Weather in Cos Cob, CT
Cos Cob, Sunday, 25 October, 02:02
Clear. Feels like 39°. High 66°, low 39°.
Monthly outlook for Cos Cob, CT: average high 60.5°, average low 46.9°. That is 1.9° above the climate normal for October. Precipitation is expected on 3 days (about 1.1 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 30 October (70.4°), the coolest 28 October (37.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 25 October – 3 November | 62.8° | 58.2° | +2.6° |
| 4 November – 13 November | 56.7° | 54° | +1.5° |
| 14 November – 23 November | at normal | 49.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Pemberwick (4 mi).
0
Cos Cob, Monday, 26 October
Clear. High 68°, low 42°.
0Cos Cob, Tuesday, 27 October
Clear. High 56°, low 42°.
0Cos Cob, Wednesday, 28 October
Clear. High 55°, low 37°.
0Cos Cob, Thursday, 29 October
Clear. High 64°, low 45°.
0
Cos Cob, Friday, 30 October
Mostly clear. High 70°, low 53°.
0Cos Cob, Saturday, 31 October
Clear. High 58°, low 50°.
0
Cos Cob, Sunday, 1 November
Overcast. High 65°, low 54°.
0.44
Cos Cob, Monday, 2 November
Rain. High 63°, low 59°.
0Cos Cob, Tuesday, 3 November
Clear. High 64°, low 49°.
0.16Cos Cob, Wednesday, 4 November
Rain. High 56°, low 44°.
0.47Cos Cob, Thursday, 5 November
Rain. High 63°, low 55°.
0Cos Cob, Friday, 6 November
Overcast. High 52°, low 43°.
0.01Cos Cob, Saturday, 7 November
Light rain. High 56°, low 42°.
0.02Cos Cob, Sunday, 8 November
Light rain. High 64°, low 51°.
0Cos Cob, Monday, 9 November
Overcast. High 49°, low 43°.
0.15
Cos Cob, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.14Cos Cob, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.14Cos Cob, Thursday, 12 November
Climate normal for this date — 60-year average.
0.19Cos Cob, Friday, 13 November
Climate normal for this date — 60-year average.
0.08
Cos Cob, Saturday, 14 November
Climate normal for this date — 60-year average.
0.1Cos Cob, Sunday, 15 November
Climate normal for this date — 60-year average.
0.12Cos Cob, Monday, 16 November
Climate normal for this date — 60-year average.
0.11Cos Cob, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.08Cos Cob, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Cos Cob, Thursday, 19 November
Climate normal for this date — 60-year average.
0.13Cos Cob, Friday, 20 November
Climate normal for this date — 60-year average.
0.11Cos Cob, Saturday, 21 November
Climate normal for this date — 60-year average.
0.14Cos Cob, Sunday, 22 November
Climate normal for this date — 60-year average.
0.11Cos Cob, 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 Cos Cob, CT 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 Cos Cob, CT 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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