Weather in Lower Allen, PA
Lower Allen, Monday, 19 October, 14:51
Clear. Feels like 64°. High 66°, low 35°.
Monthly outlook for Lower Allen, PA: average high 59.3°, average low 41.1°. That is 0.4° below the climate normal for October. Precipitation is expected on 3 days (about 4.7 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 20 October (68.2°), the coolest 30 October (32.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 62.4° | 60.8° | +0.9° |
| 29 October – 7 November | 54.1° | 57.7° | -2° |
| 8 November – 17 November | at normal | 52.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Shiremanstown (2 mi).
0Lower Allen, Tuesday, 20 October
Clear. High 68°, low 41°.
0Lower Allen, Wednesday, 21 October
Clear. High 61°, low 39°.
0Lower Allen, Thursday, 22 October
Clear. High 64°, low 40°.
0Lower Allen, Friday, 23 October
Clear. High 53°, low 41°.
0Lower Allen, Saturday, 24 October
Clear. High 57°, low 36°.
0Lower Allen, Sunday, 25 October
Clear. High 60°, low 39°.
0
Lower Allen, Monday, 26 October
Overcast. High 65°, low 44°.
0Lower Allen, Tuesday, 27 October
Overcast. High 65°, low 51°.
0.02
Lower Allen, Wednesday, 28 October
Light rain. High 64°, low 38°.
0Lower Allen, Thursday, 29 October
Clear. High 47°, low 35°.
0
Lower Allen, Friday, 30 October
Partly cloudy. High 54°, low 32°.
0Lower Allen, Saturday, 31 October
Overcast. High 59°, low 40°.
0.23Lower Allen, Sunday, 1 November
Light rain. High 53°, low 47°.
1.91Lower Allen, Monday, 2 November
Heavy rain. High 59°, low 51°.
2.54Lower Allen, Tuesday, 3 November
Heavy rain. High 53°, low 49°.
0.08Lower Allen, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.11Lower Allen, Thursday, 5 November
Climate normal for this date — 60-year average.
0.06Lower Allen, Friday, 6 November
Climate normal for this date — 60-year average.
0.08Lower Allen, Saturday, 7 November
Climate normal for this date — 60-year average.
0.16
Lower Allen, Sunday, 8 November
Climate normal for this date — 60-year average.
0.08Lower Allen, Monday, 9 November
Climate normal for this date — 60-year average.
0.17
Lower Allen, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.14Lower Allen, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.17Lower Allen, Thursday, 12 November
Climate normal for this date — 60-year average.
0.07Lower Allen, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Lower Allen, Saturday, 14 November
Climate normal for this date — 60-year average.
0.13Lower Allen, Sunday, 15 November
Climate normal for this date — 60-year average.
0.14Lower Allen, Monday, 16 November
Climate normal for this date — 60-year average.
0.09Lower Allen, Tuesday, 17 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 Lower Allen, 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 Lower Allen, 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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