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

Severe Storm and Dangerous Heat Risks through Friday

Severe thunderstorms are possible each afternoon and evening through Friday. Additionally, dangerous heat and humidity is expected for portions of the area Thursday through Friday. View this briefing for details. Read More >

Hazardous Weather Conditions

Current conditions at

Somerville, Somerset Airport (KSMQ)

Lat: 40.62°NLon: 74.67°WElev: 105ft.

Fair

73°F

23°C

Humidity 84%
Wind Speed Calm
Barometer 29.72 in (1006.3 mb)
Dewpoint 68°F (20°C)
Visibility 9.00 mi
Last update 12 Jun 2:53 am EDT
Extended Forecast for

Lebanon NJ

Heat Advisory June 12, 03:51am until June 12, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory June 12, 03:51am until June 12, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Overnight

    Low: 70 °F

    Patchy Fog

  • Friday

    Friday: A chance of showers and thunderstorms, mainly after 2pm. Some of the storms could be severe. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 94. Heat index values as high as 101. West wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 94 °F

    Patchy Fog
    then Severe
    Thunderstorms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, mainly before 8pm. Some of the storms could be severe. Partly cloudy, with a low around 63. Northwest wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Severe
    Thunderstorms
    then Partly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 89. West wind around 5 mph.

    High: 89 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 62. Calm wind.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Mostly Sunny
    then Showers
    Likely

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 11pm, then showers between 11pm and 2am. Low around 61. Chance of precipitation is 80%.

    Low: 61 °F

    Showers

  • Monday

    Monday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 70. West wind around 5 mph.
Friday
A chance of showers and thunderstorms, mainly after 2pm. Some of the storms could be severe. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 94. Heat index values as high as 101. West wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms, mainly before 8pm. Some of the storms could be severe. Partly cloudy, with a low around 63. Northwest wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Sunny, with a high near 89. West wind around 5 mph.
Saturday Night
Mostly clear, with a low around 62. Calm wind.
Sunday
Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers and possibly a thunderstorm before 11pm, then showers between 11pm and 2am. Low around 61. Chance of precipitation is 80%.
Monday
Mostly sunny, with a high near 78.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
Mostly sunny, with a high near 79.
Tuesday Night
Partly cloudy, with a low around 57.
Wednesday
A chance of showers. Mostly sunny, with a high near 83. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 59. Chance of precipitation is 30%.
Thursday
A chance of showers. Mostly sunny, with a high near 86. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lebanon NJ
 40.63°N 74.85°W (Elev. 312 ft)
Last Update:
1:02 am EDT Jun 12, 2026
Forecast Valid:
3am EDT Jun 12, 2026-6pm EDT Jun 18, 2026
 
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