Weather in Saint Clair, PA
Saint Clair, Saturday, 10 October, 09:32
Overcast. Feels like 51°. High 68°, low 47°.
Monthly outlook for Saint Clair, PA: average high 60.5°, average low 43.4°. That is 0.5° below the climate normal for October. Precipitation is expected on 4 days (about 2.5 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 13 October (78.4°), the coolest 19 October (27.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 10 October – 19 October | 62.3° | 62.7° | -0.2° |
| 20 October – 29 October | 57.5° | 58.6° | -0.6° |
| 30 October – 8 November | at normal | 55.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Pitcairn (15 mi).
1.27
Saint Clair, Sunday, 11 October
Heavy rain. High 68°, low 51°.
0.01Saint Clair, Monday, 12 October
Light rain. High 70°, low 52°.
0
Saint Clair, Tuesday, 13 October
Clear. High 78°, low 57°.
0.02Saint Clair, Wednesday, 14 October
Light rain. High 69°, low 60°.
0
Saint Clair, Thursday, 15 October
Mostly clear. High 62°, low 50°.
1.06Saint Clair, Friday, 16 October
Rain. High 71°, low 52°.
0Saint Clair, Saturday, 17 October
Overcast. High 46°, low 39°.
0.02Saint Clair, Sunday, 18 October
Light rain. High 43°, low 30°.
0Saint Clair, Monday, 19 October
Overcast. High 48°, low 28°.
0Saint Clair, Tuesday, 20 October
Clear. High 59°, low 32°.
0Saint Clair, Wednesday, 21 October
Overcast. High 59°, low 38°.
0.05Saint Clair, Thursday, 22 October
Light rain. High 58°, low 45°.
0Saint Clair, Friday, 23 October
Clear. High 61°, low 43°.
0Saint Clair, Saturday, 24 October
Clear. High 54°, low 35°.
0.05Saint Clair, Sunday, 25 October
Light rain. High 53°, low 36°.
0.1
Saint Clair, Monday, 26 October
Climate normal for this date — 60-year average.
0.12
Saint Clair, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.12Saint Clair, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.17Saint Clair, Thursday, 29 October
Climate normal for this date — 60-year average.
0.12Saint Clair, Friday, 30 October
Climate normal for this date — 60-year average.
0.12Saint Clair, Saturday, 31 October
Climate normal for this date — 60-year average.
0.11Saint Clair, Sunday, 1 November
Climate normal for this date — 60-year average.
0.14Saint Clair, Monday, 2 November
Climate normal for this date — 60-year average.
0.09Saint Clair, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.13Saint Clair, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.11Saint Clair, Thursday, 5 November
Climate normal for this date — 60-year average.
0.08Saint Clair, Friday, 6 November
Climate normal for this date — 60-year average.
0.13Saint Clair, Saturday, 7 November
Climate normal for this date — 60-year average.
0.11Saint Clair, Sunday, 8 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 Saint Clair, 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 Saint Clair, 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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