Monthly outlook for Cos Cob, CT: average high 55.7°, average low 45°. That is 1.9° above the climate normal for November. Precipitation is expected on 5 days (about 2.1 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 5 November (72.4°), the coolest 13 November (34.7°).
55.7°/45°
Average high / low
+1.9°
Above normal
5 / 5
Wet days / normal
2.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
5 November – 14 November
57.3°
53.5°
+2.1°
15 November – 24 November
53°
49.6°
+1.9°
25 November – 4 December
at normal
47.2°
—
November records over 66 years
78.4°6 November 2024All-time high
15.1°23 November 2018All-time low
Climate normals and records are computed from the nearest reference point — Pemberwick (4 mi).
Fri, 0671° / 55°0.72
71 °
Cos Cob, Friday, 6 November
Heavy rain. High 71°, low 55°.
Pressure29.85 inHg
Wind2.1 mph N
Humidity96%
Visibility2.7 mi
Dew point62°
Sat, 0764° / 47°0.07
64 °
Cos Cob, Saturday, 7 November
Light rain. High 64°, low 47°.
Pressure29.80 inHg
Wind5.1 mph W
Humidity69%
Visibility6.2 mi
Dew point53°
Sun, 0858° / 46°0.01
58 °
Cos Cob, Sunday, 8 November
Light rain. High 58°, low 46°.
Pressure29.88 inHg
Wind10.6 mph W
Humidity58%
Visibility6.2 mi
Dew point42°
Mon, 0953° / 45°0
53 °
Cos Cob, Monday, 9 November
Overcast. High 53°, low 45°.
Pressure29.85 inHg
Wind18.1 mph NW
Humidity52%
Visibility—
Dew point34°
Tue, 1060° / 40°0
60 °
Cos Cob, Tuesday, 10 November
Partly cloudy. High 60°, low 40°.
Pressure29.91 inHg
Wind11.2 mph W
Humidity64%
Visibility—
Dew point37°
Wed, 1157° / 49°0
57 °
Cos Cob, Wednesday, 11 November
Partly cloudy. High 57°, low 49°.
Pressure29.83 inHg
Wind11.6 mph W
Humidity54%
Visibility—
Dew point37°
Thu, 1249° / 40°0
49 °
Cos Cob, Thursday, 12 November
Clear. High 49°, low 40°.
Pressure29.77 inHg
Wind10.2 mph N
Humidity58%
Visibility—
Dew point31°
Fri, 1344° / 35°0
44 °
Cos Cob, Friday, 13 November
Clear. High 44°, low 35°.
Pressure29.71 inHg
Wind12.7 mph N
Humidity59%
Visibility—
Dew point26°
Sat, 1446° / 35°0
46 °
Cos Cob, Saturday, 14 November
Partly cloudy. High 46°, low 35°.
Pressure29.85 inHg
Wind11.8 mph NW
Humidity52%
Visibility—
Dew point25°
Sun, 1548° / 38°0.03
48 °
Cos Cob, Sunday, 15 November
Light rain. High 48°, low 38°.
Pressure29.97 inHg
Wind10.8 mph NW
Humidity74%
Visibility—
Dew point36°
Mon, 1651° / 40°0
51 °
Cos Cob, Monday, 16 November
Clear. High 51°, low 40°.
Pressure30.18 inHg
Wind8.8 mph NW
Humidity62%
Visibility—
Dew point33°
Tue, 1752° / 46°0.27
52 °
Cos Cob, Tuesday, 17 November
Light rain. High 52°, low 46°.
Pressure30.06 inHg
Wind7.7 mph E
Humidity94%
Visibility—
Dew point47°
Wed, 1854° / 48°0.01
54 °
Cos Cob, Wednesday, 18 November
Light rain. High 54°, low 48°.
Pressure30.12 inHg
Wind9.5 mph E
Humidity94%
Visibility—
Dew point49°
Thu, 1961° / 53°0.94
61 °
Cos Cob, Thursday, 19 November
Rain. High 61°, low 53°.
Pressure29.88 inHg
Wind17 mph W
Humidity93%
Visibility—
Dew point56°
Fri, 2051° / 43°0
51 °
Cos Cob, Friday, 20 November
Clear. High 51°, low 43°.
Pressure29.91 inHg
Wind18.6 mph NW
Humidity60%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2149° / 37°0.11
49 °
Cos Cob, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.11 in
Chance of precipitation32%
Record high62° (1985)
Record low20° (1987)
Sun, 2248° / 37°0.14
48 °
Cos Cob, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high48°
Average low37°
Average precipitation0.14 in
Chance of precipitation35%
Record high64° (2007)
Record low17° (2018)
Mon, 2347° / 36°0.11
47 °
Cos Cob, Monday, 23 November
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.11 in
Chance of precipitation23%
Record high66° (1992)
Record low15° (2018)
Tue, 2449° / 37°0.09
49 °
Cos Cob, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.09 in
Chance of precipitation23%
Record high66° (1979)
Record low16° (1989)
Wed, 2549° / 37°0.13
49 °
Cos Cob, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.13 in
Chance of precipitation32%
Record high67° (1979)
Record low23° (2005)
Thu, 2650° / 37°0.21
50 °
Cos Cob, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high50°
Average low37°
Average precipitation0.21 in
Chance of precipitation47%
Record high63° (1979)
Record low28° (2005)
Fri, 2749° / 37°0.13
49 °
Cos Cob, Friday, 27 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.13 in
Chance of precipitation32%
Record high61° (1988)
Record low26° (1974)
Sat, 2849° / 38°0.15
49 °
Cos Cob, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high49°
Average low38°
Average precipitation0.15 in
Chance of precipitation38%
Record high65° (1973)
Record low24° (1996)
Sun, 2947° / 37°0.09
47 °
Cos Cob, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high47°
Average low37°
Average precipitation0.09 in
Chance of precipitation32%
Record high64° (1990)
Record low24° (2023)
Mon, 3046° / 35°0.13
46 °
Cos Cob, Monday, 30 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.13 in
Chance of precipitation35%
Record high63° (2001)
Record low23° (1976)
Tue, 0146° / 35°0.14
46 °
Cos Cob, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.14 in
Chance of precipitation37%
Record high66° (2001)
Record low21° (1967)
Wed, 0246° / 35°0.12
46 °
Cos Cob, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.12 in
Chance of precipitation32%
Record high61° (2023)
Record low20° (1971)
Thu, 0346° / 34°0.14
46 °
Cos Cob, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.14 in
Chance of precipitation32%
Record high62° (1998)
Record low14° (1976)
Fri, 0445° / 33°0.11
45 °
Cos Cob, Friday, 4 December
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.11 in
Chance of precipitation25%
Record high69° (1998)
Record low16° (1989)
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.