Weather in Cos Cob, CT
Cos Cob, Sunday, 25 October, 08:34
Clear. Feels like 47°. High 67°, low 35°.
Monthly outlook for Cos Cob, CT: average high 61.3°, average low 47.9°. That is 2.4° above the climate normal for October. Precipitation is expected on 5 days (about 1.2 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 30 October (71.1°), the coolest 25 October (34.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 25 October – 3 November | 63° | 58.2° | +2.7° |
| 4 November – 13 November | 58.4° | 54° | +2.5° |
| 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
Mostly clear. High 68°, low 40°.
0Cos Cob, Tuesday, 27 October
Clear. High 56°, low 42°.
0Cos Cob, Wednesday, 28 October
Clear. High 56°, low 37°.
0Cos Cob, Thursday, 29 October
Clear. High 63°, low 44°.
0Cos Cob, Friday, 30 October
Clear. High 71°, low 52°.
0Cos Cob, Saturday, 31 October
Mostly clear. High 60°, low 52°.
0.05
Cos Cob, Sunday, 1 November
Light rain. High 60°, low 55°.
0
Cos Cob, Monday, 2 November
Overcast. High 65°, low 56°.
0Cos Cob, Tuesday, 3 November
Overcast. High 63°, low 57°.
0.01Cos Cob, Wednesday, 4 November
Light rain. High 65°, low 59°.
0.75Cos Cob, Thursday, 5 November
Rain. High 60°, low 48°.
0.04Cos Cob, Friday, 6 November
Light rain. High 58°, low 50°.
0.05Cos Cob, Saturday, 7 November
Light rain. High 60°, low 50°.
0.3Cos Cob, Sunday, 8 November
Rain. High 56°, low 47°.
0Cos Cob, Monday, 9 November
Overcast. High 53°, 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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