Monthly outlook for Cos Cob, CT: average high 60.4°, average low 47.5°. That is 2.8° above the climate normal for October. Precipitation is expected on 5 days (about 1.4 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 3 November (69.7°), the coolest 1 November (35.9°).
60.4°/47.5°
Average high / low
+2.8°
Above normal
5 / 5
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
29 October – 7 November
63°
56.9°
+3.4°
8 November – 17 November
56°
52.1°
+2.2°
18 November – 27 November
at normal
49.1°
—
October records over 66 years
89.8°2 October 2019All-time high
31.5°31 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Pemberwick (4 mi).
Fri, 3069° / 47°0
69 °
Cos Cob, Friday, 30 October
Clear. High 69°, low 47°.
Pressure30.06 inHg
Wind10.6 mph NW
Humidity55%
Visibility6.2 mi
Dew point50°
Sat, 3154° / 40°0
54 °
Cos Cob, Saturday, 31 October
Mostly clear. High 54°, low 40°.
Pressure30.45 inHg
Wind9.1 mph NW
Humidity47%
Visibility6.2 mi
Dew point30°
Sun, 0157° / 36°0
57 °
Cos Cob, Sunday, 1 November
Partly cloudy. High 57°, low 36°.
Pressure30.50 inHg
Wind4.2 mph NW
Humidity48%
Visibility6.2 mi
Dew point35°
Mon, 0267° / 41°0
67 °
Cos Cob, Monday, 2 November
Overcast. High 67°, low 41°.
Pressure30.30 inHg
Wind9.3 mph SW
Humidity52%
Visibility—
Dew point40°
Tue, 0370° / 47°0
70 °
Cos Cob, Tuesday, 3 November
Partly cloudy. High 70°, low 47°.
Pressure30.27 inHg
Wind8.8 mph E
Humidity55%
Visibility—
Dew point46°
Wed, 0459° / 55°0
59 °
Cos Cob, Wednesday, 4 November
Light rain. High 59°, low 55°.
Pressure30.42 inHg
Wind11.3 mph E
Humidity80%
Visibility—
Dew point51°
Thu, 0567° / 58°0.24
67 °
Cos Cob, Thursday, 5 November
Light rain. High 67°, low 58°.
Pressure30.12 inHg
Wind16.3 mph S
Humidity89%
Visibility—
Dew point59°
Fri, 0665° / 53°0.75
65 °
Cos Cob, Friday, 6 November
Rain. High 65°, low 53°.
Pressure29.85 inHg
Wind19.6 mph S
Humidity77%
Visibility—
Dew point53°
Sat, 0756° / 47°0
56 °
Cos Cob, Saturday, 7 November
Clear. High 56°, low 47°.
Pressure29.94 inHg
Wind16 mph N
Humidity50%
Visibility—
Dew point34°
Sun, 0853° / 42°0
53 °
Cos Cob, Sunday, 8 November
Clear. High 53°, low 42°.
Pressure30.24 inHg
Wind11.5 mph N
Humidity51%
Visibility—
Dew point30°
Mon, 0952° / 42°0
52 °
Cos Cob, Monday, 9 November
Mostly clear. High 52°, low 42°.
Pressure30.36 inHg
Wind5.9 mph N
Humidity53%
Visibility—
Dew point32°
Tue, 1060° / 50°0.08
60 °
Cos Cob, Tuesday, 10 November
Light rain. High 60°, low 50°.
Pressure30.21 inHg
Wind6.2 mph SE
Humidity77%
Visibility—
Dew point49°
Wed, 1158° / 53°0.06
58 °
Cos Cob, Wednesday, 11 November
Light rain. High 58°, low 53°.
Pressure30.03 inHg
Wind7.7 mph NE
Humidity85%
Visibility—
Dew point51°
Thu, 1258° / 50°0
58 °
Cos Cob, Thursday, 12 November
Partly cloudy. High 58°, low 50°.
Pressure30.03 inHg
Wind7.8 mph S
Humidity65%
Visibility—
Dew point43°
Fri, 1356° / 54°0.31
56 °
Cos Cob, Friday, 13 November
Rain. High 56°, low 54°.
Pressure29.88 inHg
Wind10.2 mph SW
Humidity86%
Visibility—
Dew point50°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 1451° / 39°0.08
51 °
Cos Cob, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.08 in
Chance of precipitation23%
Record high67° (1989)
Record low25° (1986)
Sun, 1552° / 39°0.1
52 °
Cos Cob, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high52°
Average low39°
Average precipitation0.1 in
Chance of precipitation37%
Record high73° (1993)
Record low24° (1967)
Mon, 1651° / 39°0.12
51 °
Cos Cob, Monday, 16 November
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.12 in
Chance of precipitation28%
Record high69° (2001)
Record low23° (1967)
Tue, 1750° / 38°0.11
50 °
Cos Cob, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.11 in
Chance of precipitation28%
Record high64° (2006)
Record low26° (2019)
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)
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.