Weather in Upper Allen, PA
Upper Allen, Sunday, 11 October, 14:25
Light rain. Feels like 56°. High 61°, low 56°.
Monthly outlook for Upper Allen, PA: average high 62°, average low 45.4°. That is 0.2° below the climate normal for October. Precipitation is expected on 5 days (about 2.6 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 13 October (79.2°), the coolest 19 October (31.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 63.9° | 63.3° | +0.3° |
| 21 October – 30 October | 58.8° | 59.8° | -0.5° |
| 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).
0.06Upper Allen, Monday, 12 October
Light rain. High 76°, low 55°.
0
Upper Allen, Tuesday, 13 October
Clear. High 79°, low 54°.
0.04Upper Allen, Wednesday, 14 October
Light rain. High 78°, low 63°.
0
Upper Allen, Thursday, 15 October
Overcast. High 64°, low 55°.
0.4Upper Allen, Friday, 16 October
Light rain. High 69°, low 54°.
0.01Upper Allen, Saturday, 17 October
Light rain. High 49°, low 34°.
0Upper Allen, Sunday, 18 October
Clear. High 47°, low 32°.
0Upper Allen, Monday, 19 October
Overcast. High 55°, low 31°.
0Upper Allen, Tuesday, 20 October
Clear. High 61°, low 39°.
0Upper Allen, Wednesday, 21 October
Clear. High 62°, low 42°.
0Upper Allen, Thursday, 22 October
Overcast. High 58°, low 43°.
0Upper Allen, Friday, 23 October
Clear. High 59°, low 41°.
0Upper Allen, Saturday, 24 October
Overcast. High 62°, low 42°.
0Upper Allen, Sunday, 25 October
Clear. High 59°, low 45°.
0.13Upper Allen, Monday, 26 October
Light rain. High 53°, low 40°.
0.18
Upper 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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