Great River, NY Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Thu
Aug 6
Partly Cloudy
Close Hourly
-º / 74º 23% SW 9 mph 91%
11pm Partly Cloudy 79º 4% SW 10 mph 90%
Fri
Aug 7
Partly Cloudy
View Hourly
87º / 74º 15% SW 11 mph 76%
12am Partly Cloudy 78º 3% SW 9 mph 90%
1am Mostly Clear 78º 22% SW 8 mph 90%
2am Mostly Clear 78º 23% SW 7 mph 90%
3am Mostly Clear 78º 3% WSW 6 mph 90%
4am Mostly Clear 77º 3% WSW 6 mph 91%
5am Mostly Clear 76º 4% WSW 5 mph 94%
6am Mostly Sunny 75º 8% WSW 4 mph 97%
7am Mostly Sunny 76º 7% WSW 4 mph 95%
8am Mostly Sunny 79º 8% W 5 mph 89%
9am Mostly Sunny 82º 6% W 5 mph 81%
10am Mostly Sunny 83º 5% WSW 6 mph 77%
11am Partly Cloudy 84º 4% SW 7 mph 74%
12pm Partly Cloudy 85º 7% SW 8 mph 70%
1pm Partly Cloudy 86º 5% SW 9 mph 69%
2pm Partly Cloudy 86º 15% SSW 10 mph 67%
3pm Mostly Cloudy 86º 15% SSW 11 mph 67%
4pm Partly Cloudy 85º 15% SSW 11 mph 71%
5pm Partly Cloudy 83º 15% SSW 11 mph 74%
6pm Partly Cloudy 82º 15% SSW 11 mph 77%
7pm Partly Cloudy 81º 15% SW 9 mph 82%
8pm Mostly Cloudy 80º 15% SSW 8 mph 85%
9pm Mostly Cloudy 79º 15% SW 7 mph 87%
10pm Cloudy 79º 15% SW 7 mph 87%
11pm Cloudy 78º 21% SW 7 mph 89%
Sat
Aug 8
Partly Cloudy
View Hourly
85º / 74º 24% SW 14 mph 77%
12am Mostly Cloudy 77º 24% SW 6 mph 89%
1am Mostly Cloudy 77º 24% SW 6 mph 90%
2am Mostly Cloudy 76º 15% SW 6 mph 91%
3am Mostly Cloudy 76º 16% SW 6 mph 92%
4am Isolated Thunderstorms 76º 32% SW 7 mph 93%
5am Mostly Cloudy 76º 8% SW 7 mph 93%
6am Mostly Cloudy 75º 7% WSW 7 mph 93%
7am Partly Cloudy 75º 7% WSW 6 mph 94%
8am Partly Cloudy 78º 7% WSW 8 mph 90%
9am Partly Cloudy 80º 6% WSW 9 mph 84%
10am Partly Cloudy 81º 5% SW 10 mph 79%
11am Partly Cloudy 82º 4% SW 11 mph 77%
12pm Partly Cloudy 83º 3% SW 11 mph 73%
1pm Sunny 84º 3% SW 12 mph 70%
2pm Sunny 85º 4% SSW 13 mph 70%
3pm Sunny 84º 7% SSW 13 mph 72%
4pm Partly Cloudy 84º 15% SSW 13 mph 72%
5pm Partly Cloudy 84º 15% SSW 13 mph 74%
6pm Few Showers 83º 33% SW 13 mph 74%
7pm Partly Cloudy 82º 15% SW 10 mph 77%
8pm Partly Cloudy 80º 15% SW 10 mph 82%
9pm Mostly Cloudy 80º 15% SW 9 mph 81%
10pm Mostly Cloudy 79º 22% SW 10 mph 84%
Sun
Aug 9
Partly Cloudy 87º / 72º 10% WSW 11 mph 69%
Mon
Aug 10
Partly Cloudy 85º / 74º 4% SSW 10 mph 61%
Tue
Aug 11
PM Thunderstorms 86º / 70º 35% WSW 13 mph 66%
Wed
Aug 12
Mostly Cloudy 83º / 71º 24% WSW 9 mph 69%
Thu
Aug 13
Partly Cloudy 83º / 70º 24% SW 12 mph 68%

Weather Radar for Great River, NY See Radar

* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Great River, NY

Tonight
Low : 77ºF
SW wind 10 to 13 kt decreasing to 7 to 10 kt after midnight. Partly cloudy. Seas around 1 ft.
Friday
High : 83ºF
WSW wind 5 to 10 kt. A slight chance of showers and thunderstorms between 2pm and 5pm. Seas around 1 ft.
Friday Night
Low : 77ºF
SW wind 5 to 9 kt. A chance of showers and thunderstorms between 8pm and 2am. Seas around 1 ft.
Saturday
High : 83ºF
WSW wind 9 to 13 kt, with gusts as high as 21 kt. A slight chance of showers and thunderstorms after 2pm. Seas around 1 ft.
Saturday Night
Low : 76ºF
WSW wind 8 to 12 kt. A slight chance of showers and thunderstorms before 2am. Seas around 1 ft.
Sunday
High : 84ºF
WSW wind 7 to 10 kt. Sunny. Seas around 1 ft.
Sunday Night
Low : 73ºF
W wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.
Monday
High : 85ºF
Variable winds less than 5 kt becoming SSW 6 to 11 kt in the morning. Sunny. Seas 1 ft or less.
Monday Night
Low : 75ºF
WSW wind 7 to 9 kt. Partly cloudy. Seas around 1 ft.

NOAA Buoy Data Near Great River, NY See Map

Loading Map...
Loading Buoy Data...

    Wind Speed Forecast for Great River, NY

    FridaySaturday
    Wind Speed (MPH) 10647119766111310
    3am7am11am3pm7pm11pm3am7am11am3pm7pm11pm
    MPH 10647119766111310
    DIR SWWSWWSWSWSSWSWSWSWWSWSWSSWSW

    Current Weather Conditions In Great River, NY

    As Of: 21 minutes ago

    • 79ºF
    • 85ºF
    • 10mph
    • 0º (SW)
    • 17mph
    • Partly Cloudy
    • 10mi
    • 30.10"
    • 90%
    • 0ºF

    The weather right now in Great River, NY is Partly Cloudy. The current temperature is 79°F, and the expected high and low for today, Thursday, August 6, 2026, are -° high temperature and 74°F low temperature. The wind is currently blowing at 10 miles per hour, and coming from the Southwest. The wind is gusting to 17 mph. With the wind and the atmosphere the temperature feels like 85° Fahrenheit. Expected precipitation is 4 percent, with current humidity at 90 percent, and air pressure at 30.1 in. Visibility is 10 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Heat Advisory - 2:54pm Thu Aug 6 2026

    ...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM EDT SATURDAY...

    WHAT: Heat index values up to 100.

    WHERE: Northeast Suffolk, Northern Nassau, Northwest Suffolk,
    Southeast Suffolk, Southern Nassau, and Southwest Suffolk Counties.

    WHEN: Until 8 PM EDT Saturday.

    IMPACTS: Hot temperatures and high humidity may cause heat
    illnesses.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    A Heat Advisory is issued when the combination of heat and humidity
    is expected to make it feel like it is 95 to 99 degrees for two or
    more consecutive days, or 100 to 104 degrees for any length of time.

    Seniors and those with chronic health problems or mental health
    conditions are at an increased risk. Homes without air conditioning
    can be much hotter than outdoor temperatures.

    Use air conditioning to stay cool at home or go to a place that has
    air conditioning. If you don't have home air conditioning, continue
    to seek out cool spaces each day as long as it remains hot, and for a
    few days after if your home is still hot. Check on vulnerable
    friends, family members and neighbors.

    To reduce risk during outdoor work, the Occupational Safety and
    Health Administration recommends scheduling frequent rest breaks in
    shaded or air conditioned environments. Anyone overcome by heat
    should be moved to a cool and shaded location. Heat stroke is an
    emergency! In cases of heat stroke call 9 1 1.

    &&