Weather in Chatham, NH
Chatham, Wednesday, 21 October, 11:59
Clear. Feels like 50°. High 55°, low 34°.
Monthly outlook for Chatham, NH: average high 53.7°, average low 35.4°. That is 1.3° above the climate normal for October. Precipitation is expected on 1 day (about 0.2 inches), against a normal of 5 days and 2.8 inches. The warmest day looks like 26 October (61.3°), the coolest 24 October (29.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 54.4° | 52.4° | +1.1° |
| 31 October – 9 November | 52.6° | 48.6° | +2.2° |
| 10 November – 19 November | at normal | 43.3° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Lovell (8 mi).
0
Chatham, Thursday, 22 October
Overcast. High 59°, low 30°.
0Chatham, Friday, 23 October
Clear. High 48°, low 30°.
0Chatham, Saturday, 24 October
Clear. High 55°, low 29°.
0Chatham, Sunday, 25 October
Clear. High 59°, low 41°.
0
Chatham, Monday, 26 October
Mostly clear. High 61°, low 39°.
0Chatham, Tuesday, 27 October
Clear. High 47°, low 30°.
0Chatham, Wednesday, 28 October
Clear. High 52°, low 30°.
0.02
Chatham, Thursday, 29 October
Light rain. High 59°, low 40°.
0Chatham, Friday, 30 October
Light rain. High 49°, low 34°.
0Chatham, Saturday, 31 October
Clear. High 50°, low 32°.
0Chatham, Sunday, 1 November
Overcast. High 46°, low 30°.
0Chatham, Monday, 2 November
Overcast. High 59°, low 37°.
0Chatham, Tuesday, 3 November
Overcast. High 61°, low 47°.
0Chatham, Wednesday, 4 November
Light rain. High 50°, low 44°.
0.13Chatham, Thursday, 5 November
Light rain. High 49°, low 38°.
0.16
Chatham, Friday, 6 November
Climate normal for this date — 60-year average.
0.07
Chatham, Saturday, 7 November
Climate normal for this date — 60-year average.
0.09Chatham, Sunday, 8 November
Climate normal for this date — 60-year average.
0.14Chatham, Monday, 9 November
Climate normal for this date — 60-year average.
0.15Chatham, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.16Chatham, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.18Chatham, Thursday, 12 November
Climate normal for this date — 60-year average.
0.18Chatham, Friday, 13 November
Climate normal for this date — 60-year average.
0.1Chatham, Saturday, 14 November
Climate normal for this date — 60-year average.
0.15Chatham, Sunday, 15 November
Climate normal for this date — 60-year average.
0.19Chatham, Monday, 16 November
Climate normal for this date — 60-year average.
0.14Chatham, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.09Chatham, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Chatham, Thursday, 19 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, NH 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, NH 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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