Weather in Allegheny, PA
Allegheny, Saturday, 31 October, 00:50
Mostly clear. Feels like 42°. High 59°, low 39°.
Monthly outlook for Allegheny, PA: average high 56.8°, average low 42.1°. That is 3.2° above the climate normal for October. Precipitation is expected on 4 days (about 1.5 inches), against a normal of 6 days and 2.0 inches. The warmest day looks like 4 November (69.2°), the coolest 15 November (27.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 31 October – 9 November | 61.9° | 52.8° | +5° |
| 10 November – 19 November | 48.4° | 47.3° | +0.6° |
| 20 November – 29 November | at normal | 44.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Concord (11 mi).
0
Allegheny, Sunday, 1 November
Overcast. High 67°, low 46°.
0
Allegheny, Monday, 2 November
Partly cloudy. High 66°, low 47°.
0Allegheny, Tuesday, 3 November
Overcast. High 68°, low 47°.
0Allegheny, Wednesday, 4 November
Overcast. High 69°, low 48°.
0.86
Allegheny, Thursday, 5 November
Rain. High 66°, low 56°.
0.2Allegheny, Friday, 6 November
Light rain. High 59°, low 52°.
0Allegheny, Saturday, 7 November
Overcast. High 55°, low 43°.
0Allegheny, Sunday, 8 November
Overcast. High 54°, low 39°.
0
Allegheny, Monday, 9 November
Mostly clear. High 56°, low 38°.
0
Allegheny, Tuesday, 10 November
Clear. High 57°, low 40°.
0Allegheny, Wednesday, 11 November
Clear. High 59°, low 41°.
0Allegheny, Thursday, 12 November
Overcast. High 54°, low 41°.
0.07Allegheny, Friday, 13 November
Light rain. High 47°, low 38°.
0.36
Allegheny, Saturday, 14 November
Snow. High 36°, low 32°.
0.04Allegheny, Sunday, 15 November
Light snow. High 37°, low 27°.
0.15
Allegheny, Monday, 16 November
Climate normal for this date — 60-year average.
0.14Allegheny, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.08Allegheny, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.13Allegheny, Thursday, 19 November
Climate normal for this date — 60-year average.
0.12Allegheny, 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.
0.07Allegheny, Monday, 23 November
Climate normal for this date — 60-year average.
0.12Allegheny, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.13Allegheny, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.2Allegheny, Thursday, 26 November
Climate normal for this date — 60-year average.
0.15Allegheny, Friday, 27 November
Climate normal for this date — 60-year average.
0.19Allegheny, Saturday, 28 November
Climate normal for this date — 60-year average.
0.09Allegheny, Sunday, 29 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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