Weather in Cos Cob, CT
Cos Cob, Monday, 19 October, 21:57
Clear. Feels like 46°. High 65°, low 36°.
Monthly outlook for Cos Cob, CT: average high 59.5°, average low 43.7°. That is 0.2° above the climate normal for October. Precipitation is expected on 1 day (about 0.8 inches), against a normal of 4 days and 2.1 inches. The warmest day looks like 20 October (67.2°), the coolest 29 October (36.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 61.4° | 60° | +0.8° |
| 29 October – 7 November | 56.3° | 56.9° | -0.3° |
| 8 November – 17 November | at normal | 52.1° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Pemberwick (4 mi).
0
Cos Cob, Tuesday, 20 October
Clear. High 67°, low 45°.
0
Cos Cob, Wednesday, 21 October
Mostly clear. High 61°, low 40°.
0Cos Cob, Thursday, 22 October
Clear. High 62°, low 43°.
0Cos Cob, Friday, 23 October
Clear. High 51°, low 40°.
0Cos Cob, Saturday, 24 October
Clear. High 56°, low 37°.
0Cos Cob, Sunday, 25 October
Clear. High 62°, low 40°.
0
Cos Cob, Monday, 26 October
Overcast. High 66°, low 51°.
0.03
Cos Cob, Tuesday, 27 October
Light rain. High 64°, low 57°.
0Cos Cob, Wednesday, 28 October
Overcast. High 60°, low 42°.
0Cos Cob, Thursday, 29 October
Clear. High 50°, low 36°.
0Cos Cob, Friday, 30 October
Clear. High 52°, low 38°.
0Cos Cob, Saturday, 31 October
Clear. High 57°, low 43°.
0Cos Cob, Sunday, 1 November
Clear. High 59°, low 46°.
0Cos Cob, Monday, 2 November
Overcast. High 62°, low 51°.
0.8Cos Cob, Tuesday, 3 November
Rain. High 58°, low 56°.
0.05
Cos Cob, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.12
Cos Cob, Thursday, 5 November
Climate normal for this date — 60-year average.
0.08Cos Cob, Friday, 6 November
Climate normal for this date — 60-year average.
0.09Cos Cob, Saturday, 7 November
Climate normal for this date — 60-year average.
0.15Cos Cob, Sunday, 8 November
Climate normal for this date — 60-year average.
0.08Cos Cob, Monday, 9 November
Climate normal for this date — 60-year average.
0.15Cos 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.
0.08Cos 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.
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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