Our Proprietary 10-Day Forecast

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Current warnings over Iselin, New Jersey
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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 Iselin, New Jersey 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 Iselin, New Jersey 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 Middlesex County, NJ

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 Iselin, New Jersey

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 Iselin, NJ 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 Iselin, NJ

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 Iselin, NJ, 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 Iselin, New Jersey

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 Middlesex County, New Jersey

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.
 
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  • GEFS, GEPS, MOGREPS & European Ensembles
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  • 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.
 
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Climate Summary
(made with AI, use with caution)
Iselin, NJ

Climate Summary

Temperature

    •   Average annual temperature: 54.6°F (12.6°C)
    •   Average summer temperature (June-August): 75.2°F (24°C)
    •   Average winter temperature (December-February): 33.6°F (0.9°C)

Precipitation

    •   Average annual precipitation: 46.5 inches (118 cm)
    •   Average number of rainy days per year: 115
    •   Average snowfall per year: 23.6 inches (60 cm)

Humidity

    •   Average annual relative humidity: 71%
    •   Highest humidity in summer (July-August): 75%
    •   Lowest humidity in winter (January-February): 65%

Wind

    •   Average wind speed: 9.2 mph (14.8 km/h)
    •   Prevailing wind direction: Southwest

Sunshine

    •   Average annual sunshine hours: 2,600
    •   Highest sunshine hours in summer (June-August): 300 hours per month
    •   Lowest sunshine hours in winter (December-February): 150 hours per month

Extreme Weather Events

    •   Iselin is located in a region prone to occasional hurricanes and tropical storms.
    •   The area also experiences thunderstorms, hail, and occasional flooding.
    •   Winters can be cold and snowy, with temperatures occasionally dropping below freezing.

Overall Climate

Iselin has a humid subtropical climate, characterized by hot, humid summers and mild winters. Precipitation is distributed throughout the year, with slightly more rain in the summer months. The area experiences moderate sunshine and wind speeds, with occasional extreme weather events.

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

    •   Iselin is home to the Middlesex County Park, a 584-acre preserve featuring diverse habitats, including forests, wetlands, and meadows.

    •   The park is a haven for wildlife, with species such as deer, foxes, owls, and songbirds.

Science

    •   Iselin was once the site of the Merck Research Laboratories, a renowned pharmaceutical company.

    •   The laboratories played a crucial role in the development of important drugs, including antibiotics and cancer treatments.

Personalities

  • Thomas Edison:

    The inventor and entrepreneur had a laboratory in Iselin where he conducted experiments on electric lighting.

  • Albert Einstein:

    The physicist visited Iselin in 1935 to attend a conference at the Merck Research Laboratories.

  • Jonas Salk:

    The developer of the polio vaccine lived in Iselin for a time and worked at the Merck Research Laboratories.

    • Tourist Attractions
    1.The Mall at Menlo Park

    is a large shopping mall located in Edison, New Jersey, just a few miles from Iselin. The mall has over 170 stores and restaurants, including Macy's, Nordstrom, and Saks Fifth Avenue.

    2.The Middlesex County Fair

    is an annual event that takes place in East Brunswick, New Jersey, just a few miles from Iselin. The fair features rides, games, food, and live entertainment.

    3.The Liberty Science Center

    is a science museum located in Jersey City, New Jersey, just a short drive from Iselin. The museum has over 300 exhibits on science and technology, including a planetarium, an IMAX theater, and a children's museum.

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