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

41°F

5°C

Humidity 93%
Wind Speed Calm
Barometer 30.23 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 5 Mar 1:15 am EST
Extended Forecast for

Mountainside NJ

  • Overnight

    Overnight: A 30 percent chance of rain, mainly after 5am. Patchy fog. Otherwise, cloudy, with a steady temperature around 40. Calm wind.

    Low: 40 °F

    Chance Rain
    and Patchy
    Fog

  • Thursday

    Thursday: Rain. Patchy fog. High near 41. Calm wind becoming east 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: 41 °F

    Rain and
    Patchy Fog

  • Thursday Night

    Thursday Night: Rain, mainly before 4am. Patchy fog. Low around 36. Northeast wind 7 to 9 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 36 °F

    Rain and
    Patchy Fog

  • Friday

    Friday: Patchy fog before 10am. Otherwise, cloudy, with a high near 43. Northeast wind around 8 mph, with gusts as high as 20 mph.

    High: 43 °F

    Patchy Fog
    then Cloudy

  • Friday Night

    Friday Night: A 30 percent chance of rain, mainly after 1am. Cloudy, with a low around 37. East wind around 6 mph becoming calm in the evening.

    Low: 37 °F

    Chance Rain

  • Saturday

    Saturday: Cloudy, with a high near 54.

    High: 54 °F

    Cloudy

  • Saturday Night

    Saturday Night: Showers likely. Mostly cloudy, with a low around 48. Chance of precipitation is 70%.

    Low: 48 °F

    Showers
    Likely

  • Sunday

    Sunday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 30 percent chance of rain, mainly after 5am. Patchy fog. Otherwise, cloudy, with a steady temperature around 40. Calm wind.
Thursday
Rain. Patchy fog. High near 41. Calm wind becoming east 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 36. Northeast wind 7 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 43. 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 37. East wind around 6 mph becoming calm in the evening.
Saturday
Cloudy, with a high near 54.
Saturday Night
Showers likely. Mostly cloudy, with a low around 48. Chance of precipitation is 70%.
Sunday
Partly sunny, with a high near 61.
Sunday Night
Partly cloudy, with a low around 42.
Monday
Sunny, with a high near 61.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Sunny, with a high near 70.
Tuesday Night
Partly cloudy, with a low around 52.
Wednesday
A 30 percent chance of rain. Partly sunny, with a high near 70.
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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:
12:54 am EST Mar 5, 2026
Forecast Valid:
1am 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