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

Hazardous Weather Conditions

Current conditions at

Sussex, Sussex Airport (KFWN)

Lat: 41.2°NLon: 74.63°WElev: 410ft.

Fair

25°F

-4°C

Humidity 75%
Wind Speed Calm
Barometer 30.35 in (1028.0 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 21 Apr 4:53 am EDT
Extended Forecast for

3 Miles SE Highland Lakes NJ

Freeze Warning until April 21, 09:00am
Click here for hazard details and duration
Freeze Warning
  •  
    Freeze Warning until April 21, 09:00am

    NOW until 9:00am Tue

    Freeze Warning

  • Overnight

    Low: 22 °F

    Frost

  • Tuesday

    Tuesday: Widespread frost before 8am. Otherwise, sunny, with a high near 49. Wind chill values between 20 and 30 early. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 49 °F

    Frost then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain showers before midnight, then a chance of snow showers between midnight and 1am, then rain showers likely after 1am. Increasing clouds, with a low around 38. South wind around 6 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 38 °F

    Chance
    Showers then
    Rain/Snow
    Likely

  • Wednesday

    Wednesday: Showers likely, mainly before 8am. Mostly cloudy, with a high near 54. South wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 54 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

Detailed Forecast

Overnight
Widespread frost. Otherwise, clear, with a low around 22. Light north wind.
Tuesday
Widespread frost before 8am. Otherwise, sunny, with a high near 49. Wind chill values between 20 and 30 early. Calm wind becoming southwest around 6 mph in the afternoon.
Tuesday Night
A chance of rain showers before midnight, then a chance of snow showers between midnight and 1am, then rain showers likely after 1am. Increasing clouds, with a low around 38. South wind around 6 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Wednesday
Showers likely, mainly before 8am. Mostly cloudy, with a high near 54. South wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly cloudy, with a low around 41. Calm wind.
Thursday
Mostly sunny, with a high near 65.
Thursday Night
Partly cloudy, with a low around 43.
Friday
Mostly sunny, with a high near 61.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 40.
Saturday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 49. Chance of precipitation is 60%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 39. Chance of precipitation is 60%.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 54.
Sunday Night
Mostly cloudy, with a low around 40.
Monday
Mostly sunny, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Highland Lakes NJ
 41.14°N 74.43°W (Elev. 1302 ft)
Last Update:
2:19 am EDT Apr 21, 2026
Forecast Valid:
5am EDT Apr 21, 2026-6pm EDT Apr 27, 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