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

Extreme Heat and Excessive Rainfall Today

Dangerous and extreme heat will remain across portions of the southern U.S. through the weekend. A heat wave over the Southwest U.S. will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Multiple rounds of thunderstorms will produce heavy to excessive rainfall with significant flash flooding across portions of southern New England. Read More >

Current conditions at

Somerville, Somerset Airport (KSMQ)

Lat: 40.62°NLon: 74.67°WElev: 105ft.

Mostly Cloudy

67°F

19°C

Humidity 93%
Wind Speed Calm
Barometer 29.65 in (1004.1 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 30 Jul 2:53 am EDT
Extended Forecast for

Piscataway NJ

  • Overnight

    Overnight: Scattered showers. Mostly cloudy, with a low around 62. West wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 62 °F

    Scattered
    Showers

  • Thursday

    Thursday: Scattered showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 79. Northwest wind 10 to 15 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Scattered
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 62. North wind around 5 mph becoming calm after midnight.

    Low: 62 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 84. Northwest wind around 5 mph.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 64. South wind 5 to 10 mph becoming light and variable after midnight.

    Low: 64 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 85.

    High: 85 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 40%.

    High: 82 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.

    Low: 66 °F

    Showers
    Likely

Detailed Forecast

Overnight
Scattered showers. Mostly cloudy, with a low around 62. West wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Scattered showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 79. Northwest wind 10 to 15 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Partly cloudy, with a low around 62. North wind around 5 mph becoming calm after midnight.
Friday
Sunny, with a high near 84. Northwest wind around 5 mph.
Friday Night
Partly cloudy, with a low around 64. South wind 5 to 10 mph becoming light and variable after midnight.
Saturday
Partly sunny, with a high near 85.
Saturday Night
Mostly cloudy, with a low around 66.
Sunday
A chance of showers after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 40%.
Sunday Night
Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Monday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 40%.
Monday Night
A chance of thunderstorms. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 66.
Wednesday
Sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Piscataway NJ
 40.52°N 74.46°W (Elev. 98 ft)
Last Update:
3:20 pm EDT Jul 29, 2026
Forecast Valid:
3am EDT Jul 30, 2026-6pm EDT Aug 5, 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