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Multiple rounds of storms through Thursday

A briefing on the multiple rounds of storms through Thursday, September 3. Read More >

Current conditions at

Andover, Aeroflex-Andover Airport (K12N)

Lat: 41.01°NLon: 74.74°WElev: 584ft.

67°F

19°C

Humidity 93%
Wind Speed Calm
Barometer 30.01 in (1015.6 mb)
Dewpoint 65°F (18°C)
Visibility NA
Last update 3 Sep 4:54 am EDT
Extended Forecast for

Sparta NJ

  • Overnight

    Overnight: A chance of showers and thunderstorms. Some of the storms could produce heavy rainfall. Cloudy, with a low around 65. Calm wind. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Heavy Rain

  • Thursday

    Thursday: A chance of showers before 10am, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. West wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Partly cloudy, with a low around 66. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms, mainly before 4pm. Partly sunny, with a high near 81. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Partly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. Calm wind.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

Detailed Forecast

Overnight
A chance of showers and thunderstorms. Some of the storms could produce heavy rainfall. Cloudy, with a low around 65. Calm wind. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers before 10am, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. West wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Partly cloudy, with a low around 66. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers and thunderstorms, mainly before 4pm. Partly sunny, with a high near 81. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Partly cloudy, with a low around 59. Calm wind.
Saturday
Sunny, with a high near 76.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 73.
Sunday Night
Mostly clear, with a low around 52.
Labor Day
Sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Partly cloudy, with a low around 57.
Wednesday
Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta NJ
 41.03°N 74.65°W (Elev. 784 ft)
Last Update:
4:10 am EDT Sep 3, 2026
Forecast Valid:
5am EDT Sep 3, 2026-6pm EDT Sep 9, 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