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

Hazardous Weather Conditions

Current conditions at

Andover, Aeroflex-Andover Airport (K12N)

Lat: 41.01°NLon: 74.74°WElev: 584ft.

13°F

-11°C

Humidity 56%
Wind Speed Vrbl 3 mph
Barometer 30.17 in (1023.4 mb)
Dewpoint 0°F (-18°C)
Visibility NA
Last update 20 Jan 4:54 am EST
Extended Forecast for

Sparta NJ

Cold Weather Advisory until January 20, 10:00am
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory until January 20, 10:00am

    NOW until 10:00am Tue

    Cold Weather Advisory

  • Overnight

    Low: 10 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 20. Wind chill values as low as -1. West wind 10 to 15 mph.

    High: 20 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 5. Wind chill values as low as -6. Southwest wind around 5 mph.

    Low: 5 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 30. Wind chill values as low as -4. South wind 5 to 15 mph.

    High: 30 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 24. Southwest wind 5 to 10 mph.

    Low: 24 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 19.

    Low: 19 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 28.

    High: 28 °F

    Partly Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around 10. Wind chill values as low as zero. West wind around 10 mph.
Tuesday
Sunny, with a high near 20. Wind chill values as low as -1. West wind 10 to 15 mph.
Tuesday Night
Mostly clear, with a low around 5. Wind chill values as low as -6. Southwest wind around 5 mph.
Wednesday
Increasing clouds, with a high near 30. Wind chill values as low as -4. South wind 5 to 15 mph.
Wednesday Night
Mostly cloudy, with a low around 24. Southwest wind 5 to 10 mph.
Thursday
Partly sunny, with a high near 40.
Thursday Night
Partly cloudy, with a low around 19.
Friday
Partly sunny, with a high near 28.
Friday Night
Partly cloudy, with a low around 5.
Saturday
Partly sunny, with a high near 15.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 5. Chance of precipitation is 40%.
Sunday
A chance of snow. Mostly cloudy, with a high near 17. Chance of precipitation is 50%.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 6. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 20.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sparta NJ
 41.05°N 74.62°W (Elev. 600 ft)
Last Update:
4:11 am EST Jan 20, 2026
Forecast Valid:
4am EST Jan 20, 2026-6pm EST Jan 26, 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