Weather forecast for 10 daysMountainside, NJ
Weather forecast for the weekend
Sunday Oct 18, 2026
- 59°F
- 39°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 5mphNNE 32°
- Humidity: 46%
- UV index: 4
- Sunrise: 7:12 am EDT
- Sunset: 6:13 pm EDT
- details ▼
Tomorrow, on Sunday, October 18, sunny conditions are also expected to continue.
Anticipated temperatures will peak at a moderate 59°F and dip to a minimum of a wintry 39.2°F.
Forecasted temperatures are trending slightly cooler than October's climate norm of 63.1°F.
Sunrise will be at 7:12 am and sunset at 6:13 pm; tomorrow's daylight will last for 11h and 1min.
Anticipated temperatures will peak at a moderate 59°F and dip to a minimum of a wintry 39.2°F.
Forecasted temperatures are trending slightly cooler than October's climate norm of 63.1°F.
Sunrise will be at 7:12 am and sunset at 6:13 pm; tomorrow's daylight will last for 11h and 1min.
10-day overview
Daily temperatures
Warmest day: Tuesday 68°C.
Coldest day: tomorrow 59°C.
Coldest day: tomorrow 59°C.
Chance of precipitation
Highest chance: Monday 26.10. 24%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- min.
- 34°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 12mphN 352°
- Humidity: 53%
- UV index: 0
- Sunrise: 7:10 am EDT
- Sunset: 6:14 pm EDT
- details ▼
- Sunday
- Oct 18, 2026
- 59°F
- 39°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 5mphNNE 32°
- Humidity: 46%
- UV index: 4
- Sunrise: 7:12 am EDT
- Sunset: 6:13 pm EDT
- details ▼
- Monday
- Oct 19, 2026
- 66°F
- 48°F
Mostly Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 9mphNNE 29°
- Humidity: 51%
- UV index: 4
- Sunrise: 7:13 am EDT
- Sunset: 6:11 pm EDT
- details ▼
- Tuesday
- Oct 20, 2026
- 68°F
- 45°F
Partly Cloudy
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 12mphNNE 21°
- Humidity: 47%
- UV index: 4
- Sunrise: 7:14 am EDT
- Sunset: 6:10 pm EDT
- details ▼
- Wednesday
- Oct 21, 2026
- 63°F
- 45°F
Mostly Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 12mphNNE 30°
- Humidity: 53%
- UV index: 4
- Sunrise: 7:15 am EDT
- Sunset: 6:08 pm EDT
- details ▼
- Thursday
- Oct 22, 2026
- 66°F
- 46°F
Partly Cloudy
- Precip. probability: 11%
- Precipitation: 0"
- Wind: 11mphN 9°
- Humidity: 49%
- UV index: 4
- Sunrise: 7:16 am EDT
- Sunset: 6:07 pm EDT
- details ▼
- Friday
- Oct 23, 2026
- 63°F
- 39°F
Sunny
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 9mphNNE 21°
- Humidity: 47%
- UV index: 4
- Sunrise: 7:17 am EDT
- Sunset: 6:05 pm EDT
- details ▼
- Saturday
- Oct 24, 2026
- 63°F
- 39°F
Mostly Sunny
- Precip. probability: 12%
- Precipitation: 0"
- Wind: 8mphNNE 30°
- Humidity: 48%
- UV index: 4
- Sunrise: 7:18 am EDT
- Sunset: 6:04 pm EDT
- details ▼
- Sunday
- Oct 25, 2026
- 61°F
- 45°F
Mostly Sunny
- Precip. probability: 23%
- Precipitation: 0"
- Wind: 8mphNNE 21°
- Humidity: 59%
- UV index: 4
- Sunrise: 7:19 am EDT
- Sunset: 6:03 pm EDT
- details ▼
- Monday
- Oct 26, 2026
- 66°F
- 46°F
Mostly Sunny
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 8mphN 357°
- Humidity: 64%
- UV index: 4
- Sunrise: 7:21 am EDT
- Sunset: 6:01 pm EDT
- details ▼
Weather patterns suggest that primarily bright and occasionally dull weather is anticipated.
Rainfall is not forecasted in Mountainside in the upcoming period.
In the upcoming days, the highest temperature will range between 59°F and 68°F, while the difference in minimum temperatures will be substantial, as nighttime lows are forecast to fall between 33.8°F and 48.2°F.
With the highest temperature of 68°F, Tuesday will be the warmest day; with the highest temperature of 59°F, Sunday will be the coldest day.
Rainfall is not forecasted in Mountainside in the upcoming period.
In the upcoming days, the highest temperature will range between 59°F and 68°F, while the difference in minimum temperatures will be substantial, as nighttime lows are forecast to fall between 33.8°F and 48.2°F.
With the highest temperature of 68°F, Tuesday will be the warmest day; with the highest temperature of 59°F, Sunday will be the coldest day.
Updated: Oct 17, 2026 @ 20:35:42 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
On Sunday, the forecast calls for abundant sunshine.
Tomorrow, the maximum temperature will be 59°F, while the minimum temperature will be 39.2°F.
The highest temperature will be slightly cooler than the average maximum of 63.1°F in October. The lowest temperature will be uncommonly lower than the average low of 49.1°F.
The highest temperature will be slightly cooler than the average maximum of 63.1°F in October. The lowest temperature will be uncommonly lower than the average low of 49.1°F.
On Sunday, in Mountainside, sunrise will be at 7:12 am and sunset at 6:13 pm (EDT).
In Mountainside, the length of the day tomorrow will be 11h and 1min.
