Weather in Cos Cob, CT
Cos Cob, Saturday, 31 October, 19:13
Clear. Feels like 48°. High 58°, low 41°.
Monthly outlook for Cos Cob, CT: average high 59.6°, average low 47.2°. That is 2.7° above the climate normal for October. Precipitation is expected on 6 days (about 3.0 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 5 November (70.6°), the coolest 1 November (34.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 31 October – 9 November | 62.8° | 56.3° | +3.6° |
| 10 November – 19 November | 54.2° | 51.3° | +1.6° |
| 20 November – 29 November | at normal | 48.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Pemberwick (4 mi).
0
Cos Cob, Sunday, 1 November
Overcast. High 62°, low 35°.
0Cos Cob, Monday, 2 November
Overcast. High 65°, low 40°.
0
Cos Cob, Tuesday, 3 November
Partly cloudy. High 68°, low 46°.
0
Cos Cob, Wednesday, 4 November
Mostly clear. High 69°, low 51°.
0.04
Cos Cob, Thursday, 5 November
Light rain. High 71°, low 52°.
0.67Cos Cob, Friday, 6 November
Rain. High 65°, low 60°.
0.04Cos Cob, Saturday, 7 November
Light rain. High 58°, low 49°.
0Cos Cob, Sunday, 8 November
Overcast. High 59°, low 49°.
1.32Cos Cob, Monday, 9 November
Heavy rain. High 54°, low 51°.
0.07Cos Cob, Tuesday, 10 November
Light rain. High 56°, low 50°.
0
Cos Cob, Wednesday, 11 November
Clear. High 57°, low 48°.
0Cos Cob, Thursday, 12 November
Clear. High 53°, low 46°.
0Cos Cob, Friday, 13 November
Overcast. High 53°, low 44°.
0.16Cos Cob, Saturday, 14 November
Light rain. High 50°, low 47°.
0.69Cos Cob, Sunday, 15 November
Rain. High 57°, low 47°.
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.
0.14
Cos 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.
0.09Cos Cob, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.13Cos Cob, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.21Cos Cob, Thursday, 26 November
Climate normal for this date — 60-year average.
0.13Cos Cob, Friday, 27 November
Climate normal for this date — 60-year average.
0.15Cos Cob, Saturday, 28 November
Climate normal for this date — 60-year average.
0.09Cos Cob, Sunday, 29 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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