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

Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Current conditions at

Somerville, Somerset Airport (KSMQ)

Lat: 40.62°NLon: 74.67°WElev: 105ft.

Mostly Cloudy

85°F

29°C

Humidity 48%
Wind Speed Vrbl 3 mph
Barometer 29.92 in (1013.2 mb)
Dewpoint 63°F (17°C)
Visibility 9.00 mi
Heat Index86°F (30°C)
Last update 31 Jul 1:53 pm EDT
Extended Forecast for

Long Valley NJ

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 83. West wind around 5 mph.

    High: 83 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 63. Southwest wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 84. Calm wind becoming south around 5 mph in the morning.

    High: 84 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 66. Southeast wind around 5 mph becoming calm.

    Low: 66 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers after 2pm. Mostly cloudy, with a high near 83. Calm wind becoming south around 5 mph in the morning. Chance of precipitation is 30%.

    High: 83 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: Showers likely and possibly a thunderstorm before 8am, then showers likely between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 81. Chance of precipitation is 70%.

    High: 81 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.

    High: 81 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 83. West wind around 5 mph.
Tonight
Partly cloudy, with a low around 63. Southwest wind around 5 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 84. Calm wind becoming south around 5 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 66. Southeast wind around 5 mph becoming calm.
Sunday
A chance of showers after 2pm. Mostly cloudy, with a high near 83. Calm wind becoming south around 5 mph in the morning. Chance of precipitation is 30%.
Sunday Night
A chance of showers before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Showers likely and possibly a thunderstorm before 8am, then showers likely between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 81. Chance of precipitation is 70%.
Monday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
Tuesday
A chance of showers after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Tuesday Night
A chance of showers before 8pm. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 84. Chance of precipitation is 40%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.
Thursday
A chance of showers. Partly sunny, with a high near 85. Chance of precipitation is 50%.
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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:
12:46 pm EDT Jul 31, 2026
Forecast Valid:
2pm EDT Jul 31, 2026-6pm EDT Aug 6, 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