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.

21°F

-6°C

Humidity 52%
Wind Speed Calm
Barometer 30.29 in (1027.1 mb)
Dewpoint 6°F (-14°C)
Visibility NA
Last update 18 Mar 5:54 am EDT
Extended Forecast for

Sparta NJ

  • Today

    Today: Increasing clouds, with a high near 39. Northwest wind around 5 mph becoming calm in the afternoon.

    High: 39 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Partly cloudy, with a low around 25. South wind around 5 mph.

    Low: 25 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 46. Calm wind becoming south around 5 mph in the afternoon.

    High: 46 °F

    Partly Sunny

  • Thursday Night

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

    Low: 31 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of rain after 2pm. Partly sunny, with a high near 54. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 54 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Friday Night

    Friday Night: Rain likely, mainly after 2am. Mostly cloudy, with a low around 40. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 40 °F

    Rain Likely

  • Saturday

    Saturday: Rain likely, mainly before 8am. Partly sunny, with a high near 58. Chance of precipitation is 60%.

    High: 58 °F

    Rain Likely
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain after 8am. Mostly cloudy, with a high near 60. Chance of precipitation is 40%.

    High: 60 °F

    Chance Rain

Detailed Forecast

Today
Increasing clouds, with a high near 39. Northwest wind around 5 mph becoming calm in the afternoon.
Tonight
Partly cloudy, with a low around 25. South wind around 5 mph.
Thursday
Partly sunny, with a high near 46. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 31. Calm wind.
Friday
A slight chance of rain after 2pm. Partly sunny, with a high near 54. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 20%.
Friday Night
Rain likely, mainly after 2am. Mostly cloudy, with a low around 40. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Rain likely, mainly before 8am. Partly sunny, with a high near 58. Chance of precipitation is 60%.
Saturday Night
Mostly cloudy, with a low around 39.
Sunday
A chance of rain after 8am. Mostly cloudy, with a high near 60. Chance of precipitation is 40%.
Sunday Night
A chance of rain before 2am. Mostly cloudy, with a low around 35. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 47.
Monday Night
Mostly clear, with a low around 24.
Tuesday
Mostly sunny, with a high near 46.
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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:
4:34 am EDT Mar 18, 2026
Forecast Valid:
6am EDT Mar 18, 2026-6pm EDT Mar 24, 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