Hempstead, NY 11550 Weather

Nassau County3:40 AM EDT40.70°N, 73.62°W
Coastal Flood Statement from 5:00 AM Thu until 11:00 AM Thu

Current conditions

Mostly Cloudy
52°
Mostly Cloudy
Feels like 52°
High 66°·Low 47° tonight
WindN 16 mph
Humidity58%
Dew point37°
Pressure30.00 inHg
Visibility10 mi
Cloud cover65%
UV index0 Low
Sunrise7:14 AM
Sunset6:05 PM

Observed at New York, Kennedy International Airport · 1 hr ago

Forecast

10-day

  • Overnight

    Mostly cloudy, with a low around 47. North wind around 14 mph, with gusts as high as 24 mph.

  • Thursday

    Sunny. High near 66, with temperatures falling to around 64 in the afternoon. North wind around 15 mph.

  • Thursday Night

    Clear, with a low around 45. North wind around 13 mph.

National Weather Service forecast updated 7 hrs ago.

Hourly

Hourly forecast
  1. Now Mostly Cloudy 49°
  2. 4 AM Mostly Cloudy 48°
  3. 5 AM Mostly Cloudy 47°
  4. 6 AM Partly Sunny 47°
  5. 7 AM Partly Sunny 47°
  6. 8 AM Mostly Sunny 48°
  7. 9 AM Mostly Sunny 52°
  8. 10 AM Sunny 55°
  9. 11 AM Sunny 58°
  10. 12 PM Sunny 60°
  11. 1 PM Sunny 62°
  12. 2 PM Sunny 64°
  13. 3 PM Sunny 65°
  14. 4 PM Sunny 65°
  15. 5 PM Sunny 64°
  16. 6 PM Clear 63°
  17. 7 PM Clear 61°
  18. 8 PM Clear 58°
  19. 9 PM Clear 57°
  20. 10 PM Clear 56°
  21. 11 PM Clear 55°
  22. Fri12 AM Clear 53°
  23. 1 AM Clear 51°
  24. 2 AM Clear 51°

10-day forecast

Details
  1. TonightOct 21 Mostly Cloudy Mostly Cloudy47°
  2. TodayOct 22 Sunny Sunny45°66°
  3. FriOct 23 Sunny Sunny41°58°
  4. SatOct 24 Sunny Sunny42°58°
  5. SunOct 25 Sunny Sunny46°62°
  6. MonOct 26 Sunny Sunny50°66°
  7. TueOct 27 Mostly Sunny Mostly Sunny47°63°
  8. WedOct 28 Mostly Sunny Mostly Sunny59°
  9. ThuOct 29 Mostly sunny Mostly sunny48°62°
  10. FriOct 30 Sunny Sunny45°62°

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 Hempstead

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Air quality

24
Good
Ozone

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

Forecast

  • ThuGood (26)

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 33 s tomorrow)
Waxing Gibbous · 83% lit
Moonrise 4:08 PM Moonset 3:15 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low62° / 49°
Record high88° (1979)
Record low30° (1940)
Wettest1.51 in (2014)
Month to date2.22 in (normal 3.02 in)

Ny City Central Park, records since 1869. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in OKX, issued 11 hrs ago

What Has Changed

Timing of marine hazards has changed some. See marine section below.

Key Messages

1) Mainly dry conditions will continue into early next week with gradually decreasing N-NE winds through the end of this week.

2) A brief period of minor coastal flooding possible along the south shore back bays of western LI and portions of Lower New York Harbor this afternoon into early this evening.

Key Message 1

Deepening low pressure over the western Atlantic, along the 70th meridian and south of the 40th parallel, will track slowly north tonight and then take a more eastward turn on Thursday. Guidance remains in very good agreement with the track of the system, taking it well south and east of the area. High pressure will then slowly build in through the weekend.

Northerly winds will continue to gust, especially along the coast, up to 30mph. Highest winds and gusts will be during the daytime hours with max mixing in the boundary layer. However, winds will begin to gradually diminish Thursday afternoon into Friday as the low pulls away and high pressure builds in from the west.

In addition, with the northerly flow on the backside of the low and a passing shortwave trough to the north across eastern Canada into the Northeast Thursday night, cooler air will arrive for Friday into the start of the weekend. Daytime highs will go from the 60s on Thursday to the 50s for Friday and Saturday. Additionally, with winds decreasing, frost will be possible Friday and Saturday nights with lows in the 30s away from the NYC metro. A warming trend begins early next week.

.KEY MESSAGE 2... The combination of a prolonged period of easterly swells from offshore low pressure and increasing astronomical tides with the approach of a full moon (Monday 10/26), will allow for water levels to come close to minor coastal flood benchmarks into early this evening along the south shore back bays of western LI and portions of Lower NY. Latest observations show water levels coming in several tenths below forecast. It is possible, that water level stay below, but will remain on the safe side until this high tide cycle passes. Coastal flood advisories and statements remain in effect.

Thereafter, it looks real marginal heading into Thursday and Friday with winds becoming more northerly and decreasing easterly swells.

Outlook For 18z Thursday Through Monday

Thursday: VFR. NNW winds G15-25kt.

Friday: VFR. NNE winds, with G15-20kt mainly in morning.

Saturday, Sunday, and Monday: VFR with light winds.

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.