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Current conditions at
Morristown Airport (KMMU)
Lat: 40.8°NLon: 74.42°WElev: 187ft.
Fair
32°F
0°C
| Humidity | 64% |
| Wind Speed | Calm |
| Barometer | 30.36 in |
| Dewpoint | 21°F (-6°C) |
| Visibility | 10.00 mi |
| Last update | 15 Mar 12:55 am EDT |
Extended Forecast for
Mountainside NJ
Overnight

Low: 37 °F
Mostly Cloudy
Sunday

High: 50 °F
Partly Sunny
Sunday Night
Low: 44 °F⇑
Chance
Showers then
ShowersMonday

High: 66 °F
Heavy Rain
and BreezyMonday Night
Low: 32 °F
Breezy. Heavy
Rain then
Rain/SnowTuesday
High: 40 °F
Chance Snow
Showers then
Partly SunnyTuesday Night

Low: 24 °F
Partly Cloudy
Wednesday

High: 40 °F
Mostly Sunny
Wednesday Night

Low: 30 °F
Mostly Cloudy
Detailed Forecast
Overnight
Mostly cloudy, with a steady temperature around 37. Light north wind.
Sunday
Partly sunny, with a high near 50. Southeast wind 6 to 13 mph.
Sunday Night
A chance of showers before 2am, then showers and possibly a thunderstorm between 2am and 5am, then showers after 5am. Temperature falling to near 44 by 10pm, then rising to around 51 during the remainder of the night. East wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Monday
Showers, with thunderstorms also possible after 8am. Some of the storms could produce heavy rainfall. High near 66. Breezy, with a south wind 14 to 20 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
Rain showers before 5am, then a chance of rain and snow showers. The rain could be heavy at times. Some thunder is also possible. Low around 32. Breezy, with a south wind 18 to 21 mph becoming west after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Tuesday
A 30 percent chance of snow showers before 8am. Increasing clouds, with a high near 40.
Tuesday Night
Partly cloudy, with a low around 24.
Wednesday
Mostly sunny, with a high near 40.
Wednesday Night
Mostly cloudy, with a low around 30.
Thursday
Partly sunny, with a high near 48.
Thursday Night
Mostly cloudy, with a low around 35.
Friday
Mostly sunny, with a high near 53.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 37.
Saturday
A 30 percent chance of rain. Partly sunny, with a high near 53.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Mountainside NJ
40.66°N 74.35°W (Elev. 141 ft)
40.66°N 74.35°W (Elev. 141 ft)
7:50 pm EDT Mar 14, 2026
1am EDT Mar 15, 2026-6pm EDT Mar 21, 2026


