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.

Fair

41°F

5°C

Humidity 87%
Wind Speed W 5 mph
Barometer 30.17 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 10 Jan 3:15 am EST
Extended Forecast for

Mountainside NJ

  • Overnight

    Overnight: Mostly cloudy, with a low around 40. Northwest wind around 6 mph.

    Low: 40 °F

    Mostly Cloudy

  • Saturday

    Saturday: Rain, mainly after 1pm. High near 44. Light and variable wind becoming east 5 to 7 mph in the morning. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 44 °F

    Chance Rain
    then Rain

  • Saturday Night

    Saturday Night: Rain, mainly before 10pm. Steady temperature around 41. Northeast wind 5 to 8 mph becoming calm. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 41 °F

    Rain then
    Chance Rain

  • Sunday

    Sunday: A 20 percent chance of rain before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 45. West wind 7 to 15 mph.

    High: 45 °F

    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 29. West wind 13 to 15 mph, with gusts as high as 26 mph.

    Low: 29 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 40. Northwest wind around 6 mph.
Saturday
Rain, mainly after 1pm. High near 44. Light and variable wind becoming east 5 to 7 mph in the morning. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
Rain, mainly before 10pm. Steady temperature around 41. Northeast wind 5 to 8 mph becoming calm. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
A 20 percent chance of rain before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 45. West wind 7 to 15 mph.
Sunday Night
Partly cloudy, with a low around 29. West wind 13 to 15 mph, with gusts as high as 26 mph.
Monday
Mostly sunny, with a high near 41.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Mostly sunny, with a high near 45.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Mostly cloudy, with a high near 49.
Wednesday Night
Mostly cloudy, with a low around 31.
Thursday
A 30 percent chance of rain. Partly sunny, with a high near 38.
Thursday Night
Partly cloudy, with a low around 21.
Friday
Mostly sunny, with a high near 33.
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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:
2:50 am EST Jan 10, 2026
Forecast Valid:
3am EST Jan 10, 2026-6pm EST Jan 16, 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