Monthly outlook for Center Groton, CT: average high 53°, average low 39.6°. That is 2° above the climate normal for November. Precipitation is expected on 1 day (about 1.1 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 19 November (61.3°), the coolest 17 November (30.3°).
53°/39.6°
Average high / low
+2°
Above normal
1 / 5
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 November – 24 November
54.1°
49.7°
+2.4°
25 November – 4 December
51.2°
47.6°
+1.9°
5 December – 14 December
at normal
43.4°
—
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 (8 mi).
Mon, 1646° / 33°0
46 °
Center Groton, Monday, 16 November
Overcast. High 46°, low 33°.
Pressure30.33 inHg
Wind8.8 mph NW
Humidity56%
Visibility6.2 mi
Dew point32°
Tue, 1754° / 30°0
54 °
Center Groton, Tuesday, 17 November
Clear. High 54°, low 30°.
Pressure30.42 inHg
Wind5.1 mph W
Humidity54%
Visibility6.2 mi
Dew point36°
Wed, 1859° / 39°0
59 °
Center Groton, Wednesday, 18 November
Partly cloudy. High 59°, low 39°.
Pressure30.39 inHg
Wind7 mph NW
Humidity43%
Visibility6.2 mi
Dew point36°
Thu, 1961° / 40°0
61 °
Center Groton, Thursday, 19 November
Partly cloudy. High 61°, low 40°.
Pressure30.36 inHg
Wind3.6 mph SW
Humidity42%
Visibility6.2 mi
Dew point37°
Fri, 2061° / 43°0
61 °
Center Groton, Friday, 20 November
Clear. High 61°, low 43°.
Pressure30.21 inHg
Wind8.7 mph W
Humidity53%
Visibility—
Dew point37°
Sat, 2155° / 42°0
55 °
Center Groton, Saturday, 21 November
Mostly clear. High 55°, low 42°.
Pressure30.36 inHg
Wind8.1 mph E
Humidity69%
Visibility—
Dew point41°
Sun, 2256° / 47°0
56 °
Center Groton, Sunday, 22 November
Light rain. High 56°, low 47°.
Pressure30.18 inHg
Wind7 mph E
Humidity88%
Visibility—
Dew point49°
Mon, 2355° / 47°0
55 °
Center Groton, Monday, 23 November
Overcast. High 55°, low 47°.
Pressure29.83 inHg
Wind13.3 mph N
Humidity67%
Visibility—
Dew point42°
Tue, 2445° / 43°0.01
45 °
Center Groton, Tuesday, 24 November
Light rain. High 45°, low 43°.
Pressure30.09 inHg
Wind13.7 mph N
Humidity84%
Visibility—
Dew point40°
Wed, 2547° / 36°0
47 °
Center Groton, Wednesday, 25 November
Overcast. High 47°, low 36°.
Pressure30.36 inHg
Wind8.2 mph N
Humidity66%
Visibility—
Dew point31°
Thu, 2653° / 37°0
53 °
Center Groton, Thursday, 26 November
Clear. High 53°, low 37°.
Pressure30.33 inHg
Wind7.4 mph W
Humidity48%
Visibility—
Dew point27°
Fri, 2753° / 39°0
53 °
Center Groton, Friday, 27 November
Overcast. High 53°, low 39°.
Pressure30.42 inHg
Wind5.8 mph NE
Humidity64%
Visibility—
Dew point36°
Sat, 2858° / 50°1.1
58 °
Center Groton, Saturday, 28 November
Heavy rain. High 58°, low 50°.
Pressure30.09 inHg
Wind16.9 mph S
Humidity85%
Visibility—
Dew point51°
Sun, 2955° / 39°0.02
55 °
Center Groton, Sunday, 29 November
Light rain. High 55°, low 39°.
Pressure29.77 inHg
Wind15.9 mph NW
Humidity69%
Visibility—
Dew point40°
Mon, 3042° / 32°0
42 °
Center Groton, Monday, 30 November
Mostly clear. High 42°, low 32°.
Pressure30.18 inHg
Wind13.2 mph NW
Humidity47%
Visibility—
Dew point19°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0147° / 36°0.13
47 °
Center Groton, 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 °
Center Groton, 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 °
Center Groton, 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 °
Center Groton, 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 °
Center Groton, 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 °
Center Groton, 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 °
Center Groton, 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 °
Center Groton, 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 °
Center Groton, 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 °
Center Groton, 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 °
Center Groton, 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 °
Center Groton, 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 °
Center Groton, 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)
Mon, 1442° / 31°0.17
42 °
Center Groton, Monday, 14 December
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.17 in
Chance of precipitation38%
Record high58° (2015)
Record low10° (2005)
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 Center Groton, 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 Center Groton, 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.