Weather in Cos Cob, CT
Cos Cob, Wednesday, 21 October, 08:03
Clear. Feels like 41°. High 64°, low 46°.
Monthly outlook for Cos Cob, CT: average high 59.6°, average low 47°. That is 0.6° above the climate normal for October. Precipitation is expected on 5 days (about 0.5 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 27 October (66°), the coolest 24 October (35.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 60.8° | 59.3° | +0.9° |
| 31 October – 9 November | 57.6° | 56.3° | +0.7° |
| 10 November – 19 November | at normal | 51.3° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Pemberwick (4 mi).
0Cos Cob, Thursday, 22 October
Clear. High 66°, low 44°.
0Cos Cob, Friday, 23 October
Clear. High 55°, low 40°.
0
Cos Cob, Saturday, 24 October
Mostly clear. High 58°, low 36°.
0Cos Cob, Sunday, 25 October
Clear. High 62°, low 39°.
0Cos Cob, Monday, 26 October
Clear. High 64°, low 40°.
0
Cos Cob, Tuesday, 27 October
Partly cloudy. High 66°, low 53°.
0.05
Cos Cob, Wednesday, 28 October
Light rain. High 57°, low 54°.
0.06Cos Cob, Thursday, 29 October
Light rain. High 63°, low 57°.
0Cos Cob, Friday, 30 October
Clear. High 54°, low 46°.
0Cos Cob, Saturday, 31 October
Clear. High 49°, low 39°.
0
Cos Cob, Sunday, 1 November
Overcast. High 53°, low 39°.
0.06Cos Cob, Monday, 2 November
Light rain. High 61°, low 53°.
0.21Cos Cob, Tuesday, 3 November
Light rain. High 64°, low 58°.
0.12Cos Cob, Wednesday, 4 November
Light rain. High 59°, low 54°.
0Cos Cob, Thursday, 5 November
Overcast. High 60°, low 55°.
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.
0.15
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.
0.08Cos 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.
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.
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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