Syosset, NY Weather

Nassau County7:15 PM EDT40.83°N, 73.50°WElevation 217 ft

Current conditions

Mostly Clear
50°
Mostly Clear
Feels like 48°
High 58° Saturday·Low 40° tonight
WindN 5 mph
Humidity58%
Dew point36°
Visibility10 mi
Cloud cover9%
UV index0 Low
Sunrise7:15 AM
Sunset6:03 PM

Forecast for this hour (no station report in the last two hours)

Forecast

10-day

  • Friday Night

    Mostly clear, with a low around 40.

  • Saturday

    Sunny, with a high near 58.

  • Saturday Night

    Clear, with a low around 41.

National Weather Service forecast updated 2 days ago.

Hourly

Hourly forecast
  1. Now Mostly Clear 50°
  2. 8 PM Mostly Clear 47°
  3. 9 PM Mostly Clear 45°
  4. 10 PM Mostly Clear 44°
  5. 11 PM Mostly Clear 43°
  6. Sat12 AM Mostly Clear 42°
  7. 1 AM Mostly Clear 41°
  8. 2 AM Mostly Clear 41°
  9. 3 AM Mostly Clear 40°
  10. 4 AM Mostly Clear 40°
  11. 5 AM Mostly Clear 40°
  12. 6 AM Sunny 40°
  13. 7 AM Sunny 40°
  14. 8 AM Sunny 41°
  15. 9 AM Sunny 44°
  16. 10 AM Sunny 48°
  17. 11 AM Sunny 52°
  18. 12 PM Sunny 54°
  19. 1 PM Sunny 56°
  20. 2 PM Sunny 57°
  21. 3 PM Sunny 58°
  22. 4 PM Sunny 58°
  23. 5 PM Sunny 57°
  24. 6 PM Clear 54°

10-day forecast

Details
  1. WedOct 21 Partly Sunny Partly Sunny47°61°
  2. ThuOct 22 Mostly Sunny Mostly Sunny44°64°
  3. TodayOct 23 Sunny Sunny40°56°
  4. SatOct 24 Sunny Sunny41°58°
  5. SunOct 25 Sunny Sunny44°62°
  6. MonOct 26 Sunny Sunny49°66°
  7. TueOct 27 Mostly Sunny Mostly Sunny45°62°
  8. WedOct 28 Cloudy Cloudy47°58°
  9. ThuOct 29 Cloudy Cloudy47°59°
  10. FriOct 30 Cloudy Cloudy56°66°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

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Weather news near Syosset

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Air quality

31
Good
Ozone

Air quality is satisfactory, and air pollution poses little or no risk.

Forecast

  • FriGood (27)
  • SatGood (32)
  • SunModerate (51)

Long Island Region, NY reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:15 AM
Sunset 6:03 PM
Daylight 10 h 48 min (−2 min 33 s tomorrow)
Waxing Gibbous · 94% lit
Moonrise 4:30 PM Moonset 4:20 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low62° / 47°
Record high77° (1978)
Record low33° (1969)
Wettest1.55 in (1990)
Month to date1.75 in (normal 2.71 in)

New York-Kennedy Airport Area, records since 1948. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in OKX, issued 2 hrs ago

What Has Changed

Frost Advisories have been expanded into eastern Suffolk for tonight into early Saturday morning.

Key Messages

1) Dry conditions continue through much of next week.

2) Frost expected inland and across eastern Long Island late tonight into early Saturday morning, and may occur again late Saturday night into early Sunday morning.

3) One last round of spotty minor coastal flooding possible along the back bays of southern Nassau County for the Saturday morning high tide.

Key Message 1

High pressure building from the north will settle over the area this weekend, then drift south on Monday. A cold front moving through Monday night will be moisture starved. High pressure and dry conditions then return for the rest of the week.

.KEY MESSAGE 2... Under mainly clear skies and light winds thanks to high pressure, radiational cooling is expected each night through Sunday night for the outlying areas. Temperatures tonight are expected to drop into the 30s with some 25-30 readings possible well inland and in parts of the Long Island Pine Barrens. Frost Advisories were expanded to eastern Long Island and remain in effect for coastal areas of Westchester and CT. Patchy frost is also possible in parts of western Suffolk. Frost is not expected across the remainder of Long Island, NYC, and the surrounding nearby suburbs.

Similar temperatures expected late Saturday night into early Sunday morning. Another round of Frost Advisories are likely for the aforementioned areas for that time frame.

Upper level ridging throughout the column Saturday night will mean introduction of some slightly warmer air, so frost may be more patchy Sunday night into Monday morning.

.KEY MESSAGE 3... With the approach of a full moon late this weekend and a persistent easterly swell, water levels will be elevated through the next several high tide cycles. Brief minor flooding of the more vulnerable locations near the waterfront and shoreline is possible for the Nassau south shore bays with the Saturday morning high tide cycle.

Outlook For 18z Saturday Through Wednesday

Saturday through Wednesday: VFR.

Detailed information, including hourly TAF wind component forecasts, can be found at: https:/www.weather.gov/zny/n90

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.