Weather in Harristown, PA
Harristown, Wednesday, 4 November, 06:47
Clear. Feels like 49°. High 74°, low 49°.
Monthly outlook for Harristown, PA: average high 55.4°, average low 39.7°. That is 1° above the climate normal for November. Precipitation is expected on 2 days (about 1.0 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 4 November (74.1°), the coolest 18 November (26.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 4 November – 13 November | 59.9° | 54.9° | +2.8° |
| 14 November – 23 November | 47.9° | 50.7° | -1.5° |
| 24 November – 3 December | at normal | 48.3° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Lancaster (12 mi).
0.94
Harristown, Thursday, 5 November
Heavy rain. High 72°, low 56°.
0
Harristown, Friday, 6 November
Partly cloudy. High 68°, low 52°.
0
Harristown, Saturday, 7 November
Overcast. High 55°, low 46°.
0.02Harristown, Sunday, 8 November
Light rain. High 56°, low 45°.
0Harristown, Monday, 9 November
Overcast. High 54°, low 46°.
0Harristown, Tuesday, 10 November
Partly cloudy. High 62°, low 41°.
0Harristown, Wednesday, 11 November
Clear. High 59°, low 43°.
0Harristown, Thursday, 12 November
Clear. High 48°, low 32°.
0Harristown, Friday, 13 November
Overcast. High 52°, low 37°.
0Harristown, Saturday, 14 November
Clear. High 43°, low 32°.
0Harristown, Sunday, 15 November
Clear. High 47°, low 27°.
0.08Harristown, Monday, 16 November
Light rain. High 50°, low 35°.
0
Harristown, Tuesday, 17 November
Mostly clear. High 41°, low 30°.
0Harristown, Wednesday, 18 November
Clear. High 47°, low 26°.
0Harristown, Thursday, 19 November
Partly cloudy. High 60°, low 37°.
0.09Harristown, Friday, 20 November
Climate normal for this date — 60-year average.
0.09Harristown, Saturday, 21 November
Climate normal for this date — 60-year average.
0.12Harristown, Sunday, 22 November
Climate normal for this date — 60-year average.
0.06Harristown, Monday, 23 November
Climate normal for this date — 60-year average.
0.13Harristown, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.12
Harristown, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.15Harristown, Thursday, 26 November
Climate normal for this date — 60-year average.
0.09Harristown, Friday, 27 November
Climate normal for this date — 60-year average.
0.17Harristown, Saturday, 28 November
Climate normal for this date — 60-year average.
0.14Harristown, Sunday, 29 November
Climate normal for this date — 60-year average.
0.11Harristown, Monday, 30 November
Climate normal for this date — 60-year average.
0.11Harristown, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.1Harristown, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.11Harristown, Thursday, 3 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 Harristown, PA 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 Harristown, PA 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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