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

Andover, Aeroflex-Andover Airport (K12N)

Lat: 41.01°NLon: 74.74°WElev: 584ft.

87°F

31°C

Humidity 34%
Wind Speed SW 12 G 20 mph
Barometer 29.74 in (1006.2 mb)
Dewpoint 55°F (13°C)
Visibility NA
Heat Index85°F (29°C)
Last update 16 Apr 5:54 pm EDT
Extended Forecast for

Sparta NJ

  • Tonight

    Tonight: A slight chance of showers between 9pm and 11pm. Mostly cloudy, with a low around 63. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: A chance of showers, mainly between 2pm and 5pm. Mostly sunny, with a high near 77. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 77 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 72. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 72 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of showers, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 51. Southeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday

    Sunday: Showers. High near 54. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 54 °F

    Showers

  • Sunday Night

    Sunday Night: Rain showers likely, possibly mixing with snow after 11pm, then gradually ending. Partly cloudy, with a low around 33. Chance of precipitation is 60%.

    Low: 33 °F

    Rain/Snow
    Likely then
    Chance
    Rain/Snow

  • Monday

    Monday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers between 9pm and 11pm. Mostly cloudy, with a low around 63. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Friday
A chance of showers, mainly between 2pm and 5pm. Mostly sunny, with a high near 77. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 56. Calm wind.
Saturday
Partly sunny, with a high near 72. Calm wind becoming southeast around 5 mph in the afternoon.
Saturday Night
A chance of showers, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 51. Southeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers. High near 54. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain showers likely, possibly mixing with snow after 11pm, then gradually ending. Partly cloudy, with a low around 33. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 46.
Monday Night
Mostly clear, with a low around 27.
Tuesday
Sunny, with a high near 55.
Tuesday Night
Partly cloudy, with a low around 43.
Wednesday
Partly sunny, with a high near 66.
Wednesday Night
Partly cloudy, with a low around 40.
Thursday
Sunny, with a high near 65.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta NJ
 41.05°N 74.62°W (Elev. 600 ft)
Last Update:
4:10 pm EDT Apr 16, 2026
Forecast Valid:
6pm EDT Apr 16, 2026-6pm EDT Apr 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation