Storm Station
Holtsville, New York
60°
Heavy rain· Feels like 60°·Fresh breeze 22 mph NNE
Rain showers before 2pm, then showers and thunderstorms. Cloudy. High near 68, with temperatures falling to around 65 in the afternoon. Northeast wind 12 to 33 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
-UV
-Air quality
87%Humidity
95%Cloud

What is measuring near here

The 5 instruments nearest Holtsville, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.0 miles away.

measured now3 instruments

I-495 EB @ Rte 112NY001

Beside a road/2.0 mi away/89 ft/8 ft below here

temp, pavement temp, wind, visibility, precip

Rank616of 625

Islip/MacarthurISP

At an airfield/3.2 mi away/98 ft/1 ft above here

temp, wind, gust, visibility, precip, pressure

Rank6of 625

measured daily2 instruments

Holbrook 0.6 NWNY-SF-43

In a volunteer observer's own ground/2.0 mi away/91 ft/6 ft below here

precip, snowfall, snow depth

Rank-

St JamesSTJN6

At a cooperative observer's station/7.1 mi away/128 ft/31 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Islip/Macarthur, drawn

The nearest airport reporting now, 3.2 mi from Holtsville. From its report of Sep 27, 2026, 6:56 AM local time: 3 of its 6 sheets.

The sky

Broken at 900 ft, overcast at 1,800 ft; the ceiling is 900 ft; visibility 2 mi.

Section of the sky over Islip/Macarthur, height above the station to scale: broken cloud with its base at 900 feet, overcast cloud with its base at 1,800 feet, the ceiling at 900 feet, and visibility of 2 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ISPFIG. A THE SKY OVER ISLIP/MACARTHURSECTION, HEIGHT ABOVE THE STATION TO SCALE, EACH LAYER AT THE HEIGHT OF ITS BASE AS REPORTED; COVER IN EIGHTHS OF THE SKY; TOPS NOT MEASUREDFT ABOVE THE STATION05001,0001,5002,0002,5003,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 1,800 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 900 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 900 FTVISIBILITY, MILES: 2 MI0510TITLEIslip/Macarthur, the skySTATION REPORT · ASOS ISPTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-ISP-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

61.0 F with a dew point of 59.0 F, 93 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 500 ft up; the lowest cloud reported is at 900 ft.

Chart of the air at Islip/Macarthur: temperature 61.0 degrees Fahrenheit and dew point 59.0, 93 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 500 feet above the station, against the lowest cloud reported at 900 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ISPFIG. B THE AIR AT ISLIP/MACARTHURTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00050 F60 F70 FSATURATES 500 FT ABOVE THE STATION, AT 58.5 FLOWEST CLOUD REPORTED, BKN 900 FTTEMPERATURE AND DEW POINT 61.0 F, 59.0 FRELATIVE HUMIDITY 93 PER CENTTHE AIR COOLS ABOUT 5.4 F EACH 1,000 FT IT RISES, AND ITS DEW POINT ABOUT 1 FSOLID: THE LIFTED AIR'S TEMPERATURE; DASHED: ITS DEW POINTTITLEIslip/Macarthur, the airSTATION REPORT · ASOS ISPTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-ISP-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the northeast (50 degrees) at 25 mph, gusting 39 mph: force 6, a strong breeze on the Beaufort scale. The strongest gust today was 52 mph.

Plan of the wind at Islip/Macarthur, north up: blowing from 50 degrees, the northeast, at 25 miles an hour, gusting 39; beside it the Beaufort scale from calm to hurricane force, force 6, strong breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ISPFIG. C THE WIND AT ISLIP/MACARTHURPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 50°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE25NOW, 25 MPH7NEAR GALE328GALE39GUST, 39 MPH9STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEIslip/Macarthur, the windSTATION REPORT · ASOS ISPTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-ISP-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Islip/Macarthur, in 6 sheets, each beside the Field Book plates that explain it

-in

Snow on the ground

Elsewhere in New York

29 places, each with its own forecast and its own instruments.

Near Holtsville

The nearest places, each with its own forecast and the instruments nearest it.