Weather in Allegheny, PA
Allegheny, Monday, 26 October, 04:00
Clear. Feels like 40°. High 66°, low 40°.
Monthly outlook for Allegheny, PA: average high 53.2°, average low 37.9°. That is 0° below the climate normal for October. Precipitation is expected on 4 days (about 2.4 inches), against a normal of 6 days and 2.0 inches. The warmest day looks like 29 October (67.1°), the coolest 6 November (26.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 26 October – 4 November | 58.8° | 54.6° | +2.3° |
| 5 November – 14 November | 44° | 49.6° | -3.1° |
| 15 November – 24 November | at normal | 45.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Concord (11 mi).
0
Allegheny, Tuesday, 27 October
Overcast. High 62°, low 41°.
0Allegheny, Wednesday, 28 October
Overcast. High 66°, low 46°.
0
Allegheny, Thursday, 29 October
Clear. High 67°, low 47°.
0.05
Allegheny, Friday, 30 October
Light rain. High 64°, low 47°.
0Allegheny, Saturday, 31 October
Overcast. High 60°, low 43°.
0Allegheny, Sunday, 1 November
Overcast. High 59°, low 40°.
1.42Allegheny, Monday, 2 November
Rain. High 50°, low 48°.
0.15Allegheny, Tuesday, 3 November
Light rain. High 50°, low 41°.
0Allegheny, Wednesday, 4 November
Overcast. High 43°, low 33°.
0Allegheny, Thursday, 5 November
Clear. High 42°, low 28°.
0Allegheny, Friday, 6 November
Clear. High 46°, low 26°.
0Allegheny, Saturday, 7 November
Overcast. High 47°, low 28°.
0.75Allegheny, Sunday, 8 November
Rain. High 47°, low 40°.
0.02
Allegheny, Monday, 9 November
Snow. High 43°, low 30°.
0Allegheny, Tuesday, 10 November
Light rain. High 39°, low 29°.
0.16
Allegheny, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.13Allegheny, Thursday, 12 November
Climate normal for this date — 60-year average.
0.07Allegheny, Friday, 13 November
Climate normal for this date — 60-year average.
0.11
Allegheny, Saturday, 14 November
Climate normal for this date — 60-year average.
0.15Allegheny, Sunday, 15 November
Climate normal for this date — 60-year average.
0.15Allegheny, 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.
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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