Weather in Allegheny, PA
Allegheny, Monday, 19 October, 09:23
Clear. Feels like 42°. High 67°, low 34°.
Monthly outlook for Allegheny, PA: average high 57.4°, average low 38.2°. That is 0.5° below the climate normal for October. Precipitation is expected on 3 days (about 1.1 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 20 October (68.2°), the coolest 30 October (27.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 61.1° | 58.9° | +1.3° |
| 29 October – 7 November | 51° | 56° | -2.8° |
| 8 November – 17 November | at normal | 50.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Brackenridge (5 mi).
0
Allegheny, Tuesday, 20 October
Partly cloudy. High 68°, low 37°.
0Allegheny, Wednesday, 21 October
Clear. High 63°, low 37°.
0Allegheny, Thursday, 22 October
Partly cloudy. High 62°, low 39°.
0Allegheny, Friday, 23 October
Clear. High 54°, low 37°.
0Allegheny, Saturday, 24 October
Clear. High 56°, low 32°.
0Allegheny, Sunday, 25 October
Clear. High 62°, low 37°.
0
Allegheny, Monday, 26 October
Overcast. High 60°, low 46°.
0.01
Allegheny, Tuesday, 27 October
Light rain. High 65°, low 49°.
0.35
Allegheny, Wednesday, 28 October
Snow. High 55°, low 33°.
0Allegheny, Thursday, 29 October
Overcast. High 43°, low 29°.
0
Allegheny, Friday, 30 October
Mostly clear. High 50°, low 27°.
0Allegheny, Saturday, 31 October
Overcast. High 55°, low 39°.
0.16Allegheny, Sunday, 1 November
Light rain. High 53°, low 45°.
0.5Allegheny, Monday, 2 November
Rain. High 56°, low 44°.
0.04Allegheny, Tuesday, 3 November
Light rain. High 49°, low 44°.
0.13
Allegheny, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.11Allegheny, Thursday, 5 November
Climate normal for this date — 60-year average.
0.09Allegheny, Friday, 6 November
Climate normal for this date — 60-year average.
0.13Allegheny, Saturday, 7 November
Climate normal for this date — 60-year average.
0.11Allegheny, Sunday, 8 November
Climate normal for this date — 60-year average.
0.12Allegheny, Monday, 9 November
Climate normal for this date — 60-year average.
0.17Allegheny, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.16Allegheny, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.14Allegheny, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Allegheny, Friday, 13 November
Climate normal for this date — 60-year average.
0.11Allegheny, Saturday, 14 November
Climate normal for this date — 60-year average.
0.14Allegheny, Sunday, 15 November
Climate normal for this date — 60-year average.
0.14Allegheny, Monday, 16 November
Climate normal for this date — 60-year average.
0.12Allegheny, 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 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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