National Weather Service- Check the current weather conditions for Ellis Island.
General Weather: Ellis Island is located in New York Harbor, which falls into the Marine Zone Forecast, weather varies considerably throughout the year. The average annual temperature is 55 °F (13 °C) but each season has its own character and casts a unique mood over the island. Being that Ellis Island is in the harbor, temperatures and weather conditions can vary greatly from day-to-day. Most of the exhitbits are located within the Main Building, so the majority of one's visit to Ellis Island will be protected from the elements. Dress for the weather to enjoy your visit to Liberty Island, travelling on the boat, as well as the Wall of Honor on Ellis Island.
Cool to warm weather; 50-70° F (10-21° C)
Temperatures become warmer, weather can be variable. Dress in layers to adjust the change in weather and spring showers.
Daytime: 70-90°+ F (26-32°+ C)
Summers are warm to hot and humid. Lines for the ferries can be long in the summer months so travel with refillable water bottles.
Like Spring, expect variable weather. 50-70° F (10-21° C)
Dress in layers to adjust to the changing weather.
Cold; 30° F (-1-5° C) low is usually around -5° F (-20° C)
It is typically colder and more windy in New York Harbor than in elsewhere in the New York City metropolitan area. Winters are cold and damp but many days can be clear and sunny. Average snow accumulation for the season is 25 to 35 inches (63 to 89 cm).