.4° | -3.6° |
| 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 25°.
0Harpers Ferry, Sunday, 15 November
Clear. High 46°, low 28°.
0
Harpers Ferry, Monday, 16 November
Overcast. High 49°, low 30°.
0Harpers Ferry, Tuesday, 17 November
Overcast. High 52°, low 34°.
0Harpers Ferry, Wednesday, 18 November
Overcast. High 53°, low 40°.
0.02
Harpers Ferry, Thursday, 19 November
Light rain. High 52°, low 40°.
0Harpers Ferry, Friday, 20 November
Overcast. High 56°, low 36°.
1.02
Harpers Ferry, Saturday, 21 November
Snow. High 57°, low 35°.
0.47Harpers Ferry, Sunday, 22 November
Snow. High 32°, low 15°.
0Harpers Ferry, Monday, 23 November
Overcast. High 23°, low 12°.
0Harpers Ferry, Tuesday, 24 November
Clear. High 23°, low 9°.
0Harpers Ferry, Wednesday, 25 November
Overcast. High 31°, low 21°.
0Harpers Ferry, Thursday, 26 November
Overcast. High 31°, low 20°.
0.18Harpers Ferry, Friday, 27 November
Light rain. High 34°, low 21°.
0.48Harpers Ferry, Saturday, 28 November
Snow. High 43°, low 32°.
0.07
Harpers 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.
0.04
Harpers 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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