Mountainside, NJ Weather Forecast
Local 7-day forecast
Partly Sunny then Slight Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Mountainside, NJ in one place.
A slight chance of rain showers after 2pm. Partly sunny, with a high near 69.
Local Weather Overview
This forecast page for Mountainside, NJ is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 16, 2026 8:38 AM EDT.
The active forecast window currently covers Apr 22, 2026 for Mountainside, NJ.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 22, 2026
- Latest sync
- Apr 16, 2026 8:38 AM EDT
- Forecast office
- OKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Mountainside
Wednesday looks like the warmest upcoming period in Mountainside at 69 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 45 degrees F.
The strongest winds are forecast for Wednesday at about 6 to 10 mph SW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 16, 2026 8:38 AM EDT
- Coverage
- 1 day
- Time zone
- America/New_York
- Forecast office
- OKX
- Radar station
- KDIX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of rain showers before 8pm. Partly cloudy, with a low around 45.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Apr 22
|
Partly Sunny then Slight Chance Rain Showers
|
69°F |
6 to 10 mph
SW
|
|
Wednesday Night
Apr 22
|
Slight Chance Rain Showers then Partly Cloudy
|
45°F |
5 to 9 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Mountainside.
