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

Briefing for Impacts from Hurricane Erin through Friday

Hurricane Erin is expected to bring several coastal and marine hazards to the coasts of New Jersey and Delaware through Friday. Widespread coastal flooding, high surf, high risk of rip currents, beach erosion, and dangerous marine conditions are forecast. View this briefing for details on these threats. Read More >

Current conditions at

Andover, Aeroflex-Andover Airport (K12N)

Lat: 41.01°NLon: 74.74°WElev: 584ft.

59°F

15°C

Humidity 96%
Wind Speed NE 7 mph
Barometer 30.04 in (1017.1 mb)
Dewpoint 58°F (14°C)
Visibility NA
Last update 20 Aug 5:54 pm EDT
Extended Forecast for

2 Miles ESE Sparta NJ

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Cloudy, with a low around 56. Northeast wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 56 °F

    Showers
    Likely

  • Thursday

    Thursday: A slight chance of showers before 9am. Mostly cloudy, with a high near 68. Northeast wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 68 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 54. Northeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 54 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 80. North wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. Calm wind.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.

    High: 77 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.

    Low: 63 °F

    Showers
    Likely

Detailed Forecast

Tonight
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Cloudy, with a low around 56. Northeast wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A slight chance of showers before 9am. Mostly cloudy, with a high near 68. Northeast wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 54. Northeast wind around 10 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 80. North wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 59. Calm wind.
Saturday
Sunny, with a high near 81.
Saturday Night
Partly cloudy, with a low around 62.
Sunday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.
Monday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 77. Chance of precipitation is 50%.
Monday Night
A chance of thunderstorms. Partly cloudy, with a low around 56. Chance of precipitation is 30%.
Tuesday
Sunny, with a high near 73.
Tuesday Night
Mostly clear, with a low around 52.
Wednesday
Mostly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Sparta NJ
 41.03°N 74.6°W (Elev. 1204 ft)
Last Update:
4:10 pm EDT Aug 20, 2025
Forecast Valid:
6pm EDT Aug 20, 2025-6pm EDT Aug 27, 2025
 
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