Forecast

    Forecast for Holtsville, NY | Forecast Periods: 14
    Monday
    Mar 16
    2026

    Holtsville, NY

    Updated: 7:03 PM EDT

    34°F

    Areas Of Fog

    16 mph SW
    Precipitation: 98%

    Areas of fog and showers and thunderstorms before 5am. Mostly cloudy. Low around 34, with temperatures rising to around 41 overnight. Southwest wind 16 to 29 mph, with gusts as high as 52 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Hourly Forecast

    TUE23:00
    55°F
    Areas Of Fog
    Dewpoint:12.8°Precip:98%Humidity:100%Wind:29 mph S
    TUE00:00
    54°F
    Areas Of Fog
    Dewpoint:12.2°Precip:98%Humidity:100%Wind:29 mph S
    TUE01:00
    52°F
    Areas Of Fog
    Dewpoint:9.4°Precip:98%Humidity:89%Wind:28 mph SW
    TUE02:00
    50°F
    Chance Rain Showers
    Dewpoint:6.7°Precip:43%Humidity:80%Wind:25 mph W
    TUE03:00
    47°F
    Chance Rain Showers
    Dewpoint:4.4°Precip:43%Humidity:76%Wind:23 mph W
    TUE04:00
    44°F
    Chance Rain Showers
    Dewpoint:2.8°Precip:43%Humidity:76%Wind:20 mph W
    TUE05:00
    41°F
    Mostly Cloudy
    Dewpoint:0.6°Precip:2%Humidity:73%Wind:16 mph W
    TUE06:00
    38°F
    Mostly Sunny
    Dewpoint:-1.1°Precip:2%Humidity:73%Wind:15 mph W
    TUE07:00
    36°F
    Mostly Sunny
    Dewpoint:-3.3°Precip:2%Humidity:67%Wind:14 mph W
    TUE08:00
    35°F
    Sunny
    Dewpoint:-4.4°Precip:0%Humidity:64%Wind:14 mph W
    TUE09:00
    35°F
    Sunny
    Dewpoint:-5.6°Precip:0%Humidity:59%Wind:14 mph W
    TUE10:00
    36°F
    Sunny
    Dewpoint:-6.1°Precip:0%Humidity:54%Wind:15 mph W
    TUE11:00
    37°F
    Sunny
    Dewpoint:-6.1°Precip:0%Humidity:52%Wind:15 mph W
    TUE12:00
    38°F
    Sunny
    Dewpoint:-6.7°Precip:0%Humidity:48%Wind:15 mph W
    TUE13:00
    40°F
    Mostly Sunny
    Dewpoint:-7.2°Precip:0%Humidity:42%Wind:14 mph W
    TUE14:00
    41°F
    Mostly Sunny
    Dewpoint:-7.2°Precip:0%Humidity:41%Wind:14 mph W
    TUE15:00
    41°F
    Mostly Sunny
    Dewpoint:-7.2°Precip:0%Humidity:41%Wind:14 mph W
    TUE16:00
    42°F
    Mostly Sunny
    Dewpoint:-7.2°Precip:0%Humidity:39%Wind:13 mph W
    TUE17:00
    41°F
    Mostly Sunny
    Dewpoint:-7.2°Precip:0%Humidity:41%Wind:13 mph W
    TUE18:00
    39°F
    Partly Cloudy
    Dewpoint:-7.2°Precip:0%Humidity:44%Wind:12 mph W
    TUE19:00
    37°F
    Partly Cloudy
    Dewpoint:-7.2°Precip:0%Humidity:48%Wind:10 mph W
    WED20:00
    35°F
    Partly Cloudy
    Dewpoint:-7.2°Precip:0%Humidity:52%Wind:10 mph W
    WED21:00
    34°F
    Partly Cloudy
    Dewpoint:-7.2°Precip:0%Humidity:54%Wind:10 mph W
    WED22:00
    33°F
    Partly Cloudy
    Dewpoint:-7.8°Precip:0%Humidity:53%Wind:9 mph W

    Extended Forecast

    Tuesday

    Tue, Mar 17
    42°F
    Mostly Sunny
    15 mph W
    Precipitation: 2%
    Mostly sunny, with a high near 42. West wind around 15 mph, with gusts as high as 28 mph.

    Tuesday Night

    Tue, Mar 17
    24°F
    Partly Cloudy
    7 mph W
    Precipitation: 0%
    Partly cloudy. Low around 24, with temperatures rising to around 26 overnight. Wind chill values as low as 18. West wind 7 to 12 mph, with gusts as high as 23 mph.

    Wednesday

    Wed, Mar 18
    37°F
    Mostly Sunny
    7 mph W
    Precipitation: 0%
    Mostly sunny, with a high near 37. Wind chill values as low as 17. West wind around 7 mph.

    Wednesday Night

    Wed, Mar 18
    28°F
    Partly Cloudy
    5 mph S
    Precipitation: 1%
    Partly cloudy. Low around 28, with temperatures rising to around 30 overnight. South wind around 5 mph.

    Thursday

    Thu, Mar 19
    43°F
    Mostly Sunny
    2 mph S
    Precipitation: 1%
    Mostly sunny, with a high near 43.

    Thursday Night

    Thu, Mar 19
    33°F
    Mostly Cloudy then Slight Chance Light Rain
    2 mph SW
    Precipitation: 15%
    A slight chance of rain after 2am. Mostly cloudy, with a low around 33.

    Friday

    Fri, Mar 20
    49°F
    Slight Chance Light Rain
    3 mph SW
    Precipitation: 15%
    A slight chance of rain. Mostly sunny, with a high near 49.

    Friday Night

    Fri, Mar 20
    35°F
    Chance Light Rain
    7 mph SW
    Precipitation: 49%
    A chance of rain. Mostly cloudy, with a low around 35. Chance of precipitation is 50%.

    Saturday

    Sat, Mar 21
    48°F
    Chance Light Rain
    6 mph W
    Precipitation: 49%
    A chance of rain. Partly sunny, with a high near 48. Chance of precipitation is 50%.

    Saturday Night

    Sat, Mar 21
    34°F
    Chance Light Rain
    9 mph SW
    Precipitation: 32%
    A chance of rain. Mostly cloudy, with a low around 34. Chance of precipitation is 30%.

    Sunday

    Sun, Mar 22
    47°F
    Chance Light Rain
    8 mph W
    Precipitation: 29%
    A chance of rain. Mostly cloudy, with a high near 47. Chance of precipitation is 30%.

    Sunday Night

    Sun, Mar 22
    32°F
    Chance Light Rain
    10 mph NW
    Precipitation: 25%
    A chance of rain. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.

    Monday

    Mon, Mar 23
    46°F
    Slight Chance Light Rain then Mostly Sunny
    9 mph NW
    Precipitation: 21%
    A slight chance of rain before 8am. Mostly sunny, with a high near 46.

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