Weather in Chatham Run, PA
Chatham Run, Tuesday, 27 October, 16:05
Overcast. Feels like 60°. High 63°, low 43°.
Monthly outlook for Chatham Run, PA: average high 57.6°, average low 44.1°. That is 4.3° above the climate normal for October. Precipitation is expected on 6 days (about 2.1 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 29 October (68.7°), the coolest 11 November (30.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 27 October – 5 November | 60.2° | 51.4° | +4.9° |
| 6 November – 15 November | 53.2° | 46.2° | +3.9° |
| 16 November – 25 November | at normal | 42.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Cummings (11 mi).
0Chatham Run, Wednesday, 28 October
Overcast. High 64°, low 39°.
0
Chatham Run, Thursday, 29 October
Clear. High 69°, low 40°.
0Chatham Run, Friday, 30 October
Clear. High 65°, low 45°.
0Chatham Run, Saturday, 31 October
Overcast. High 61°, low 40°.
0Chatham Run, Sunday, 1 November
Clear. High 67°, low 46°.
1.04
Chatham Run, Monday, 2 November
Rain. High 57°, low 47°.
0.05Chatham Run, Tuesday, 3 November
Light rain. High 57°, low 51°.
0.03Chatham Run, Wednesday, 4 November
Light rain. High 48°, low 43°.
0.39Chatham Run, Thursday, 5 November
Rain. High 51°, low 43°.
0.23Chatham Run, Friday, 6 November
Light rain. High 57°, low 52°.
0.04Chatham Run, Saturday, 7 November
Light rain. High 54°, low 49°.
0Chatham Run, Sunday, 8 November
Overcast. High 54°, low 48°.
0Chatham Run, Monday, 9 November
Clear. High 59°, low 44°.
0.3Chatham Run, Tuesday, 10 November
Rain. High 52°, low 46°.
0.02
Chatham Run, Wednesday, 11 November
Snow. High 44°, low 31°.
0.18
Chatham 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.
0.1Chatham Run, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.12Chatham Run, Wednesday, 25 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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