Long Island has a climate similar to other coastal areas of the Northeastern United States; it has warm, humid summers and cold winters. The Atlantic Ocean helps bring afternoon sea breezes that temper the heat in the warmer months and limit the frequency and severity of thunderstorms.
Severe thunderstorms are not uncommon, especially when they approach the island from the mainland areas of the Bronx, Westchester County and Connecticut in the northwest. Measurable snow falls every winter and in many winters one or more intense storms (called a Nor'easter) produce blizzard conditions with snowfalls of 1–2 feet (30–60 cm) and near-hurricane force winds.
Long Island is somewhat vulnerable to hurricanes. Its northern location and relatively cool waters tend to weaken storms to below hurricane strength by the time they reach Long Island, although despite this, some storms have made landfall at Category 1 or greater strength.
In the wintertime, temperatures are warmer than areas further inland (especially in the night and early morning hours), sometimes causing a snowstorm further inland to fall as rain or mixed precipitation on the island.
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