Hempstead, NY 11549 Weather

Nassau County11:11 PM EDT40.72°N, 73.60°W
Coastal Flood Statement from 5:00 AM Fri until 8:00 AM Fri

Current conditions

Clear
57°
Clear
Feels like 57°
High 59° Friday·Low 46° tonight
WindN 8 mph
Humidity47%
Dew point37°
Pressure30.10 inHg
Visibility10 mi
Cloud cover4%
UV index0 Low
Sunrise7:14 AM
Sunset6:05 PM

Observed at New York, Kennedy International Airport · 51 min ago

Forecast

10-day

  • Tonight

    Clear. Low around 46, with temperatures rising to around 48 overnight. North wind 9 to 13 mph.

  • Friday

    Sunny. High near 59, with temperatures falling to around 56 in the afternoon. North wind 8 to 12 mph.

  • Friday Night

    Mostly clear, with a low around 41. North wind 3 to 7 mph.

National Weather Service forecast updated 7 hrs ago.

Hourly

Hourly forecast
  1. Now Clear 55°
  2. Fri12 AM Clear 54°
  3. 1 AM Clear 53°
  4. 2 AM Clear 52°
  5. 3 AM Clear 50°
  6. 4 AM Clear 49°
  7. 5 AM Clear 48°
  8. 6 AM Sunny 47°
  9. 7 AM Sunny 46°
  10. 8 AM Sunny 47°
  11. 9 AM Sunny 48°
  12. 10 AM Sunny 50°
  13. 11 AM Sunny 53°
  14. 12 PM Sunny 55°
  15. 1 PM Sunny 57°
  16. 2 PM Sunny 58°
  17. 3 PM Sunny 59°
  18. 4 PM Sunny 58°
  19. 5 PM Sunny 56°
  20. 6 PM Clear 54°
  21. 7 PM Mostly Clear 52°
  22. 8 PM Mostly Clear 51°
  23. 9 PM Partly Cloudy 49°
  24. 10 PM Mostly Clear 48°

10-day forecast

Details
  1. TodayOct 22 Sunny Sunny46°67°
  2. FriOct 23 Sunny Sunny41°59°
  3. SatOct 24 Sunny Sunny42°61°
  4. SunOct 25 Sunny Sunny45°63°
  5. MonOct 26 Sunny Sunny51°67°
  6. TueOct 27 Sunny Sunny46°62°
  7. WedOct 28 Mostly Sunny Mostly Sunny49°59°
  8. ThuOct 29 Partly cloudy Partly cloudy45°64°
  9. FriOct 30 Cloudy Cloudy45°60°
  10. SatOct 31 Sunny Sunny41°57°

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

Radar

Full map
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Weather news near Hempstead

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Air quality

33
Good
Ozone

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

Forecast

  • ThuGood (19)
  • FriGood (19)

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 7:14 AM
Sunset 6:05 PM
Daylight 10 h 51 min (−2 min 31 s tomorrow)
Waxing Gibbous · 89% lit
Moonrise 4:08 PM Moonset 3:15 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low62° / 48°
Record high80° (2024)
Record low37° (2003)
Wettest1.42 in (2014)
Yesterday65° / 50°
Month to date1.75 in (normal 2.59 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 3 hrs ago

What Has Changed

Small craft advisories have expanded in area and have been extended in time into tonight, Friday and Friday night. Coastal flood statement for Southern Nassau for early Friday morning with brief minor coastal flooding.

Key Messages

1) Dry conditions and gradually warming daytime temperatures are expected Friday through Monday. Dry conditions continue through much of next week.

2) For Friday night into the weekend, locations within our region (mainly across interior NE NJ, the Lower Hudson Valley, Southern CT, parts of Eastern Suffolk NY) there will be frost potential for late night and early morning.

3) Minor coastal flooding possible in back bays of Nassau County NY for the morning high tide. For subsequent high tide cycles through early Saturday, additional minor coastal flooding possible for the same location.

Key Message 1

Daytime high temperatures trend from below normal Friday to near normal Saturday and then more above normal Sunday and Monday. Dry conditions are forecast to prevail.

Mid levels from numerical weather prediction models indicate rising heights into the weekend. Trough exits east of the Canadian Maritimes with ridge moving in from the west. The ridging weakens late this weekend into early next week. At the surface, the low pressure associated with Josephine moves well out into the Northern Atlantic and east of Canadian Maritimes through Friday as high pressure builds in from the north across our local region.

Strong surface high pressure will be the main feature heading into the weekend with prevailing dry conditions. The pressure gradient will gradually weaken allowing for lighter winds. This will further allow for greater daytime insolation and greater nighttime radiational cooling with a more vast range in temperature between max and min.

Surface high pressure weakens and shifts farther south and west Sunday night into early next week. Dry conditions prevail through this weekend and into next week despite a cold front moving across late Monday into Monday night. Temperatures warm up for daytime highs this weekend and into early next week. Warmest day looks to be Monday with models showing relatively highest 850mb temperatures near 11 to 13 degrees C. Some locations are forecast to reach near 70 degrees Fahrenheit for Monday's highs. That is the warmest day of the forecast period through next week.

.KEY MESSAGE 2... With more radiational cooling each night, temperatures in outlying areas and rural sections will drop further.

Frost is expected to develop in these areas, mainly across the northern half of the forecast area. For tonight, patchy frost is forecast across parts of the interior and will be limited in spatial extent due to winds staying up in the boundary layer. Lows tonight range from mid 30s to upper 40s for much of the area.

Outlook For 00z Saturday Through Tuesday

Friday night through Tuesday: 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 4Conservative index and reflects what the press published. Terms of use.