Monthly outlook for Groton, NY: average high 54.9°, average low 39.8°. That is 0.9° above the climate normal for October. Precipitation is expected on 3 days (about 1.1 inches), against a normal of 7 days and 2.2 inches. The warmest day looks like 1 November (62.9°), the coolest 24 October (32.3°).
54.9°/39.8°
Average high / low
+0.9°
Above normal
3 / 7
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
54.6°
54.2°
+0.2°
29 October – 7 November
55.5°
50.8°
+2.6°
8 November – 17 November
at normal
45.4°
—
October records over 66 years
82.4°1 October 2019All-time high
24.8°20 October 1972All-time low
Tue, 2058° / 39°0
58 °
Groton, Tuesday, 20 October
Clear. High 58°, low 39°.
Pressure30.39 inHg
Wind7.1 mph N
Humidity70%
Visibility6.2 mi
Dew point45°
Wed, 2155° / 33°0
55 °
Groton, Wednesday, 21 October
Clear. High 55°, low 33°.
Pressure30.33 inHg
Wind2.9 mph NW
Humidity64%
Visibility6.2 mi
Dew point39°
Thu, 2254° / 39°0.03
54 °
Groton, Thursday, 22 October
Light rain. High 54°, low 39°.
Pressure30.18 inHg
Wind10 mph NW
Humidity89%
Visibility2.9 mi
Dew point48°
Fri, 2349° / 34°0
49 °
Groton, Friday, 23 October
Mostly clear. High 49°, low 34°.
Pressure30.47 inHg
Wind8.5 mph N
Humidity65%
Visibility—
Dew point32°
Sat, 2455° / 32°0
55 °
Groton, Saturday, 24 October
Partly cloudy. High 55°, low 32°.
Pressure30.62 inHg
Wind7.9 mph SE
Humidity77%
Visibility—
Dew point36°
Sun, 2558° / 37°0
58 °
Groton, Sunday, 25 October
Overcast. High 58°, low 37°.
Pressure30.36 inHg
Wind14.5 mph S
Humidity62%
Visibility—
Dew point37°
Mon, 2654° / 40°0
54 °
Groton, Monday, 26 October
Clear. High 54°, low 40°.
Pressure30.33 inHg
Wind11.4 mph NW
Humidity57%
Visibility—
Dew point35°
Tue, 2753° / 42°0.14
53 °
Groton, Tuesday, 27 October
Light rain. High 53°, low 42°.
Pressure30.18 inHg
Wind9.7 mph S
Humidity72%
Visibility—
Dew point40°
Wed, 2848° / 43°0.01
48 °
Groton, Wednesday, 28 October
Light rain. High 48°, low 43°.
Pressure30.33 inHg
Wind4.5 mph NW
Humidity88%
Visibility—
Dew point41°
Thu, 2955° / 39°0
55 °
Groton, Thursday, 29 October
Overcast. High 55°, low 39°.
Pressure30.33 inHg
Wind8.7 mph SE
Humidity75%
Visibility—
Dew point41°
Fri, 3056° / 49°0
56 °
Groton, Friday, 30 October
Overcast. High 56°, low 49°.
Pressure30.33 inHg
Wind19.1 mph S
Humidity82%
Visibility—
Dew point47°
Sat, 3158° / 51°0.37
58 °
Groton, Saturday, 31 October
Light rain. High 58°, low 51°.
Pressure30.09 inHg
Wind19.1 mph S
Humidity92%
Visibility—
Dew point52°
Sun, 0163° / 47°0.56
63 °
Groton, Sunday, 1 November
Rain. High 63°, low 47°.
Pressure29.83 inHg
Wind20.6 mph SW
Humidity80%
Visibility—
Dew point48°
Mon, 0249° / 42°0
49 °
Groton, Monday, 2 November
Overcast. High 49°, low 42°.
Pressure29.83 inHg
Wind21.3 mph W
Humidity64%
Visibility—
Dew point35°
Tue, 0352° / 36°0
52 °
Groton, Tuesday, 3 November
Clear. High 52°, low 36°.
Pressure30.24 inHg
Wind5.8 mph NW
Humidity71%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0450° / 38°0.12
50 °
Groton, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.12 in
Chance of precipitation33%
Record high70° (2015)
Record low26° (1991)
Thu, 0550° / 38°0.11
50 °
Groton, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.11 in
Chance of precipitation47%
Record high70° (2022)
Record low23° (1991)
Fri, 0649° / 37°0.12
49 °
Groton, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.12 in
Chance of precipitation40%
Record high71° (2022)
Record low26° (1962)
Sat, 0748° / 36°0.1
48 °
Groton, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.1 in
Chance of precipitation47%
Record high68° (1975)
Record low12° (1962)
Sun, 0848° / 35°0.15
48 °
Groton, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.15 in
Chance of precipitation40%
Record high67° (2020)
Record low23° (1976)
Mon, 0948° / 35°0.11
48 °
Groton, Monday, 9 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.11 in
Chance of precipitation37%
Record high69° (2020)
Record low19° (2019)
Tue, 1048° / 35°0.15
48 °
Groton, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.15 in
Chance of precipitation52%
Record high69° (2020)
Record low19° (2017)
Wed, 1146° / 35°0.16
46 °
Groton, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.16 in
Chance of precipitation58%
Record high64° (2012)
Record low17° (2017)
Thu, 1245° / 33°0.16
45 °
Groton, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high45°
Average low33°
Average precipitation0.16 in
Chance of precipitation50%
Record high66° (1964)
Record low17° (2019)
Fri, 1344° / 31°0.09
44 °
Groton, Friday, 13 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.09 in
Chance of precipitation52%
Record high59° (1985)
Record low15° (2019)
Sat, 1444° / 33°0.13
44 °
Groton, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.13 in
Chance of precipitation40%
Record high64° (1994)
Record low15° (1986)
Sun, 1544° / 32°0.16
44 °
Groton, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.16 in
Chance of precipitation53%
Record high62° (1960)
Record low13° (1996)
Mon, 1644° / 32°0.13
44 °
Groton, Monday, 16 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.13 in
Chance of precipitation37%
Record high63° (1990)
Record low11° (1967)
Tue, 1743° / 31°0.14
43 °
Groton, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.14 in
Chance of precipitation47%
Record high61° (2006)
Record low13° (1972)
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, NY 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, NY 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.