Monthly outlook for Groton Long Point, CT: average high 50.8°, average low 40.3°. That is 0.7° above the climate normal for November. Precipitation is expected on 2 days (about 0.2 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 19 November (59.7°), the coolest 17 November (33.1°).
50.8°/40.3°
Average high / low
+0.7°
Above normal
2 / 5
Wet days / normal
0.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 November – 23 November
52°
50°
+1.2°
24 November – 3 December
48.8°
48°
+0.4°
4 December – 13 December
at normal
43.7°
—
November records over 66 years
74.3°1 November 2024All-time high
15.1°22 November 2018All-time low
Climate normals and records are computed from the nearest reference point — Fishers Island (3 mi).
Sun, 1547° / 37°0
47 °
Groton Long Point, Sunday, 15 November
Partly cloudy. High 47°, low 37°.
Pressure30.06 inHg
Wind11.8 mph NW
Humidity54%
Visibility6.2 mi
Dew point29°
Mon, 1649° / 34°0
49 °
Groton Long Point, Monday, 16 November
Partly cloudy. High 49°, low 34°.
Pressure30.33 inHg
Wind8.6 mph NW
Humidity53%
Visibility6.2 mi
Dew point32°
Tue, 1752° / 33°0
52 °
Groton Long Point, Tuesday, 17 November
Clear. High 52°, low 33°.
Pressure30.42 inHg
Wind6 mph NW
Humidity57%
Visibility6.2 mi
Dew point37°
Wed, 1858° / 40°0
58 °
Groton Long Point, Wednesday, 18 November
Mostly clear. High 58°, low 40°.
Pressure30.39 inHg
Wind8.5 mph W
Humidity57%
Visibility—
Dew point35°
Thu, 1960° / 42°0
60 °
Groton Long Point, Thursday, 19 November
Partly cloudy. High 60°, low 42°.
Pressure30.39 inHg
Wind11.2 mph SW
Humidity49%
Visibility—
Dew point34°
Fri, 2058° / 51°0
58 °
Groton Long Point, Friday, 20 November
Clear. High 58°, low 51°.
Pressure30.09 inHg
Wind16.3 mph SW
Humidity65%
Visibility—
Dew point43°
Sat, 2148° / 40°0
48 °
Groton Long Point, Saturday, 21 November
Partly cloudy. High 48°, low 40°.
Pressure30.45 inHg
Wind13.8 mph N
Humidity42%
Visibility—
Dew point21°
Sun, 2247° / 40°0
47 °
Groton Long Point, Sunday, 22 November
Partly cloudy. High 47°, low 40°.
Pressure30.47 inHg
Wind8.9 mph SE
Humidity58%
Visibility—
Dew point31°
Mon, 2356° / 49°0.18
56 °
Groton Long Point, Monday, 23 November
Light rain. High 56°, low 49°.
Pressure30.21 inHg
Wind19 mph S
Humidity84%
Visibility—
Dew point49°
Tue, 2454° / 42°0
54 °
Groton Long Point, Tuesday, 24 November
Clear. High 54°, low 42°.
Pressure30.03 inHg
Wind15 mph W
Humidity64%
Visibility—
Dew point37°
Wed, 2548° / 39°0
48 °
Groton Long Point, Wednesday, 25 November
Clear. High 48°, low 39°.
Pressure30.30 inHg
Wind10.2 mph W
Humidity63%
Visibility—
Dew point31°
Thu, 2651° / 45°0.01
51 °
Groton Long Point, Thursday, 26 November
Light rain. High 51°, low 45°.
Pressure30.18 inHg
Wind16.8 mph SW
Humidity67%
Visibility—
Dew point39°
Fri, 2747° / 37°0.01
47 °
Groton Long Point, Friday, 27 November
Light rain. High 47°, low 37°.
Pressure30.21 inHg
Wind17.6 mph NW
Humidity52%
Visibility—
Dew point24°
Sat, 2847° / 37°0
47 °
Groton Long Point, Saturday, 28 November
Overcast. High 47°, low 37°.
Pressure30.09 inHg
Wind8.8 mph NW
Humidity55%
Visibility—
Dew point27°
Sun, 2946° / 44°0.05
46 °
Groton Long Point, Sunday, 29 November
Light rain. High 46°, low 44°.
Pressure29.91 inHg
Wind12.1 mph NW
Humidity89%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 3047° / 36°0.14
47 °
Groton Long Point, Monday, 30 November
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.14 in
Chance of precipitation33%
Record high62° (2020)
Record low23° (2013)
Tue, 0147° / 36°0.13
47 °
Groton Long Point, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.13 in
Chance of precipitation42%
Record high65° (2001)
Record low20° (1989)
Wed, 0246° / 35°0.14
46 °
Groton Long Point, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.14 in
Chance of precipitation28%
Record high61° (2006)
Record low16° (1989)
Thu, 0346° / 34°0.17
46 °
Groton Long Point, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.17 in
Chance of precipitation28%
Record high62° (2009)
Record low14° (1976)
Fri, 0445° / 33°0.11
45 °
Groton Long Point, Friday, 4 December
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.11 in
Chance of precipitation28%
Record high66° (1998)
Record low13° (1989)
Sat, 0544° / 33°0.18
44 °
Groton Long Point, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.18 in
Chance of precipitation28%
Record high65° (2001)
Record low15° (2025)
Sun, 0645° / 34°0.17
45 °
Groton Long Point, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.17 in
Chance of precipitation45%
Record high64° (2001)
Record low21° (2007)
Mon, 0744° / 33°0.14
44 °
Groton Long Point, Monday, 7 December
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.14 in
Chance of precipitation30%
Record high69° (1998)
Record low13° (1964)
Tue, 0842° / 31°0.1
42 °
Groton Long Point, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.1 in
Chance of precipitation28%
Record high58° (2011)
Record low17° (1970)
Wed, 0944° / 31°0.2
44 °
Groton Long Point, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.2 in
Chance of precipitation35%
Record high60° (1991)
Record low12° (1968)
Thu, 1044° / 33°0.13
44 °
Groton Long Point, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.13 in
Chance of precipitation37%
Record high58° (2023)
Record low8° (1968)
Fri, 1144° / 32°0.26
44 °
Groton Long Point, Friday, 11 December
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.26 in
Chance of precipitation40%
Record high61° (1971)
Record low10° (1977)
Sat, 1243° / 31°0.19
43 °
Groton Long Point, Saturday, 12 December
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.19 in
Chance of precipitation38%
Record high60° (2021)
Record low7° (1988)
Sun, 1343° / 31°0.09
43 °
Groton Long Point, Sunday, 13 December
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.09 in
Chance of precipitation27%
Record high58° (1983)
Record low10° (1960)
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 Groton Long Point, 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 Groton Long Point, 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.