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.

Fog/Mist

36°F

2°C

Humidity 93%
Wind Speed SW 8 mph
Barometer 30.15 in
Dewpoint 34°F (1°C)
Visibility 5.00 mi
Wind Chill30°F (-1°C)
Last update 17 Feb 6:45 am EST
Extended Forecast for

Mountainside NJ

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a high near 46. Southwest wind around 6 mph.

    High: 46 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Increasing clouds, with a low around 33. Light west wind.

    Low: 33 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Rain. High near 45. Light east wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 45 °F

    Rain

  • Wednesday Night

    Wednesday Night: A 40 percent chance of rain before 1am. Mostly cloudy, with a low around 35. North wind around 6 mph.

    Low: 35 °F

    Chance Rain

  • Thursday

    Thursday: A 20 percent chance of rain after 1pm. Mostly cloudy, with a high near 42. North wind around 6 mph becoming east in the afternoon.

    High: 42 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: A chance of rain before 10pm, then a chance of rain and snow. Mostly cloudy, with a low around 33. Chance of precipitation is 40%.

    Low: 33 °F

    Chance
    Rain/Snow

  • Friday

    Friday: Rain. High near 41. Chance of precipitation is 80%.

    High: 41 °F

    Rain

  • Friday Night

    Friday Night: A chance of rain before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 33. Chance of precipitation is 40%.

    Low: 33 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Saturday

    Saturday: A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 42.

    High: 42 °F

    Chance Rain

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a high near 46. Southwest wind around 6 mph.
Tonight
Increasing clouds, with a low around 33. Light west wind.
Wednesday
Rain. High near 45. Light east wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
A 40 percent chance of rain before 1am. Mostly cloudy, with a low around 35. North wind around 6 mph.
Thursday
A 20 percent chance of rain after 1pm. Mostly cloudy, with a high near 42. North wind around 6 mph becoming east in the afternoon.
Thursday Night
A chance of rain before 10pm, then a chance of rain and snow. Mostly cloudy, with a low around 33. Chance of precipitation is 40%.
Friday
Rain. High near 41. Chance of precipitation is 80%.
Friday Night
A chance of rain before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 33. Chance of precipitation is 40%.
Saturday
A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 42.
Saturday Night
A chance of rain and snow after 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.
Sunday
A 50 percent chance of snow. Partly sunny, with a high near 37.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 26.
Monday
Partly sunny, with a high near 36.
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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:
4:22 am EST Feb 17, 2026
Forecast Valid:
7am EST Feb 17, 2026-6pm EST Feb 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation