National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Morristown Airport (KMMU)

Lat: 40.8°NLon: 74.42°WElev: 187ft.

Overcast

36°F

2°C

Humidity 81%
Wind Speed NE 5 mph
Barometer 29.99 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 20 Feb 12:55 am EST
Extended Forecast for

Mountainside NJ

  • Overnight

    Overnight: A 20 percent chance of rain. Cloudy, with a low around 35. East wind around 8 mph.

    Low: 35 °F

    Slight Chance
    Rain

  • Friday

    Friday: Rain, mainly before 4pm. High near 40. East wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 40 °F

    Rain

  • Friday Night

    Friday Night: A 30 percent chance of rain, mainly before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 34. Northeast wind 5 to 7 mph becoming west after midnight.

    Low: 34 °F

    Chance Rain
    then Partly
    Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 46. Northwest wind 6 to 8 mph.

    High: 46 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain before 1am, then a chance of rain and snow between 1am and 4am, then a chance of snow after 4am. Mostly cloudy, with a low around 32. Light and variable wind becoming east around 6 mph after midnight. Chance of precipitation is 30%.

    Low: 32 °F

    Slight Chance
    Rain then
    Chance
    Rain/Snow

  • Sunday

    Sunday: Snow. Steady temperature around 34. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    High: 34 °F

    Snow

  • Sunday Night

    Sunday Night: Snow likely, mainly before 1am. Cloudy, with a low around 29. Chance of precipitation is 70%.

    Low: 29 °F

    Snow Likely

  • Monday

    Monday: A 30 percent chance of snow before 1pm. Cloudy, with a high near 37.

    High: 37 °F

    Chance Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of rain. Cloudy, with a low around 35. East wind around 8 mph.
Friday
Rain, mainly before 4pm. High near 40. East wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A 30 percent chance of rain, mainly before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 34. Northeast wind 5 to 7 mph becoming west after midnight.
Saturday
Partly sunny, with a high near 46. Northwest wind 6 to 8 mph.
Saturday Night
A slight chance of rain before 1am, then a chance of rain and snow between 1am and 4am, then a chance of snow after 4am. Mostly cloudy, with a low around 32. Light and variable wind becoming east around 6 mph after midnight. Chance of precipitation is 30%.
Sunday
Snow. Steady temperature around 34. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Sunday Night
Snow likely, mainly before 1am. Cloudy, with a low around 29. Chance of precipitation is 70%.
Monday
A 30 percent chance of snow before 1pm. Cloudy, with a high near 37.
Monday Night
Mostly cloudy, with a low around 24.
Tuesday
Mostly sunny, with a high near 36.
Tuesday Night
Partly cloudy, with a low around 21.
Wednesday
A 30 percent chance of rain. Mostly cloudy, with a high near 41.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 34.
Thursday
A 40 percent chance of rain. Mostly cloudy, with a high near 46.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.69°N 74.37°W (Elev. 417 ft)
Last Update:
1:01 am EST Feb 20, 2026
Forecast Valid:
1am EST Feb 20, 2026-6pm EST Feb 26, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation