Weather WorldMountainside, NJ 7-Day Weather Forecast
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Mountainside Weather Forecast
Mountainside, NJ Weather Forecast Date: 229 PM EDT Sat Sep 19 2026
Weather forecast for Mountainside, NJ
Today Hi: 71°FHi: 22°C Lo: 60°F Lo: 16°C |
This Afternoon... Partly sunny. Highs in the lower 70s. Southeast winds around 5 mph. |
Sun Hi: 71°FHi: 22°C Lo: 59°F Lo: 15°C |
Sunday... Showers. Highs in the lower 70s. Southeast winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 90%. |
Mon Hi: 69°FHi: 21°C Lo: 55°F Lo: 13°C |
Monday... Partly sunny with a slight chance of showers in the morning, then mostly cloudy with a chance of showers in the afternoon. Highs in the upper 60s. Northeast winds 5 to 10 mph with gusts up to 25 mph. Chance of rain 30%. |
| Tue Hi: 65°FHi: 18°C Lo: 51°F Lo: 11°C |
Tuesday... Mostly cloudy with a 30% chance of showers. Highs in the mid 60s. |
| Wed Hi: 65°FHi: 18°C Lo: 51°F Lo: 11°C |
Wednesday... Mostly cloudy. Highs in the mid 60s. |
| Thu Hi: 61°FHi: 16°C Lo: 51°F Lo: 11°C |
Thursday... Mostly cloudy. A chance of showers in the afternoon. Highs in the lower 60s. Chance of rain 30%. |
| Fri Hi: 65°FHi: 18°C Lo: 51°F Lo: 11°C |
Friday... Mostly cloudy with a 40% chance of showers. Highs in the mid 60s. |
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