Monthly outlook for Mount Sinai, NY: average high 55.7°, average low 47.6°. That is 0.5° above the climate normal for October. Precipitation is expected on 6 days (about 4.4 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 30 October (66.9°), the coolest 31 October (39.7°).
55.7°/47.6°
Average high / low
+0.5°
Above normal
6 / 5
Wet days / normal
4.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
30 October – 8 November
60.7°
56°
+2.6°
9 November – 18 November
47.3°
51.8°
-2.5°
19 November – 28 November
at normal
49.1°
—
October records over 66 years
89.4°2 October 2019All-time high
32.7°27 October 1976All-time low
Climate normals and records are computed from the nearest reference point — Stony Brook University (6 mi).
Sat, 3155° / 40°0
55 °
Mount Sinai, Saturday, 31 October
Clear. High 55°, low 40°.
Pressure30.42 inHg
Wind6.9 mph NW
Humidity55%
Visibility6.2 mi
Dew point34°
Sun, 0159° / 47°0
59 °
Mount Sinai, Sunday, 1 November
Partly cloudy. High 59°, low 47°.
Pressure30.50 inHg
Wind6.8 mph W
Humidity59%
Visibility6.2 mi
Dew point38°
Mon, 0263° / 53°0
63 °
Mount Sinai, Monday, 2 November
Mostly clear. High 63°, low 53°.
Pressure30.36 inHg
Wind11.6 mph SW
Humidity60%
Visibility6.2 mi
Dew point45°
Tue, 0365° / 55°0
65 °
Mount Sinai, Tuesday, 3 November
Clear. High 65°, low 55°.
Pressure30.33 inHg
Wind9.1 mph SW
Humidity72%
Visibility—
Dew point49°
Wed, 0458° / 54°0.01
58 °
Mount Sinai, Wednesday, 4 November
Light rain. High 58°, low 54°.
Pressure30.30 inHg
Wind9.7 mph E
Humidity85%
Visibility—
Dew point53°
Thu, 0565° / 56°0.12
65 °
Mount Sinai, Thursday, 5 November
Light rain. High 65°, low 56°.
Pressure30.03 inHg
Wind11.9 mph SE
Humidity86%
Visibility—
Dew point57°
Fri, 0664° / 60°2.76
64 °
Mount Sinai, Friday, 6 November
Heavy rain. High 64°, low 60°.
Pressure29.53 inHg
Wind25.5 mph S
Humidity96%
Visibility—
Dew point63°
Sat, 0760° / 48°0.01
60 °
Mount Sinai, Saturday, 7 November
Light rain. High 60°, low 48°.
Pressure29.62 inHg
Wind18.7 mph NW
Humidity76%
Visibility—
Dew point51°
Sun, 0851° / 44°0
51 °
Mount Sinai, Sunday, 8 November
Clear. High 51°, low 44°.
Pressure30.03 inHg
Wind18.6 mph NW
Humidity47%
Visibility—
Dew point27°
Mon, 0946° / 42°0
46 °
Mount Sinai, Monday, 9 November
Overcast. High 46°, low 42°.
Pressure30.15 inHg
Wind11.4 mph N
Humidity49%
Visibility—
Dew point26°
Tue, 1050° / 43°0.39
50 °
Mount Sinai, Tuesday, 10 November
Light rain. High 50°, low 43°.
Pressure29.97 inHg
Wind21.9 mph NE
Humidity86%
Visibility—
Dew point41°
Wed, 1146° / 43°0.22
46 °
Mount Sinai, Wednesday, 11 November
Light rain. High 46°, low 43°.
Pressure29.77 inHg
Wind18 mph NE
Humidity89%
Visibility—
Dew point41°
Thu, 1244° / 40°0
44 °
Mount Sinai, Thursday, 12 November
Clear. High 44°, low 40°.
Pressure29.94 inHg
Wind11.9 mph N
Humidity54%
Visibility—
Dew point26°
Fri, 1350° / 44°0.69
50 °
Mount Sinai, Friday, 13 November
Rain. High 50°, low 44°.
Pressure29.83 inHg
Wind14.6 mph E
Humidity79%
Visibility—
Dew point41°
Sat, 1448° / 45°0.2
48 °
Mount Sinai, Saturday, 14 November
Rain. High 48°, low 45°.
Pressure30.06 inHg
Wind11.3 mph N
Humidity78%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 1552° / 41°0.12
52 °
Mount Sinai, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high52°
Average low41°
Average precipitation0.12 in
Chance of precipitation42%
Record high71° (1993)
Record low25° (1967)
Mon, 1651° / 41°0.14
51 °
Mount Sinai, Monday, 16 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.14 in
Chance of precipitation38%
Record high65° (2006)
Record low24° (1967)
Tue, 1750° / 40°0.15
50 °
Mount Sinai, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.15 in
Chance of precipitation33%
Record high65° (2006)
Record low31° (1967)
Wed, 1850° / 41°0.08
50 °
Mount Sinai, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high50°
Average low41°
Average precipitation0.08 in
Chance of precipitation27%
Record high63° (2024)
Record low29° (2014)
Thu, 1950° / 40°0.07
50 °
Mount Sinai, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.07 in
Chance of precipitation25%
Record high61° (2021)
Record low25° (2014)
Fri, 2050° / 40°0.13
50 °
Mount Sinai, Friday, 20 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.13 in
Chance of precipitation28%
Record high66° (1985)
Record low28° (1986)
Sat, 2149° / 39°0.11
49 °
Mount Sinai, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high49°
Average low39°
Average precipitation0.11 in
Chance of precipitation33%
Record high61° (1991)
Record low21° (1987)
Sun, 2248° / 39°0.16
48 °
Mount Sinai, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high48°
Average low39°
Average precipitation0.16 in
Chance of precipitation40%
Record high61° (2007)
Record low20° (2018)
Mon, 2347° / 38°0.13
47 °
Mount Sinai, Monday, 23 November
Climate normal for this date — 60-year average.
Average high47°
Average low38°
Average precipitation0.13 in
Chance of precipitation22%
Record high64° (1992)
Record low19° (2018)
Tue, 2449° / 39°0.1
49 °
Mount Sinai, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high49°
Average low39°
Average precipitation0.1 in
Chance of precipitation33%
Record high62° (1979)
Record low25° (2013)
Wed, 2549° / 38°0.15
49 °
Mount Sinai, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high49°
Average low38°
Average precipitation0.15 in
Chance of precipitation33%
Record high64° (1979)
Record low24° (2005)
Thu, 2650° / 39°0.22
50 °
Mount Sinai, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.22 in
Chance of precipitation43%
Record high64° (1979)
Record low26° (2023)
Fri, 2750° / 39°0.13
50 °
Mount Sinai, Friday, 27 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.13 in
Chance of precipitation37%
Record high61° (1986)
Record low27° (1978)
Sat, 2850° / 40°0.17
50 °
Mount Sinai, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.17 in
Chance of precipitation35%
Record high62° (1990)
Record low24° (2002)
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 Mount Sinai, 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 Mount Sinai, 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.