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.

Rain

41°F

5°C

Humidity 100%
Wind Speed Calm
Barometer 30.22 in
Dewpoint 41°F (5°C)
Visibility 5.00 mi
Last update 5 Mar 2:15 am EST
Extended Forecast for

Mountainside NJ

  • Overnight

    Overnight: A 30 percent chance of rain, mainly after 5am. Patchy fog. Otherwise, cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Chance Rain
    and Patchy
    Fog

  • Thursday

    Thursday: Rain. Patchy fog. High near 42. Calm wind becoming northeast 5 to 7 mph in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 42 °F

    Rain and
    Patchy Fog

  • Thursday Night

    Thursday Night: Rain, mainly before 4am. Patchy fog. Low around 37. Northeast wind 6 to 9 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 37 °F

    Rain and
    Patchy Fog

  • Friday

    Friday: Patchy fog before 10am. Otherwise, cloudy, with a high near 44. Northeast wind around 8 mph, with gusts as high as 20 mph.

    High: 44 °F

    Patchy Fog
    then Cloudy

  • Friday Night

    Friday Night: A 30 percent chance of rain, mainly after 1am. Cloudy, with a low around 38. East wind around 5 mph becoming calm in the evening.

    Low: 38 °F

    Chance Rain

  • Saturday

    Saturday: Cloudy, with a high near 55.

    High: 55 °F

    Cloudy

  • Saturday Night

    Saturday Night: Showers likely. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.

    Low: 49 °F

    Showers
    Likely

  • Sunday

    Sunday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of rain, mainly after 5am. Patchy fog. Otherwise, cloudy, with a low around 38. Calm wind.
Thursday
Rain. Patchy fog. High near 42. Calm wind becoming northeast 5 to 7 mph in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain, mainly before 4am. Patchy fog. Low around 37. Northeast wind 6 to 9 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Friday
Patchy fog before 10am. Otherwise, cloudy, with a high near 44. Northeast wind around 8 mph, with gusts as high as 20 mph.
Friday Night
A 30 percent chance of rain, mainly after 1am. Cloudy, with a low around 38. East wind around 5 mph becoming calm in the evening.
Saturday
Cloudy, with a high near 55.
Saturday Night
Showers likely. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.
Sunday
Partly sunny, with a high near 62.
Sunday Night
Partly cloudy, with a low around 43.
Monday
Sunny, with a high near 62.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Mostly sunny, with a high near 71.
Tuesday Night
Partly cloudy, with a low around 52.
Wednesday
A 30 percent chance of rain. Partly sunny, with a high near 71.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mountainside NJ
 40.66°N 74.35°W (Elev. 141 ft)
Last Update:
12:54 am EST Mar 5, 2026
Forecast Valid:
2am EST Mar 5, 2026-6pm EDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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