Weather in Chatham, PA
Chatham, Monday, 26 October, 22:51
Partly cloudy. Feels like 51°. High 64°, low 36°.
Monthly outlook for Chatham, PA: average high 53.1°, average low 38.3°. That is 0.5° above the climate normal for October. Precipitation is expected on 5 days (about 1.8 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 29 October (68.8°), the coolest 9 November (25.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 26 October – 4 November | 58.6° | 53.6° | +2.8° |
| 5 November – 14 November | 44° | 48.4° | -2.4° |
| 15 November – 24 November | at normal | 44.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Nelson (11 mi).
0
Chatham, Tuesday, 27 October
Partly cloudy. High 56°, low 33°.
0
Chatham, Wednesday, 28 October
Overcast. High 63°, low 34°.
0
Chatham, Thursday, 29 October
Clear. High 69°, low 46°.
0
Chatham, Friday, 30 October
Mostly clear. High 61°, low 44°.
0Chatham, Saturday, 31 October
Partly cloudy. High 63°, low 40°.
0.12
Chatham, Sunday, 1 November
Light rain. High 60°, low 50°.
0.96Chatham, Monday, 2 November
Rain. High 52°, low 51°.
0.02Chatham, Tuesday, 3 November
Light rain. High 51°, low 46°.
0Chatham, Wednesday, 4 November
Overcast. High 49°, low 35°.
0.46Chatham, Thursday, 5 November
Rain. High 58°, low 47°.
0.01
Chatham, Friday, 6 November
Light snow. High 43°, low 30°.
0.02Chatham, Saturday, 7 November
Light snow. High 40°, low 30°.
0.07Chatham, Sunday, 8 November
Light snow. High 37°, low 30°.
0.01Chatham, Monday, 9 November
Light rain. High 43°, low 25°.
0.15Chatham, Tuesday, 10 November
Light rain. High 43°, low 38°.
0.12
Chatham, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.15Chatham, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Chatham, Friday, 13 November
Climate normal for this date — 60-year average.
0.11Chatham, Saturday, 14 November
Climate normal for this date — 60-year average.
0.12Chatham, Sunday, 15 November
Climate normal for this date — 60-year average.
0.13Chatham, Monday, 16 November
Climate normal for this date — 60-year average.
0.11Chatham, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.07Chatham, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.09Chatham, Thursday, 19 November
Climate normal for this date — 60-year average.
0.09Chatham, Friday, 20 November
Climate normal for this date — 60-year average.
0.07Chatham, Saturday, 21 November
Climate normal for this date — 60-year average.
0.09Chatham, Sunday, 22 November
Climate normal for this date — 60-year average.
0.06Chatham, Monday, 23 November
Climate normal for this date — 60-year average.
0.07Chatham, 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 Chatham, 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, 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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