Monthly outlook for Greenwich, NY: average high 58.5°, average low 43.3°. That is 1° above the climate normal for October. Precipitation is expected on 4 days (about 1.6 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 24 October (71.7°), the coolest 19 October (31.7°).
58.5°/43.3°
Average high / low
+1°
Above normal
4 / 5
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
57.9°
57.9°
0°
22 October – 31 October
59.5°
53.7°
+3.2°
1 November – 10 November
at normal
50.5°
—
October records over 66 years
82.4°7 October 1963All-time high
23.9°31 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Moreau (12 mi).
Tue, 1364° / 54°0.69
64 °
Greenwich, Tuesday, 13 October
Rain. High 64°, low 54°.
Pressure29.85 inHg
Wind11.2 mph S
Humidity96%
Visibility1.7 mi
Dew point59°
Wed, 1466° / 57°0.02
66 °
Greenwich, Wednesday, 14 October
Light rain. High 66°, low 57°.
Pressure29.83 inHg
Wind8.2 mph W
Humidity65%
Visibility6.2 mi
Dew point55°
Thu, 1556° / 43°0
56 °
Greenwich, Thursday, 15 October
Mostly clear. High 56°, low 43°.
Pressure30.24 inHg
Wind7.2 mph NE
Humidity51%
Visibility6.2 mi
Dew point36°
Fri, 1656° / 46°0.54
56 °
Greenwich, Friday, 16 October
Rain. High 56°, low 46°.
Pressure29.53 inHg
Wind8.4 mph S
Humidity96%
Visibility1.9 mi
Dew point53°
Sat, 1745° / 34°0.04
45 °
Greenwich, Saturday, 17 October
Light rain. High 45°, low 34°.
Pressure30.06 inHg
Wind16 mph NW
Humidity60%
Visibility—
Dew point30°
Sun, 1852° / 34°0
52 °
Greenwich, Sunday, 18 October
Overcast. High 52°, low 34°.
Pressure30.42 inHg
Wind10.7 mph W
Humidity50%
Visibility—
Dew point30°
Mon, 1955° / 32°0
55 °
Greenwich, Monday, 19 October
Clear. High 55°, low 32°.
Pressure30.56 inHg
Wind12.3 mph S
Humidity47%
Visibility—
Dew point27°
Tue, 2058° / 39°0
58 °
Greenwich, Tuesday, 20 October
Overcast. High 58°, low 39°.
Pressure30.42 inHg
Wind5.1 mph S
Humidity63%
Visibility—
Dew point38°
Wed, 2160° / 40°0
60 °
Greenwich, Wednesday, 21 October
Clear. High 60°, low 40°.
Pressure30.27 inHg
Wind4.4 mph SE
Humidity69%
Visibility—
Dew point42°
Thu, 2259° / 41°0
59 °
Greenwich, Thursday, 22 October
Partly cloudy. High 59°, low 41°.
Pressure30.30 inHg
Wind5.3 mph N
Humidity66%
Visibility—
Dew point40°
Fri, 2358° / 42°0
58 °
Greenwich, Friday, 23 October
Overcast. High 58°, low 42°.
Pressure30.21 inHg
Wind7.7 mph SW
Humidity74%
Visibility—
Dew point42°
Sat, 2472° / 54°0
72 °
Greenwich, Saturday, 24 October
Overcast. High 72°, low 54°.
Pressure29.85 inHg
Wind11.5 mph SW
Humidity65%
Visibility—
Dew point49°
Sun, 2560° / 48°0.31
60 °
Greenwich, Sunday, 25 October
Rain. High 60°, low 48°.
Pressure29.68 inHg
Wind14.2 mph W
Humidity84%
Visibility—
Dew point52°
Mon, 2652° / 42°0
52 °
Greenwich, Monday, 26 October
Overcast. High 52°, low 42°.
Pressure30.21 inHg
Wind5.7 mph N
Humidity74%
Visibility—
Dew point39°
Tue, 2757° / 38°0
57 °
Greenwich, Tuesday, 27 October
Partly cloudy. High 57°, low 38°.
Pressure30.27 inHg
Wind4 mph S
Humidity69%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2853° / 39°0.2
53 °
Greenwich, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.2 in
Chance of precipitation32%
Record high74° (1984)
Record low25° (1976)
Thu, 2952° / 37°0.14
52 °
Greenwich, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.14 in
Chance of precipitation35%
Record high67° (1989)
Record low28° (1969)
Fri, 3052° / 37°0.1
52 °
Greenwich, Friday, 30 October
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.1 in
Chance of precipitation23%
Record high69° (2024)
Record low29° (2002)
Sat, 3153° / 37°0.11
53 °
Greenwich, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.11 in
Chance of precipitation23%
Record high74° (2024)
Record low24° (2020)
Sun, 0153° / 39°0.13
53 °
Greenwich, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.13 in
Chance of precipitation37%
Record high72° (1974)
Record low28° (2020)
Mon, 0253° / 39°0.15
53 °
Greenwich, Monday, 2 November
Climate normal for this date — 60-year average.
Average high53°
Average low39°
Average precipitation0.15 in
Chance of precipitation38%
Record high72° (1982)
Record low25° (1965)
Tue, 0352° / 38°0.15
52 °
Greenwich, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.15 in
Chance of precipitation42%
Record high70° (1982)
Record low27° (2002)
Wed, 0451° / 37°0.09
51 °
Greenwich, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.09 in
Chance of precipitation25%
Record high69° (1994)
Record low27° (2013)
Thu, 0551° / 37°0.15
51 °
Greenwich, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.15 in
Chance of precipitation40%
Record high71° (2022)
Record low26° (1965)
Fri, 0651° / 38°0.12
51 °
Greenwich, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.12 in
Chance of precipitation35%
Record high72° (2022)
Record low26° (2012)
Sat, 0749° / 36°0.07
49 °
Greenwich, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.07 in
Chance of precipitation37%
Record high68° (2020)
Record low22° (2002)
Sun, 0848° / 35°0.13
48 °
Greenwich, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.13 in
Chance of precipitation27%
Record high69° (1975)
Record low21° (2002)
Mon, 0948° / 35°0.14
48 °
Greenwich, Monday, 9 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.14 in
Chance of precipitation32%
Record high66° (1975)
Record low22° (1971)
Tue, 1049° / 35°0.14
49 °
Greenwich, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.14 in
Chance of precipitation48%
Record high67° (2020)
Record low22° (2017)
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 Greenwich, 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 Greenwich, 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.