Weather forecast for todayMountainside, NJ

Weather forecast for today

Current condition 12:28 pm EDT

  • 55°F
  • Feels like:
    55°F
Sunny
Sunny
  • Precipitation: 0"
  • Wind: 5mphENE 70°
  • Humidity: 36%
  • Dewpoint: 28°F
  • Pressure: 30.57"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
In Mountainside, at the moment, the horizon is crisp, and the weather remains sunny and inviting.
The temperature is a mild 55.4°F. The current temperature is almost at the maximum predicted 59°F for today.

Sunday Oct 18, 2026

  • 59°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphNE 47°
  • Humidity: 35%
  • UV index: 4
  • Sunrise: 7:12 am EDT
  • Sunset: 6:13 pm EDT
  • ▼
Today, on Sunday, October 18, sunshine and minimal clouds are in the outlook.
The temperature will fluctuate from a high of a mild 59°F to a low of an icy 39.2°F.
The day’s top temperature is expected to be a couple of degrees lower than the typical October high of 63.1°F.
Sunrise was at 7:12 am and sunset will be at 6:13 pm; the daylight will last for 11h and 1min.

Hourly overview

Hourly temperatures

Warmest period: 2 pm - 3 pm 59°C.
Coldest hour: 10 pm 45°C.

Chance of precipitation

Highest chance: 9 pm - 10 pm 2%.

Hourly weather forecast

  • 1 pm
  • 57°F
  • Feels like:
    57°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphNE 40°
  • Humidity: 34%
  • Pressure: 30.56"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 59°F
  • Feels like:
    59°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphNE 42°
  • Humidity: 31%
  • Pressure: 30.53"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 3 pm
  • 59°F
  • Feels like:
    59°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphNE 45°
  • Humidity: 32%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 4 pm
  • 57°F
  • Feels like:
    57°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphNE 40°
  • Humidity: 34%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 5 pm
  • 57°F
  • Feels like:
    57°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 3mphNE 52°
  • Humidity: 35%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 pm
  • 55°F
  • Feels like:
    55°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 2mphENE 69°
  • Humidity: 44%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:13 pm
  • 7 pm
  • 52°F
  • Feels like:
    52°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphE 95°
  • Humidity: 53%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 pm
  • 48°F
  • Feels like:
    48°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphESE 111°
  • Humidity: 62%
  • Pressure: 30.5"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
  • 9 pm
  • 46°F
  • Feels like:
    46°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 1mphESE 110°
  • Humidity: 67%
  • Pressure: 30.5"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
  • 10 pm
  • 45°F
  • Feels like:
    45°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 1mphE 95°
  • Humidity: 71%
  • Pressure: 30.5"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
  • 11 pm
  • 45°F
  • Feels like:
    45°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 0mphE 88°
  • Humidity: 74%
  • Pressure: 30.5"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
Today, in Mountainside, primarily bright and sunny weather is anticipated.
The temperature will vary between the lowest temperature of 44.6°F and the highest temperature of 59°F. The warmest part of the day will be at 2 pm and 3 pm.
The high will be moderately lower than the normal maximum of 63.1°F for October. The expected low will be more close to what’s common in November than the current October average of 49.1°F.
Updated: Oct 18, 2026 @ 16:28:39 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Currently (12:28 pm EDT) it is 55.4°F in Mountainside.

On Sunday, in Mountainside, expect consistent sunshine and open skies.

Today, the highest temperature will be 59°F, while the lowest temperature will be 39.2°F.
The highest temperature today will be a couple of degrees lower than the average maximum temperature in October. The lowest temperature will be uncommonly lower than the average low of 49.1°F.

On Sunday, in Mountainside, sunrise was at 7:12 am and sunset will be at 6:13 pm (EDT).

Today, the daylight will last for 11h and 1min.