Mendham, NJ Weather
Mendham, NJ climate is warm during summer when temperatures tend to be in the 70's and very cold during winter when temperatures tend to be in the 20's.
The warmest month of the year is July with an average maximum temperature of 84.70 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 17.60 degrees Fahrenheit.
Temperature variations between night and day tend to be moderate during summer with a difference that can reach 25 degrees Fahrenheit, and moderate during winter with an average difference of 21 degrees Fahrenheit.
The annual average precipitation at Mendham is 53.67 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is September with an average rainfall of 5.33 Inches.
Weather Data
Current Conditions
|
Mostly Cloudy, 57°F | Humidity: 67% | Dewpoint: 46°F |
| Wind Speed: NE 6.9 MPH (6 KT) | Heat Index: 57°F | ||
| Barometer: 30.14 in. | Wind Chill: 56°F |
Weather Forecast
 | Tonight: Mostly cloudy. A slight chance of drizzle after midnight. Patchy fog after midnight. Lows in the lower 40s. Northeast winds around 5 mph. | |
| Lo: 41°F | ||
 | Hi: 55°F | Wednesday: Mostly cloudy. A chance of showers in the afternoon. Highs in the mid 50s. East winds around 5 mph. Chance of rain 40 percent. |
| Lo: 39°F | ||
| Hi: 59°F | Thanksgiving day: Mostly cloudy. Highs in the upper 50s. South winds around 5 mph. |
| Lo: 40°F | ||
 | Hi: 45°F | Friday: Showers likely. Breezy with highs in the mid 40s. Chance of rain 70 percent. |
| Lo: 35°F | ||
 | Hi: 45°F | Saturday: Partly sunny. A chance of rain and snow in the morning. Highs in the mid 40s. Chance of precipitation 30 percent. |
| Lo: 31°F | ||
 | Hi: 50°F | Sunday: Mostly sunny. Highs around 50. |
| Lo: 35°F | ||
| Hi: 51°F | Monday: Partly sunny. Highs in the lower 50s. |
| Lo: 39°F |
Moon, Sunrise and Sunset
 |
Moon Phase: Waxing Gibbous Moon | Civil Twilight: 6:25 AM EST |
Sunrise: 6:54 AM EST |
| Sunset: 4:34 PM EST |
Civil Twilight: 5:04 PM EST |
Normal Climate
Normal Temperatures
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max °F | 37.9 | 40.9 | 50.0 | 60.8 | 71.4 | 79.8 | 84.7 | 82.6 | 75.3 | 64.5 | 53.6 | 42.6 | 62.0 |
| Mean °F | 27.8 | 30.1 | 38.7 | 48.6 | 58.5 | 67.1 | 72.0 | 70.3 | 63.0 | 51.5 | 42.6 | 32.6 | 50.2 |
| Min °F | 17.6 | 19.3 | 27.3 | 36.3 | 45.6 | 54.3 | 59.2 | 57.9 | 50.7 | 38.5 | 31.5 | 22.6 | 38.4 |
Normal Precipitation
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | 4.50 | 3.00 | 4.41 | 4.64 | 5.09 | 4.40 | 5.29 | 4.37 | 5.33 | 4.17 | 4.37 | 4.10 | 53.67 |
