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Current warnings over Head of the Harbor, New York
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<p>Warnings from F5Weather</a></div>

United States weather warnings are issued by various organizations under NOAA. Most from the National Weather Service, but also Storm Prediction Center and National Hurricane Center.

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Current radar over Head of the Harbor, New York red dot
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<p>Live radar from F5Weather</a></div>

Our radar is based off of US NEXRAD and Canadian weather radar sites through the quality controlled MRMS system. It compiles various sources for radar data and filters out erroneous returns such as sun spikes and ground clutter. We then colorize the precipitation based on our methods for determining precipitation type. Rain is in shades of green, mixed precipitation and freezing rain in shades of pink and snow is in shades of blue.

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Current satellite over Head of the Harbor, New York red dot
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<p>Live satellite from F5Weather</a></div>

Our satellite is from the GOES-16. It is color enhanced by using a geocolor terrain background during the day and black marble city lights at night. The daytime satellite data is Visible satellite imagery, and nighttime uses Infrared bands. The bluish clouds are fog and low cloud. The whiteest clouds are the coldest, highest cloud tops.

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Current surface weather map around Suffolk County, NY

This surface map is from the HRRR computer model. It is a 1-hour forecast, updated hourly, which is a good estimate of the current surface conditions. This map shows the current high and low pressure centers, pressure isobar contours, wind streamlines and thickness contours. It also shows the currently depicted preciptiation estimates, although this should not be a substitute for actual live radar. The purple dashed contour is the 5400m thickness line, which is often a good proxy for the rain/snow line.

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Temperatures right now near Head of the Harbor, New York

This is the latest surface temperatures as depicted by the HRRR computer model, updated hourly. Although these are not actual observations, this model is a very good representation of current conditions as it factors in observations, terrain and physics to give you more detailed temperatures in areas that do not have reporting weather stations. For the latest reports at specific locations, like in Head of the Harbor, NY please see our current conditions data on the left and right side of this page, or go to our current conditions page.

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Surface wind speed map over Head of the Harbor, NY

This map shows the latest HRRR computer model winds. This depiction of the current wind directions and speeds is an estimate from the computer model. For actual observations in Head of the Harbor, NY, see the current conditions data on the left and right side of this page, or go to our current conditions page.

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Regional 24 hour rainfall expected near Head of the Harbor, New York

This is a forecast of the amount of precipitation expected over the next 24 hours from the HRRR weather forecast model. This is only one forecast depiction, and you should check other models to get a better idea of what may happen. You can view this and other models in more detail on our main weather forecast maps page. There, you will also be able to look at forecasts beyond just 24 hours and look at forecasts out to as far as 16 days.

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Area snowfall accumulation expected around Suffolk County, New York

This is snowfall forecast, with amounts anticipated in the next 24 hours. This guidance is from the HRRR weather model. For more model forecasts out to 16 days, visit our main weather forecast maps page.

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These are Convective Outlooks from the Storm Prediction Center. Click to see Days 1-3 broken down into Tornado, Wind and Hail threats, as well as days 5-8 outlooks.

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Atlantic Hurricane and Tropical Storm Tracking Map
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<p>Hurricane Tracking from F5Weather</a></div>

Our hurricane tracking map monitors for any current or forecast tropical disturbances in the Atlantic. (See our Pacific Hurricane Tracker) Various hurricane models will draw a 'spaghetti plot' in the Atlantic Basin when a disturbance is forecast or exists, showing the system's forecast track. Once a storm has developed, the National Hurricane Center will forecast their official track. This will show up on the map along with the storm's current intensity, track and name. We will also plot some of the storm's vitals and of course the spaghetti plots from the models along with the NHC forecast track will give you an idea of where it's heading, and its forecast intensity with time.

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To view the latest computer models, visit f5wx.com for access to the weather maps and guidance that meteorologists use to make their forecasts.
 
Get access to:
  • European ECMWF HRES
  • American GFS
  • Canadian GDPS GEM
  • German DWD ICON
  • British MetOffice's UKMET Unified Model
  • American NAM
  • American HRRR
  • American NBM - National Blend of Models
  • GEFS, GEPS, MOGREPS & European Ensembles
  • Probabilities & Averages
  • 3-Ensemble Mean & more!
View Skew-T soundings, textual data tables for your location, and of course maps! Weather forecast maps of the basics like temperature, wind, pressure, humidity, dew point, cloud cover, simulated radar, travel weather, rainfall and snow are available. More advanced users can also get use out of our severe weather & tornado threat maps, as well as upper air & shear graphics.
 
See the latest forecast data as the models update.
 
F5Weather Maps

Climate Summary
(made with AI, use with caution)
Head of the Harbor, New York Climate Summary

General Climate

    •   Humid continental climate with warm, humid summers and cold, snowy winters.
    •   Influenced by its proximity to the Atlantic Ocean and Long Island Sound.

Temperature

    •   Average Annual Temperature

51.5°F (10.8°C)

    •   Average Summer Temperature (June-August)

72.8°F (22.7°C)

    •   Average Winter Temperature (December-February)

30.6°F (-0.8°C)

    •   Record High Temperature

102°F (38.9°C)

    •   Record Low Temperature

-10°F (-23.3°C)

Precipitation

    •   Average Annual Precipitation

46.9 inches (119.1 cm)

    •   Average Snowfall

24.9 inches (63.2 cm)

    •   Wettest Month

July (5.2 inches)

    •   Driest Month

February (2.8 inches)

Humidity

    •   Average Relative Humidity

72%

    •   High Humidity

Summer months (above 80%)

    •   Low Humidity

Winter months (below 60%)

Wind

    •   Prevailing Wind Direction

West-southwest

    •   Average Wind Speed

10.9 mph (17.5 km/h)

    •   Strongest Winds

Winter months (above 15 mph)

Sunshine

    •   Average Annual Sunshine

2,600 hours

    •   Sunniest Month

July (300 hours)

    •   Cloudiest Month

December (150 hours)

Other Notable Climate Features

    •   Coastal Storms

Head of the Harbor is vulnerable to coastal storms, including hurricanes and nor'easters.

    •   Sea Level Rise

The area is experiencing sea level rise due to climate change, which can lead to flooding and erosion.

    •   Urban Heat Island Effect

The nearby New York City metropolitan area can contribute to higher temperatures in Head of the Harbor.

Facts & Historical Information
(made with AI, use with caution)
Natural History

    •   Head of the Harbor is situated on the western end of Long Island, where the Nissequogue River meets Long Island Sound.

    •   The area was once a thriving salt marsh and tidal flat ecosystem, supporting diverse marine life and bird species.

Science

    •   The nearby Brookhaven National Laboratory (BNL) is a world-renowned research facility for nuclear physics, energy, and other scientific disciplines.

    •   BNL's facilities include the Relativistic Heavy Ion Collider (RHIC), which is used to study the fundamental properties of matter.

Personalities

    •   The naturalist John James Audubon visited Head of the Harbor in the 1840s and documented the abundant birdlife in the area.

    •   The writer and environmentalist Norman Mailer lived in Head of the Harbor for several years and was active in local conservation efforts.

Tourist Attractions
1.Fire Island National Seashore

(nearby): A stunning barrier island with pristine beaches, dunes, and maritime forests. Offers opportunities for swimming, sunbathing, fishing, and hiking.

2.Smith Point County Park

(nearby): A popular beach destination featuring a 1.5-mile stretch of soft sand, picnic areas, and a boardwalk. Known for its calm waters and panoramic views of the Great South Bay.

3.Sunken Meadow State Park

(nearby): A scenic park located on the north shore of Long Island. Boasts a sandy beach, a freshwater pond, and hiking trails through diverse habitats, including forests, meadows, and wetlands.

Nearby Cities:

Saint James, NY
Stony Brook, NYNissequogue, NY
Nesconset, NYVillage of the Branch, NY
East Setauket, NYLake Grove, NY
Centereach, NYSmithtown, NY
Terryville, NYLake Ronkonkoma, NY
Port Jefferson, NYPort Jefferson Station, NY
Kings Park, NYHauppauge, NY
Ronkonkoma, NYSelden, NY
Brooklyn, NY
Queens, NYManhattan, NY
Manhattan, NYStaten Island, NY
Newark, NJJersey City, NJ
Jamaica, NYYonkers, NY
Worcester, MAProvidence, RI
East Flatbush, NY