Rock Mill, NJ
Unincorporated community in Somerset County, New Jersey
Rock Mill is a small unincorporated community in Somerset County, New Jersey. It is 1.9 miles E of Skillman, the nearest town. Its ZIP code is 08558.
Rock Mill at a glance
- State
- New Jersey
- County
- Somerset County
- ZIP code
- 08558
- Nearest town
- Skillman (1.9 mi)
- Time zone
- America/New York
- Coordinates
- 40.4375, -74.7433
Weather in Rock Mill now
Loading the National Weather Service forecast…
Rock Mill weather by the hour
Rock Mill weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Rock Mill.
This week in Rock Mill
Sunrise, sunset and moon in Rock Mill
What is the weather usually like in Rock Mill?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 85°F average high
- Januarycoldest month · 22°F average low
- 51.0 inprecipitation per year · 1,295 mm
- 23.9 insnowfall per year · 61 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Rock Mill: May–June and August–September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station WERTSVILLE 4 NE, NJ US (USC00289363), adjusted for the elevation of Rock Mill.
Rock Mill weather month by month
Sunrise and sunset in Rock Mill through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:18 AM | 4:58 PM | 9 h 40 min |
| February | 6:50 AM | 5:35 PM | 10 h 44 min |
| March | 7:08 AM | 7:07 PM | 11 h 58 min |
| April | 6:18 AM | 7:39 PM | 13 h 20 min |
| May | 5:40 AM | 8:09 PM | 14 h 29 min |
| June | 5:26 AM | 8:32 PM | 15 h 6 min |
| July | 5:40 AM | 8:29 PM | 14 h 49 min |
| August | 6:08 AM | 7:58 PM | 13 h 49 min |
| September | 6:38 AM | 7:09 PM | 12 h 30 min |
| October | 7:08 AM | 6:20 PM | 11 h 11 min |
| November | 6:43 AM | 4:43 PM | 9 h 59 min |
| December | 7:13 AM | 4:34 PM | 9 h 21 min |
Times for the 15th of each month, local time (America/New York).
What is the weather like in Rock Mill?
Rock Mill has a hot-summer humid continental climate. The warmest month is July, with an average high of 85°F (30°C), and the coldest is January, with average lows of 22°F (-6°C).
It gets about 51.0 inches (1,295 mm) of precipitation a year. The wettest month is July and the driest is February. Snow is common: about 24 inches fall in an average year.
The best time to visit Rock Mill is May–June and August–September. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
Webcams near Rock Mill
The closest live webcam is Montgomery Township › West: Country Cabinet Shop Inc, 1.9 miles SE of Rock Mill.
Webcams: Windy.com. Distances in a straight line from Rock Mill.
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Map of Rock Mill, NJ
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Rock Mill Street View
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Questions about Rock Mill
Where is Rock Mill, NJ?
Rock Mill is an unincorporated community in Somerset County, New Jersey, 1.9 miles E of Skillman.
What county is Rock Mill in?
Rock Mill is in Somerset County, New Jersey.
What is the ZIP code of Rock Mill, NJ?
The ZIP code for Rock Mill is 08558.
What is the nearest town to Rock Mill?
Skillman, 1.9 miles away.
Are there webcams near Rock Mill?
Yes. The closest is Montgomery Township › West: Country Cabinet Shop Inc, 1.9 miles away.
What is the hottest month in Rock Mill?
July, with an average high of 85°F (30°C).
What is the coldest month in Rock Mill?
January, with an average low of 22°F (-6°C).
How much does it rain in Rock Mill?
About 51.0 inches (1,295 mm) a year; the wettest month is July.
Does it snow in Rock Mill?
Yes, about 24 inches of snow fall in an average year.
When is the best time to visit Rock Mill?
May–June and August–September, when temperatures are most pleasant and rainy days are fewer.
What climate does Rock Mill have?
Hot-summer humid continental (Köppen Dfa).
Last updated: