Weather in Upper Allen, PA
Upper Allen, Monday, 19 October, 13:05
Clear. Feels like 60°. High 64°, low 35°.
Monthly outlook for Upper Allen, PA: average high 58.9°, average low 40.7°. That is 0.4° below the climate normal for October. Precipitation is expected on 3 days (about 4.6 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 20 October (68°), the coolest 30 October (32°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 62° | 60.5° | +0.8° |
| 29 October – 7 November | 53.8° | 57.4° | -2° |
| 8 November – 17 November | at normal | 52.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Messiah College (2 mi).
0Upper Allen, Tuesday, 20 October
Clear. High 68°, low 41°.
0Upper Allen, Wednesday, 21 October
Clear. High 61°, low 38°.
0Upper Allen, Thursday, 22 October
Clear. High 64°, low 38°.
0Upper Allen, Friday, 23 October
Clear. High 53°, low 40°.
0Upper Allen, Saturday, 24 October
Clear. High 57°, low 34°.
0Upper Allen, Sunday, 25 October
Clear. High 60°, low 38°.
0
Upper Allen, Monday, 26 October
Overcast. High 65°, low 44°.
0Upper Allen, Tuesday, 27 October
Overcast. High 65°, low 51°.
0.02
Upper Allen, Wednesday, 28 October
Light rain. High 63°, low 38°.
0Upper Allen, Thursday, 29 October
Clear. High 47°, low 35°.
0
Upper Allen, Friday, 30 October
Partly cloudy. High 54°, low 32°.
0Upper Allen, Saturday, 31 October
Overcast. High 58°, low 40°.
0.23Upper Allen, Sunday, 1 November
Light rain. High 52°, low 47°.
1.86Upper Allen, Monday, 2 November
Heavy rain. High 58°, low 51°.
2.46Upper Allen, Tuesday, 3 November
Heavy rain. High 53°, low 49°.
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.
0.17
Upper Allen, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.14Upper Allen, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.17Upper Allen, Thursday, 12 November
Climate normal for this date — 60-year average.
0.07Upper Allen, Friday, 13 November
Climate normal for this date — 60-year average.
0.07
Upper Allen, Saturday, 14 November
Climate normal for this date — 60-year average.
0.13Upper Allen, Sunday, 15 November
Climate normal for this date — 60-year average.
0.14Upper Allen, Monday, 16 November
Climate normal for this date — 60-year average.
0.09Upper 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 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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