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Mount Sinai weather

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Mount Sinai weather alerts and warnings

active National Weather Service watches, warnings and advisories

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Mount Sinai weather in numbers

measured normals and 10 years of recorded weather

Mount Sinai swings 54°F across the year, from 81°F highs in July to 27°F lows in February, and April is usually the wettest month in a year that brings about 51 in of precipitation. Over 10 years of recorded weather it averages 81 days a year at 77°F or above, 17 of them at 86°F or above, 65 frost nights, and rain on 130 days.

Warmest month
July
81°F average high
Coldest month
February
27°F average low
Wettest month
April
51 in a year
Comfortable
4 months
May, June, September and October
Residents
12,000
share this forecast
Warm days
81 days
a year at 77°F or above
Frost nights
65 nights
a year below 32°F
Rain days
130 days
a year with 0.04 in or more

Day counts are from the ERA5 reanalysis for Mount Sinai’s grid square, 2016 to 2025, counted the same way for every city so the numbers compare. A reanalysis square is an area, not a weather station, so it is good for counting days and not for a single day’s record.

The weather map: all three models at once

NWS, American, European side by side around Mount Sinai and nearby towns.Live rain radar →
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Mount Sinai hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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Mount Sinai 10-day forecast, out to 14 days

where the models agree, and where they split

Mount Sinai, New York (NY) is at its warmest in Jul (average highs near 81°F) and coldest in Feb (lows around 27°F), with roughly 51 in of precipitation across the year. Below, compare what NWS, American, European forecast for Mount Sinai right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Mount Sinai climate by month

average daytime high and overnight low across a typical year (1991-2020)
Jan
39°
28°
Feb
40°
27°
Mar
46°
32°
Apr
57°
42°
May
66°
51°
Jun
76°
61°
Jul
81°
68°
Aug
80°
67°
Sep
73°
61°
Oct
63°
50°
Nov
52°
40°
Dec
43°
33°

Source: 1991-2020 averages, ERA5 for this place adjusted with NASA POWER.

How the weather around Mount Sinai has changed since 1995

Mount Sinai sits in the same roughly 50 km square of NASA's reanalysis as Bridgeport. That square ran 1.7°F warmer in 2015-2024 than in 1995-2004. See the full 30-year picture on the Bridgeport page.

Which forecast is most accurate in the US?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
93
/100rank #1
91±0.9°F97±1.1 mph9396% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
82
/100rank #2
83±1.7°F94±2.0 mph7184% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.

NWSNational Blend (NBM)
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AmericanNOAA GFS
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EuropeanECMWF
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One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Common questions

What's the weather in Mount Sinai today?
On this page we show what NWS, American, European each forecast for Mount Sinai today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Mount Sinai today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Mount Sinai and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Mount Sinai?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the Mount Sinai forecast is reliable, and when they split you should expect surprises. See our tested US accuracy scoreboard for how the models compare.
What is the warmest month in Mount Sinai?
July is typically the warmest month in Mount Sinai, with average highs around 81°F.
How cold does Mount Sinai get?
The coldest month in Mount Sinai is February, when overnight lows average about 27°F.
How much rain does Mount Sinai get?
Mount Sinai sees roughly 51 in of precipitation a year, with April usually the wettest month.

Nearby

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