Weather
About Long Island Weather
Long Island’s unique geography, surrounded by both the Atlantic Ocean and Long Island Sound, means weather conditions can change quickly from one end of the Island to the other. Coastal communities often experience stronger winds, cooler summers, and warmer winters than inland areas. Seasonal concerns include summer thunderstorms, hurricanes and tropical storms, autumn nor’easters, and winter snowstorms.
This page provides a locally focused snapshot for residents and visitors with an easy-to-scan five-day forecast, live radar, and marine details like tides, water temperatures, and surf conditions. Whether you’re planning a beach day, heading out on a boat, or just need to know what’s ahead, our goal is to keep Long Islanders informed with weather that matters right here at home.
🌦 Monthly Climate Averages for Long Island, NY
| Month | Avg. High (°F) | Avg. Low (°F) | Avg. Precip. (in) |
|---|---|---|---|
| January | 39 | 25 | 3.5 |
| February | 41 | 26 | 3.1 |
| March | 49 | 34 | 4.0 |
| April | 60 | 43 | 3.8 |
| May | 70 | 53 | 3.6 |
| June | 79 | 63 | 3.5 |
| July | 84 | 69 | 3.9 |
| August | 83 | 68 | 4.0 |
| September | 76 | 61 | 3.7 |
| October | 65 | 50 | 3.9 |
| November | 54 | 40 | 4.0 |
| December | 44 | 31 | 3.8 |
