Weather in Chatham Run, PA
Chatham Run, Sunday, 25 October, 09:39
Clear. Feels like 43°. High 62°, low 34°.
Monthly outlook for Chatham Run, PA: average high 61.7°, average low 46.2°. That is 6.1° above the climate normal for October. Precipitation is expected on 5 days (about 1.2 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 1 November (69.6°), the coolest 26 October (34.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 25 October – 3 November | 64.6° | 52.1° | +6.9° |
| 4 November – 13 November | 56.9° | 47.2° | +5.4° |
| 14 November – 23 November | at normal | 42.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Cummings (11 mi).
0
Chatham Run, Monday, 26 October
Mostly clear. High 69°, low 34°.
0Chatham Run, Tuesday, 27 October
Mostly clear. High 60°, low 42°.
0
Chatham Run, Wednesday, 28 October
Overcast. High 60°, low 38°.
0Chatham Run, Thursday, 29 October
Clear. High 68°, low 45°.
0Chatham Run, Friday, 30 October
Overcast. High 68°, low 49°.
0
Chatham Run, Saturday, 31 October
Light rain. High 63°, low 48°.
0Chatham Run, Sunday, 1 November
Overcast. High 70°, low 53°.
0.22Chatham Run, Monday, 2 November
Light rain. High 60°, low 53°.
0Chatham Run, Tuesday, 3 November
Overcast. High 65°, low 58°.
0.54Chatham Run, Wednesday, 4 November
Rain. High 63°, low 58°.
0.13Chatham Run, Thursday, 5 November
Rain. High 59°, low 50°.
0Chatham Run, Friday, 6 November
Overcast. High 58°, low 46°.
0.18Chatham Run, Saturday, 7 November
Light rain. High 57°, low 46°.
0.09Chatham Run, Sunday, 8 November
Light rain. High 52°, low 42°.
0Chatham Run, Monday, 9 November
Overcast. High 52°, low 42°.
0.16
Chatham Run, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.15Chatham Run, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.18Chatham Run, Thursday, 12 November
Climate normal for this date — 60-year average.
0.07Chatham Run, Friday, 13 November
Climate normal for this date — 60-year average.
0.09
Chatham Run, Saturday, 14 November
Climate normal for this date — 60-year average.
0.13Chatham Run, Sunday, 15 November
Climate normal for this date — 60-year average.
0.15Chatham Run, Monday, 16 November
Climate normal for this date — 60-year average.
0.11Chatham Run, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.09Chatham Run, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.11Chatham Run, Thursday, 19 November
Climate normal for this date — 60-year average.
0.1Chatham Run, Friday, 20 November
Climate normal for this date — 60-year average.
0.09Chatham Run, Saturday, 21 November
Climate normal for this date — 60-year average.
0.1Chatham Run, Sunday, 22 November
Climate normal for this date — 60-year average.
0.07Chatham Run, Monday, 23 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 Chatham Run, 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 Chatham Run, 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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