Upper Montclair Weather Forecast
- 62
- 82
Becoming Sunny
- 57
- 83
Mostly Sunny
- 55
- 73
Mostly Sunny
- 57
- 73
Partly Sunny
- 61
- 77
Partly Sunny
- 64
- 83
Mostly Cloudy
Today 18 Sep Western Essex
Partly sunny this Morning, then clearing. Patchy fog this morning. Highs in the lower 80s. Northwest Winds around 5 Mph.
Tonight 18 Sep Western Essex
Mostly clear. Lows in the lower 60s. Northwest Winds around 5 Mph.
Upper Montclair Temperature Statistics
September Temperature
Caldwell, Essex County Airport (4.3 miles)
Lowest 8 September, 2025
50 °FAverage September
67.7 °FHighest 5 September, 2025
84.9 °F
Climate (2020–Present)
Caldwell, Essex County Airport (4.3 miles)
Average Low 2020–2025
47.1 °FAverage 2020–2025
56.3 °FAverage High 2020–2025
65.6 °F