National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

Somerville, Somerset Airport (KSMQ)

Lat: 40.62°NLon: 74.67°WElev: 105ft.

Overcast

68°F

20°C

Humidity 70%
Wind Speed NE 9 mph
Barometer 30.04 in (1017.0 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 18 Aug 6:53 am EDT
Extended Forecast for

Brass Castle NJ

  • Today

    Today: Mostly cloudy, with a high near 75. Northeast wind 5 to 10 mph, with gusts as high as 25 mph.

    High: 75 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 59. Northeast wind around 5 mph.

    Low: 59 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 75. East wind 5 to 10 mph.

    High: 75 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 59. Southeast wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers after 2pm. Partly sunny, with a high near 76. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 76 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers. Partly cloudy, with a low around 61. Chance of precipitation is 20%.

    Low: 61 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 75. Northeast wind 5 to 10 mph, with gusts as high as 25 mph.
Tonight
Partly cloudy, with a low around 59. Northeast wind around 5 mph.
Tuesday
Mostly sunny, with a high near 75. East wind 5 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 59. Southeast wind around 5 mph becoming calm in the evening.
Wednesday
A slight chance of showers after 2pm. Partly sunny, with a high near 76. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 61. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
Partly cloudy, with a low around 60.
Friday
Mostly sunny, with a high near 81.
Friday Night
Partly cloudy, with a low around 60.
Saturday
Mostly sunny, with a high near 81.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 80. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Brass Castle NJ
 40.74°N 75°W (Elev. 699 ft)
Last Update:
4:11 am EDT Aug 18, 2025
Forecast Valid:
7am EDT Aug 18, 2025-6pm EDT Aug 24, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation