Head of the Harbor, NY
Climate overview — based on NOAA 1991-2020 normals from SETAUKET STRONG, NY US.
Year-round temperatures (°F)
Avg high
Avg low
Climate summary
Head of the Harbor has an annual average temperature of 53.4°F with about 0 inches of precipitation per year. The warmest month is July (average high 83.0°F), and the coldest is January (average low 25.9°F).
Pleasant months
2 / 12
avg high 65–80°F, low ≥ 50°F
Annual swing
41.7°F
warmest to coldest month
Best time to visit Head of the Harbor
Full guide →Climate change signal
All-time records →24 of 366 (6.6%) of Head of the Harbor's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1880s | 3 | |
| 1890s | 19 | |
| 1900s | 9 | |
| 1910s | 11 | |
| 1920s | 16 | |
| 1930s | 14 | |
| 1940s | 47 | |
| 1950s | 20 | |
| 1960s | 19 | |
| 1970s | 34 | |
| 1980s | 18 | |
| 1990s | 59 | |
| 2000s | 61 | |
| 2010s | 36 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 39.6°F | 25.9°F | 32.7°F | in | — | — |
| February | 41.2°F | 25.9°F | 33.5°F | in | — | — |
| March | 48.4°F | 31.8°F | 40.1°F | in | — | — |
| April | 59.7°F | 40.6°F | 50.2°F | in | — | — |
| May | 69.4°F | 49.6°F | 59.5°F | in | — | — |
| June | 77.9°F | 59.9°F | 68.9°F | in | — | — |
| July | 83.0°F | 65.9°F | 74.4°F | in | — | — |
| August | 82.3°F | 65.0°F | 73.7°F | in | — | — |
| September | 75.3°F | 59.5°F | 67.4°F | in | — | — |
| October | 63.7°F | 48.6°F | 56.2°F | in | — | — |
| November | 53.3°F | 39.3°F | 46.3°F | in | — | — |
| December | 44.6°F | 31.1°F | 37.9°F | in | — | — |
Last spring / first fall frost
All-time recordsHottest, coldest, wettest
Planting calendarWhat to plant, and when