Weather in Allegheny, PA
Allegheny, Wednesday, 28 October, 07:56
Overcast. Feels like 48°. High 68°, low 44°.
Monthly outlook for Allegheny, PA: average high 56.7°, average low 41.4°. That is 2.4° above the climate normal for October. Precipitation is expected on 6 days (about 2.4 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 29 October (70.7°), the coolest 8 November (30.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 28 October – 6 November | 61.3° | 53.9° | +4.1° |
| 7 November – 16 November | 49° | 48.8° | +0.1° |
| 17 November – 26 November | at normal | 45.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Huston (13 mi).
0
Allegheny, Thursday, 29 October
Clear. High 71°, low 42°.
0.02
Allegheny, Friday, 30 October
Light rain. High 60°, low 46°.
0Allegheny, Saturday, 31 October
Overcast. High 58°, low 41°.
0Allegheny, Sunday, 1 November
Clear. High 68°, low 49°.
0Allegheny, Monday, 2 November
Clear. High 70°, low 50°.
0Allegheny, Tuesday, 3 November
Overcast. High 58°, low 49°.
0.11Allegheny, Wednesday, 4 November
Light rain. High 48°, low 42°.
1.57Allegheny, Thursday, 5 November
Rain. High 58°, low 47°.
0.34Allegheny, Friday, 6 November
Rain. High 55°, low 46°.
0.05
Allegheny, Saturday, 7 November
Snow. High 41°, low 34°.
0Allegheny, Sunday, 8 November
Clear. High 48°, low 31°.
0Allegheny, Monday, 9 November
Clear. High 51°, low 31°.
0
Allegheny, Tuesday, 10 November
Mostly clear. High 55°, low 34°.
0.06Allegheny, Wednesday, 11 November
Light rain. High 51°, low 35°.
0.27Allegheny, Thursday, 12 November
Rain. High 47°, low 42°.
0.06
Allegheny, Friday, 13 November
Climate normal for this date — 60-year average.
0.08Allegheny, Saturday, 14 November
Climate normal for this date — 60-year average.
0.11
Allegheny, Sunday, 15 November
Climate normal for this date — 60-year average.
0.13Allegheny, Monday, 16 November
Climate normal for this date — 60-year average.
0.09Allegheny, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.07Allegheny, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.09Allegheny, Thursday, 19 November
Climate normal for this date — 60-year average.
0.08Allegheny, Friday, 20 November
Climate normal for this date — 60-year average.
0.1Allegheny, Saturday, 21 November
Climate normal for this date — 60-year average.
0.11Allegheny, Sunday, 22 November
Climate normal for this date — 60-year average.
0.05Allegheny, Monday, 23 November
Climate normal for this date — 60-year average.
0.1Allegheny, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.1Allegheny, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.17Allegheny, Thursday, 26 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 Allegheny, 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 Allegheny, 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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