Weather in Upper Allen, PA
Upper Allen, Sunday, 11 October, 20:04
Overcast. Feels like 58°. High 61°, low 57°.
Monthly outlook for Upper Allen, PA: average high 65.3°, average low 48.7°. That is 1.7° above the climate normal for October. Precipitation is expected on 2 days (about 2.3 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 13 October (79.8°), the coolest 18 October (30.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 65.2° | 63.3° | +1.1° |
| 21 October – 30 October | 65.5° | 59.8° | +3.2° |
| 31 October – 9 November | at normal | 56.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Messiah College (2 mi).
0.02
Upper Allen, Monday, 12 October
Light rain. High 74°, low 56°.
0
Upper Allen, Tuesday, 13 October
Clear. High 80°, low 55°.
0Upper Allen, Wednesday, 14 October
Overcast. High 76°, low 63°.
0Upper Allen, Thursday, 15 October
Overcast. High 66°, low 56°.
0.49Upper Allen, Friday, 16 October
Rain. High 72°, low 53°.
0Upper Allen, Saturday, 17 October
Clear. High 49°, low 35°.
0Upper Allen, Sunday, 18 October
Clear. High 51°, low 30°.
0Upper Allen, Monday, 19 October
Clear. High 61°, low 34°.
0
Upper Allen, Tuesday, 20 October
Partly cloudy. High 64°, low 42°.
0.01Upper Allen, Wednesday, 21 October
Light rain. High 63°, low 45°.
0Upper Allen, Thursday, 22 October
Overcast. High 62°, low 53°.
0Upper Allen, Friday, 23 October
Overcast. High 65°, low 49°.
0Upper Allen, Saturday, 24 October
Overcast. High 69°, low 52°.
0.02Upper Allen, Sunday, 25 October
Light rain. High 73°, low 55°.
0.01Upper Allen, Monday, 26 October
Light rain. High 59°, low 44°.
0.18Upper Allen, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.1Upper Allen, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.2Upper Allen, Thursday, 29 October
Climate normal for this date — 60-year average.
0.11Upper Allen, Friday, 30 October
Climate normal for this date — 60-year average.
0.07Upper Allen, Saturday, 31 October
Climate normal for this date — 60-year average.
0.06Upper Allen, Sunday, 1 November
Climate normal for this date — 60-year average.
0.14Upper Allen, Monday, 2 November
Climate normal for this date — 60-year average.
0.07Upper Allen, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.08Upper Allen, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.11Upper Allen, Thursday, 5 November
Climate normal for this date — 60-year average.
0.06Upper Allen, Friday, 6 November
Climate normal for this date — 60-year average.
0.08Upper Allen, Saturday, 7 November
Climate normal for this date — 60-year average.
0.16Upper Allen, Sunday, 8 November
Climate normal for this date — 60-year average.
0.08Upper Allen, Monday, 9 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 Upper 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 Upper 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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