Monthly outlook for Mount Sinai, NY: average high 54.2°, average low 46.9°. That is 2.3° above the climate normal for November. Precipitation is expected on 3 days (about 0.9 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 25 November (63.1°), the coolest 14 November (40.9°).
54.2°/46.9°
Average high / low
+2.3°
Above normal
3 / 5
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 November – 20 November
52°
50.9°
+0.6°
21 November – 30 November
58°
48.5°
+5.3°
1 December – 10 December
at normal
44.8°
—
November records over 66 years
79.9°1 November 2024All-time high
18.9°23 November 2018All-time low
Climate normals and records are computed from the nearest reference point — Stony Brook University (6 mi).
Thu, 1259° / 48°0.39
59 °
Mount Sinai, Thursday, 12 November
Rain. High 59°, low 48°.
Pressure29.56 inHg
Wind15.5 mph E
Humidity68%
Visibility6.2 mi
Dew point47°
Fri, 1347° / 42°0.13
47 °
Mount Sinai, Friday, 13 November
Light rain. High 47°, low 42°.
Pressure29.56 inHg
Wind20.3 mph N
Humidity82%
Visibility6.2 mi
Dew point39°
Sat, 1446° / 41°0
46 °
Mount Sinai, Saturday, 14 November
Clear. High 46°, low 41°.
Pressure29.77 inHg
Wind13.6 mph NW
Humidity57%
Visibility6.2 mi
Dew point28°
Sun, 1549° / 43°0.01
49 °
Mount Sinai, Sunday, 15 November
Light rain. High 49°, low 43°.
Pressure30.03 inHg
Wind16.3 mph NW
Humidity67%
Visibility6.2 mi
Dew point36°
Mon, 1650° / 42°0
50 °
Mount Sinai, Monday, 16 November
Overcast. High 50°, low 42°.
Pressure30.36 inHg
Wind14.4 mph NW
Humidity68%
Visibility—
Dew point34°
Tue, 1750° / 43°0
50 °
Mount Sinai, Tuesday, 17 November
Mostly clear. High 50°, low 43°.
Pressure30.45 inHg
Wind8.4 mph W
Humidity77%
Visibility—
Dew point37°
Wed, 1852° / 45°0
52 °
Mount Sinai, Wednesday, 18 November
Clear. High 52°, low 45°.
Pressure30.45 inHg
Wind7.7 mph W
Humidity61%
Visibility—
Dew point34°
Thu, 1954° / 47°0
54 °
Mount Sinai, Thursday, 19 November
Clear. High 54°, low 47°.
Pressure30.36 inHg
Wind7.8 mph NW
Humidity55%
Visibility—
Dew point33°
Fri, 2051° / 47°0
51 °
Mount Sinai, Friday, 20 November
Clear. High 51°, low 47°.
Pressure30.27 inHg
Wind6.2 mph N
Humidity56%
Visibility—
Dew point34°
Sat, 2155° / 49°0
55 °
Mount Sinai, Saturday, 21 November
Overcast. High 55°, low 49°.
Pressure30.12 inHg
Wind7.6 mph SW
Humidity49%
Visibility—
Dew point33°
Sun, 2253° / 49°0
53 °
Mount Sinai, Sunday, 22 November
Overcast. High 53°, low 49°.
Pressure30.15 inHg
Wind6.6 mph S
Humidity64%
Visibility—
Dew point40°
Mon, 2359° / 52°0
59 °
Mount Sinai, Monday, 23 November
Overcast. High 59°, low 52°.
Pressure30.12 inHg
Wind11 mph SW
Humidity78%
Visibility—
Dew point49°
Tue, 2461° / 54°0
61 °
Mount Sinai, Tuesday, 24 November
Partly cloudy. High 61°, low 54°.
Pressure30.18 inHg
Wind7.6 mph SE
Humidity80%
Visibility—
Dew point51°
Wed, 2563° / 59°0.42
63 °
Mount Sinai, Wednesday, 25 November
Rain. High 63°, low 59°.
Pressure29.88 inHg
Wind22.7 mph S
Humidity96%
Visibility—
Dew point60°
Thu, 2658° / 47°0
58 °
Mount Sinai, Thursday, 26 November
Partly cloudy. High 58°, low 47°.
Pressure30.09 inHg
Wind20.4 mph NW
Humidity60%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sun, 2948° / 38°0.11
48 °
Mount Sinai, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high48°
Average low38°
Average precipitation0.11 in
Chance of precipitation32%
Record high63° (2011)
Record low26° (2023)
Mon, 3047° / 37°0.15
47 °
Mount Sinai, Monday, 30 November
Climate normal for this date — 60-year average.
Average high47°
Average low37°
Average precipitation0.15 in
Chance of precipitation33%
Record high64° (2020)
Record low25° (1976)
Tue, 0147° / 37°0.14
47 °
Mount Sinai, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high47°
Average low37°
Average precipitation0.14 in
Chance of precipitation37%
Record high64° (2001)
Record low23° (1964)
Wed, 0246° / 36°0.14
46 °
Mount Sinai, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high46°
Average low36°
Average precipitation0.14 in
Chance of precipitation32%
Record high61° (2023)
Record low21° (1989)
Thu, 0346° / 36°0.15
46 °
Mount Sinai, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high46°
Average low36°
Average precipitation0.15 in
Chance of precipitation33%
Record high60° (2009)
Record low16° (1976)
Fri, 0445° / 35°0.12
45 °
Mount Sinai, Friday, 4 December
Climate normal for this date — 60-year average.
Average high45°
Average low35°
Average precipitation0.12 in
Chance of precipitation23%
Record high65° (1998)
Record low17° (1989)
Sat, 0544° / 35°0.17
44 °
Mount Sinai, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high44°
Average low35°
Average precipitation0.17 in
Chance of precipitation30%
Record high63° (2001)
Record low19° (2025)
Sun, 0645° / 36°0.18
45 °
Mount Sinai, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high45°
Average low36°
Average precipitation0.18 in
Chance of precipitation48%
Record high63° (2001)
Record low24° (2007)
Mon, 0744° / 35°0.15
44 °
Mount Sinai, Monday, 7 December
Climate normal for this date — 60-year average.
Average high44°
Average low35°
Average precipitation0.15 in
Chance of precipitation33%
Record high68° (1998)
Record low22° (1964)
Tue, 0842° / 33°0.11
42 °
Mount Sinai, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high42°
Average low33°
Average precipitation0.11 in
Chance of precipitation33%
Record high56° (1966)
Record low20° (2006)
Wed, 0944° / 33°0.24
44 °
Mount Sinai, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.24 in
Chance of precipitation40%
Record high60° (1991)
Record low16° (1968)
Thu, 1044° / 35°0.13
44 °
Mount Sinai, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high44°
Average low35°
Average precipitation0.13 in
Chance of precipitation42%
Record high60° (2023)
Record low11° (1968)
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.