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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Andover, Aeroflex-Andover Airport (K12N)

Lat: 41.01°NLon: 74.74°WElev: 584ft.

59°F

15°C

Humidity 62%
Wind Speed NE 6 mph
Barometer 30.22 in (1023.0 mb)
Dewpoint 46°F (8°C)
Visibility NA
Last update 19 Sep 8:54 am EDT
Extended Forecast for

Hackettstown NJ

  • Today

    Today: Mostly sunny, with a high near 72. Northeast wind around 5 mph becoming calm in the afternoon.

    High: 72 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 5pm. High near 68. Southeast wind around 5 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 68 °F

    Showers

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely before 8pm, then showers likely between 8pm and 2am. Mostly cloudy, with a low around 53. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 53 °F

    Showers
    Likely

  • Monday

    Monday: Partly sunny, with a high near 67. Northeast wind around 5 mph.

    High: 67 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of showers after 2am. Mostly cloudy, with a low around 47. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers. Mostly cloudy, with a high near 61. Chance of precipitation is 30%.

    High: 61 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 62.

    High: 62 °F

    Mostly Cloudy

Detailed Forecast

Today
Mostly sunny, with a high near 72. Northeast wind around 5 mph becoming calm in the afternoon.
Tonight
Mostly cloudy, with a low around 54. Calm wind.
Sunday
Showers, with thunderstorms also possible after 5pm. High near 68. Southeast wind around 5 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Showers and thunderstorms likely before 8pm, then showers likely between 8pm and 2am. Mostly cloudy, with a low around 53. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Partly sunny, with a high near 67. Northeast wind around 5 mph.
Monday Night
A chance of showers after 2am. Mostly cloudy, with a low around 47. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
A chance of showers. Mostly cloudy, with a high near 61. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 46.
Wednesday
Mostly cloudy, with a high near 62.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 46. Chance of precipitation is 30%.
Thursday
A chance of showers. Mostly cloudy, with a high near 61. Chance of precipitation is 30%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 46. Chance of precipitation is 40%.
Friday
A chance of showers. Partly sunny, with a high near 65. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hackettstown NJ
 40.85°N 74.83°W (Elev. 594 ft)
Last Update:
4:09 am EDT Sep 19, 2026
Forecast Valid:
9am EDT Sep 19, 2026-6pm EDT Sep 25, 2026
 
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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