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

Somerville, Somerset Airport (KSMQ)

Lat: 40.62°NLon: 74.67°WElev: 105ft.

Overcast

41°F

5°C

Humidity 62%
Wind Speed SE 8 mph
Barometer 30.35 in (1027.9 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 15 Mar 3:53 pm EDT
Extended Forecast for

Long Valley NJ

  • Tonight

    Tonight: Rain, with thunderstorms also possible after 5am. Low around 39. East wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 39 °F

    Slight Chance
    Rain then
    Rain

  • Monday

    Monday: Showers and thunderstorms, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. Some of the storms could be severe. High near 64. South wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 64 °F

    Showers
    Likely then
    Severe
    Thunderstorms

  • Monday Night

    Monday Night: Rain showers before 2am, then a chance of rain showers and sleet. Some thunder is also possible. Low around 28. Breezy, with a south wind 15 to 20 mph becoming west after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 100%. Little or no sleet accumulation expected.

    Low: 28 °F

    Breezy.
    Severe
    Thunderstorms
    then
    Rain/Sleet

  • Tuesday

    Tuesday: Mostly sunny, with a high near 38. West wind around 15 mph, with gusts as high as 30 mph.

    High: 38 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 20. West wind 5 to 15 mph.

    Low: 20 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Rain, with thunderstorms also possible after 5am. Low around 39. East wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Monday
Showers and thunderstorms, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. Some of the storms could be severe. High near 64. South wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
Rain showers before 2am, then a chance of rain showers and sleet. Some thunder is also possible. Low around 28. Breezy, with a south wind 15 to 20 mph becoming west after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 100%. Little or no sleet accumulation expected.
Tuesday
Mostly sunny, with a high near 38. West wind around 15 mph, with gusts as high as 30 mph.
Tuesday Night
Partly cloudy, with a low around 20. West wind 5 to 15 mph.
Wednesday
Mostly sunny, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 24.
Thursday
Partly sunny, with a high near 47.
Thursday Night
Mostly cloudy, with a low around 31.
Friday
Mostly sunny, with a high near 52.
Friday Night
A chance of showers. Mostly cloudy, with a low around 35. Chance of precipitation is 40%.
Saturday
A chance of showers. Mostly cloudy, with a high near 54. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 33.
Sunday
Partly sunny, with a high near 48.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Long Valley NJ
 40.78°N 74.76°W (Elev. 725 ft)
Last Update:
4:13 pm EDT Mar 15, 2026
Forecast Valid:
4pm EDT Mar 15, 2026-6pm EDT Mar 22, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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