Our Proprietary 10-Day Forecast

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Current warnings over Randolph, 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 Randolph, 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 Randolph, 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 Morris 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 Randolph, 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 Randolph, 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 Randolph, 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 Randolph, 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 Randolph, 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 Morris 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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  • American GFS
  • Canadian GDPS GEM
  • German DWD ICON
  • British MetOffice's UKMET Unified Model
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  • 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.
 
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Climate Summary
(made with AI, use with caution)
Randolph, NJ Climate Summary

Location

Morris County, New Jersey, USA

Climate Type

Humid Continental

Average Annual Temperature

50.4°F (10.2°C)

Average Annual Precipitation

45.2 inches (114.8 cm)

Average Annual Snowfall

26.4 inches (67.1 cm)

Seasons

    •   Spring

Mild and rainy, with average temperatures ranging from 40°F to 60°F (4°C to 16°C).

    •   Summer

Warm and humid, with average temperatures ranging from 60°F to 80°F (16°C to 27°C).

    •   Fall

Cool and crisp, with average temperatures ranging from 50°F to 70°F (10°C to 21°C).

    •   Winter

Cold and snowy, with average temperatures ranging from 20°F to 40°F (-7°C to 4°C).

Temperature Extremes

    •   Record High: 104°F (40°C)
    •   Record Low: -17°F (-27°C)

Precipitation

    •   Most precipitation occurs in July and August, with an average of 4.5 inches (11.4 cm) per month.
    •   Least precipitation occurs in February and March, with an average of 2.5 inches (6.4 cm) per month.
    •   Snowfall is common from December to March, with the heaviest snowfall typically occurring in January.

Humidity

    •   Randolph experiences moderate humidity throughout the year, with an average relative humidity of 68%.
    •   Humidity is highest in the summer months, with an average of 75%.

Wind

    •   Prevailing winds are from the west and northwest.
    •   Average wind speeds range from 6 to 10 mph (9.7 to 16.1 km/h).

Other Climate Features

    •   Randolph is located in USDA Plant Hardiness Zone 6a, which means that plants that can tolerate temperatures down to -10°F (-23°C) can be grown outdoors.
    •   The growing season in Randolph typically lasts from mid-April to mid-October.
    •   Randolph is not prone to extreme weather events such as hurricanes or tornadoes.

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

    •   Randolph is home to the 1,100-acre Lewis Morris County Park, featuring forests, lakes, and hiking trails.

    •   The park is a renowned birding spot, with over 200 species observed.

    •   The nearby Black River Wildlife Management Area provides habitat for numerous wildlife species, including deer, turkey, and black bears.

Science

    •   Randolph was the site of the first successful commercial production of penicillin in the United States in 1943.

    •   Merck & Co., a major pharmaceutical company, has a significant presence in Randolph, employing thousands of scientists and researchers.

Personalities

    •   Thomas Edison, the inventor of the light bulb, lived in Randolph for a brief period in 1887.

    •   William Randolph Hearst, the newspaper magnate, owned a summer estate in Randolph, known as \

Tourist Attractions
1.Fosterfields Living Historical Farm

is a 200-acre farm that offers a glimpse into the past. Visitors can tour the historic farmhouse, barn, and other buildings, and learn about the daily lives of the people who lived and worked here in the 18th and 19th centuries. There are also farm animals, gardens, and hiking trails to explore.

2.The Frelinghuysen Arboretum

is a 127-acre arboretum that features a wide variety of trees, shrubs, and flowers. Visitors can stroll through the gardens, visit the greenhouse, or take a guided tour. There are also educational programs and events offered throughout the year.

3.The Morris Museum

is a museum that features a collection of art, history, and science exhibits. Visitors can learn about the history of Morris County, see works by famous artists, and explore interactive science exhibits. There are also special exhibitions and events offered throughout the year.

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