Weather in Chatham, NY
Chatham, Sunday, 11 October, 03:33
Overcast. Feels like 42°. High 56°, low 44°.
Monthly outlook for Chatham, NY: average high 56.7°, average low 38.9°. That is 1.2° above the climate normal for October. Precipitation is expected on 6 days (about 3.1 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 13 October (71.2°), the coolest 25 October (27.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 59.6° | 55.4° | +2.3° |
| 21 October – 30 October | 51.9° | 51.8° | +0° |
| 31 October – 9 November | at normal | 48.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — West Stockbridge (13 mi).
0.8
Chatham, Monday, 12 October
Heavy rain. High 71°, low 47°.
0.09Chatham, Tuesday, 13 October
Rain. High 71°, low 53°.
0.01Chatham, Wednesday, 14 October
Light rain. High 71°, low 61°.
0
Chatham, Thursday, 15 October
Clear. High 57°, low 45°.
0.09Chatham, Friday, 16 October
Light rain. High 64°, low 39°.
0.6
Chatham, Saturday, 17 October
Snow. High 64°, low 38°.
0.02Chatham, Sunday, 18 October
Light snow. High 43°, low 31°.
0Chatham, Monday, 19 October
Clear. High 47°, low 28°.
0Chatham, Tuesday, 20 October
Overcast. High 51°, low 30°.
0Chatham, Wednesday, 21 October
Clear. High 56°, low 33°.
0Chatham, Thursday, 22 October
Overcast. High 60°, low 42°.
0.04Chatham, Friday, 23 October
Light rain. High 56°, low 42°.
0Chatham, Saturday, 24 October
Clear. High 46°, low 31°.
0
Chatham, Sunday, 25 October
Mostly clear. High 45°, low 28°.
0Chatham, Monday, 26 October
Overcast. High 49°, low 32°.
0.12
Chatham, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.17Chatham, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.14Chatham, Thursday, 29 October
Climate normal for this date — 60-year average.
0.11Chatham, Friday, 30 October
Climate normal for this date — 60-year average.
0.07Chatham, Saturday, 31 October
Climate normal for this date — 60-year average.
0.09Chatham, Sunday, 1 November
Climate normal for this date — 60-year average.
0.1Chatham, Monday, 2 November
Climate normal for this date — 60-year average.
0.13
Chatham, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.05Chatham, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.13Chatham, Thursday, 5 November
Climate normal for this date — 60-year average.
0.1Chatham, Friday, 6 November
Climate normal for this date — 60-year average.
0.08Chatham, Saturday, 7 November
Climate normal for this date — 60-year average.
0.11Chatham, Sunday, 8 November
Climate normal for this date — 60-year average.
0.1Chatham, 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 Chatham, NY 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, NY 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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