Weather in Saint Clair, PA
Saint Clair, Sunday, 11 October, 02:20
Rain. Feels like 54°. High 66°, low 51°.
Monthly outlook for Saint Clair, PA: average high 58.6°, average low 41.7°. That is 1.4° below the climate normal for October. Precipitation is expected on 4 days (about 3.4 inches), against a normal of 6 days and 1.8 inches. The warmest day looks like 13 October (79.2°), the coolest 19 October (26.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 61.1° | 62.2° | -0.6° |
| 21 October – 30 October | 54.4° | 58.4° | -2.2° |
| 31 October – 9 November | at normal | 55.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Pitcairn (15 mi).
0
Saint Clair, Monday, 12 October
Overcast. High 70°, low 52°.
0
Saint Clair, Tuesday, 13 October
Clear. High 79°, low 57°.
1.29Saint Clair, Wednesday, 14 October
Heavy rain. High 72°, low 58°.
0Saint Clair, Thursday, 15 October
Overcast. High 61°, low 50°.
0.22Saint Clair, Friday, 16 October
Rain. High 65°, low 50°.
0.15
Saint Clair, Saturday, 17 October
Snow. High 50°, low 34°.
0Saint Clair, Sunday, 18 October
Overcast. High 44°, low 27°.
0Saint Clair, Monday, 19 October
Overcast. High 50°, low 27°.
0Saint Clair, Tuesday, 20 October
Overcast. High 54°, low 31°.
0Saint Clair, Wednesday, 21 October
Overcast. High 58°, low 35°.
0
Saint Clair, Thursday, 22 October
Partly cloudy. High 62°, low 40°.
0.02Saint Clair, Friday, 23 October
Light rain. High 54°, low 44°.
0.03Saint Clair, Saturday, 24 October
Light rain. High 47°, low 37°.
0Saint Clair, Sunday, 25 October
Partly cloudy. High 54°, low 32°.
0Saint Clair, Monday, 26 October
Overcast. High 52°, low 40°.
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.
0.11Saint Clair, Monday, 9 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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