Our Proprietary 10-Day Forecast

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Current warnings over Mendham, 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 Mendham, 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 Mendham, 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 Mendham, 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 Mendham, 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 Mendham, 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 Mendham, 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 Mendham, 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
  • 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.
 
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Climate Summary
(made with AI, use with caution)
Mendham, New Jersey Climate Summary

General Climate

Humid subtropical climate (Köppen Cfa)

Temperature

    •   Average Annual Temperature

52.4°F (11.3°C)

    •   Average Summer Temperature (June-August)

72.6°F (22.6°C)

    •   Average Winter Temperature (December-February)

29.2°F (-1.6°C)

    •   Record High Temperature

103°F (39.4°C)

    •   Record Low Temperature

-14°F (-25.6°C)

Precipitation

    •   Average Annual Precipitation

47.2 inches (1200 mm)

    •   Average Snowfall

22.8 inches (58 cm)

    •   Wettest Month

July (4.8 inches)

    •   Driest Month

February (2.5 inches)

Sunshine and Humidity

    •   Average Annual Sunshine

2,600 hours

    •   Average Relative Humidity

68%

Wind

    •   Prevailing Wind Direction

West-southwest

    •   Average Wind Speed

9.3 mph (15 km/h)

Seasonal Climate

    •   Spring (March-May)

Mild temperatures with increasing precipitation and occasional thunderstorms.

    •   Summer (June-August)

Warm and humid with frequent thunderstorms.

    •   Fall (September-November)

Pleasant temperatures with decreasing precipitation and occasional frost.

    •   Winter (December-February)

Cold and snowy with occasional thaws.

Climate Trends

    •   Rising Temperatures

Over the past century, average temperatures in Mendham have increased by approximately 2°F (1.1°C).

    •   Increasing Precipitation

Annual precipitation has also increased slightly, with more frequent heavy rainfall events.

    •   Extreme Weather

Mendham is occasionally affected by extreme weather events such as hurricanes, tornadoes, and heat waves.

Note

Climate data is based on long-term averages and may vary from year to year.

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

    •   Mendham is home to the 1,200-acre Jockey Hollow National Historical Park, which preserves the site of General George Washington's winter encampment during the Revolutionary War.

    •   The park features diverse flora and fauna, including over 100 bird species, 50 mammal species, and 40 reptile and amphibian species.

    •   The Passaic River, which flows through Mendham, provides important habitat for aquatic life, including trout, bass, and shad.

Science

    •   Mendham was the birthplace of astronomer Henry Norris Russell, who developed the Hertzsprung-Russell diagram, a key tool in understanding stellar evolution.

    •   The town is home to the Far Hills Research Center, a leading institution in animal health and nutrition.

Personalities

    •   Mendham has been home to notable figures such as:

    •   Author and conservationist Aldo Leopold

    •   Painter and sculptor Alexander Calder

    •   Actor and comedian Will Ferrell

Tourist Attractions
1.Fosterfields Living Historical Farm

(Morristown, NJ): A 200-acre living history farm that offers a glimpse into the life of a colonial farm family in the 18th century. Visitors can explore the historic buildings, meet costumed interpreters, and participate in hands-on activities.

2.Albright Memorial Library

(Mendham, NJ): A beautiful and historic library that houses a collection of over 100,000 books, as well as a rare book collection and a children's library. The library also offers a variety of programs and events for all ages.

3.The Stickley Museum at Craftsman Farms

(Parsippany, NJ): A museum dedicated to the life and work of Gustav Stickley, a pioneer of the American Arts and Crafts movement. The museum features a collection of Stickley's furniture and other decorative arts, as well as his home and studio.

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