Monthly outlook for Cos Cob, CT: average high 57.4°, average low 44.8°. That is 2° above the climate normal for November. Precipitation is expected on 3 days (about 0.9 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 5 November (70.5°), the coolest 17 November (31.5°).
57.4°/44.8°
Average high / low
+2°
Above normal
3 / 5
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
2 November – 11 November
62.9°
55.5°
+4.1°
12 November – 21 November
48.3°
50.5°
-1.2°
22 November – 1 December
at normal
48.1°
—
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).
Tue, 0367° / 43°0
67 °
Cos Cob, Tuesday, 3 November
Overcast. High 67°, low 43°.
Pressure30.27 inHg
Wind6.6 mph SW
Humidity43%
Visibility6.2 mi
Dew point42°
Wed, 0469° / 50°0
69 °
Cos Cob, Wednesday, 4 November
Clear. High 69°, low 50°.
Pressure30.15 inHg
Wind6.7 mph SW
Humidity58%
Visibility6.2 mi
Dew point53°
Thu, 0570° / 58°0.34
70 °
Cos Cob, Thursday, 5 November
Rain. High 70°, low 58°.
Pressure29.91 inHg
Wind12.5 mph S
Humidity64%
Visibility6.2 mi
Dew point59°
Fri, 0669° / 61°0.33
69 °
Cos Cob, Friday, 6 November
Rain. High 69°, low 61°.
Pressure29.83 inHg
Wind5.1 mph S
Humidity91%
Visibility—
Dew point63°
Sat, 0769° / 53°0.03
69 °
Cos Cob, Saturday, 7 November
Light rain. High 69°, low 53°.
Pressure29.80 inHg
Wind11 mph W
Humidity74%
Visibility—
Dew point53°
Sun, 0857° / 47°0
57 °
Cos Cob, Sunday, 8 November
Clear. High 57°, low 47°.
Pressure29.91 inHg
Wind11.2 mph W
Humidity53%
Visibility—
Dew point35°
Mon, 0962° / 51°0.19
62 °
Cos Cob, Monday, 9 November
Light rain. High 62°, low 51°.
Pressure29.59 inHg
Wind19.6 mph SE
Humidity90%
Visibility—
Dew point54°
Tue, 1051° / 45°0.01
51 °
Cos Cob, Tuesday, 10 November
Light rain. High 51°, low 45°.
Pressure29.77 inHg
Wind16.6 mph W
Humidity54%
Visibility—
Dew point32°
Wed, 1150° / 43°0
50 °
Cos Cob, Wednesday, 11 November
Mostly clear. High 50°, low 43°.
Pressure29.80 inHg
Wind16 mph W
Humidity55%
Visibility—
Dew point32°
Thu, 1250° / 41°0
50 °
Cos Cob, Thursday, 12 November
Overcast. High 50°, low 41°.
Pressure29.91 inHg
Wind14 mph W
Humidity55%
Visibility—
Dew point30°
Fri, 1351° / 41°0
51 °
Cos Cob, Friday, 13 November
Overcast. High 51°, low 41°.
Pressure30.00 inHg
Wind7.2 mph W
Humidity55%
Visibility—
Dew point31°
Sat, 1449° / 40°0
49 °
Cos Cob, Saturday, 14 November
Overcast. High 49°, low 40°.
Pressure30.06 inHg
Wind10.8 mph N
Humidity55%
Visibility—
Dew point30°
Sun, 1549° / 37°0
49 °
Cos Cob, Sunday, 15 November
Partly cloudy. High 49°, low 37°.
Pressure29.88 inHg
Wind16.9 mph SW
Humidity56%
Visibility—
Dew point28°
Mon, 1649° / 33°0.02
49 °
Cos Cob, Monday, 16 November
Light rain. High 49°, low 33°.
Pressure29.53 inHg
Wind17.9 mph NW
Humidity55%
Visibility—
Dew point32°
Tue, 1742° / 32°0
42 °
Cos Cob, Tuesday, 17 November
Clear. High 42°, low 32°.
Pressure29.91 inHg
Wind14.9 mph W
Humidity47%
Visibility—
Dew point17°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 1850° / 39°0.08
50 °
Cos Cob, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.08 in
Chance of precipitation25%
Record high65° (1963)
Record low28° (2014)
Thu, 1950° / 38°0.07
50 °
Cos Cob, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.07 in
Chance of precipitation23%
Record high63° (1985)
Record low24° (2014)
Fri, 2050° / 38°0.13
50 °
Cos Cob, Friday, 20 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.13 in
Chance of precipitation25%
Record high69° (1985)
Record low25° (1986)
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)
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.