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Groton, New York

Village in Tompkins County, New York

Air quality

The air at Groton

Index 26, good, led by ozone. Read at 11 PM from its reporting area, Central New York Region (NY), 15 miles off.

26Good
  • Fine particles (PM2.5)20Good-
  • Ozone26Good-

The days ahead

Good each day through Fri Oct 16, led by fine particles. Yesterday measured 36, good.

Smoke, the next 46 hours

No smoke near the ground through Sat 8 PM.

FriSat

Precipitation

What has fallen at Groton

None in the last 24 hours; 0.01 in over the last 3 days, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.01in

Visibility

How far you can see at Groton, the next 46 hours

Mist or haze: visibility falls to 3 miles Sat 6 AM.

FriSat

On the radar over Groton, New YorkReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 7 instruments nearest Groton, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.5 miles away.

measured now5 instruments

CortlandN03

At an airfield/7.5 mi away/1,170 ft/153 ft above here

temp, wind, gust, visibility, precip, pressure

Rank971of 1,432

Ithaca 13 E64758

At a climate reference station/12.0 mi away/1,228 ft/211 ft above here

temp, humidity, wind, solar, precip

Rank964of 1,432

Geneva #1S2011

At a soil climate station/39.6 mi away/725 ft/292 ft below here

temp, humidity, soil temp, soil moisture

Rank950of 1,432

measured daily2 instruments

Groton 0.5 NWNY-TM-4

In a volunteer observer's own ground/0.5 mi away/1,034 ft/17 ft above here

precip, snowfall, snow depth

Rank-

FreevilleFVLN6

At a cooperative observer's station/5.1 mi away/1,037 ft/20 ft above here

snowfall, snow depth, precip, high, low

Rank986of 1,432

Station report

The weather at Cortland, drawn

The nearest airport reporting now, 7.5 mi from Groton, New York. From its report of Oct 15, 2026, 11:15 PM local time: 3 of its 6 sheets.

The sky

Overcast at 2,900 ft; the ceiling is 2,900 ft; visibility 10 mi or more.

Section of the sky over Cortland, height above the station to scale: overcast cloud with its base at 2,900 feet, the ceiling at 2,900 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT N03FIG. A THE SKY OVER CORTLANDSECTION, 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 STATION01,0002,0003,0004,0005,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 2,900 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 2,900 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLECortland, the skySTATION REPORT · ASOS N03TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-N03-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

51.8 F with a dew point of 44.6 F, 76 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,700 ft up; the lowest cloud reported is at 2,900 ft.

Chart of the air at Cortland: temperature 51.8 degrees Fahrenheit and dew point 44.6, 76 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,700 feet above the station, against the lowest cloud reported at 2,900 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT N03FIG. B THE AIR AT CORTLANDTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00030 F40 F50 F60 FSATURATES 1,700 FT ABOVE THE STATION, AT 43.0 FLOWEST CLOUD REPORTED, OVC 2,900 FTTEMPERATURE 51.8 FDEW POINT 44.6 FSPREAD 7.2 FRELATIVE HUMIDITY 76 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 POINTTITLECortland, the airSTATION REPORT · ASOS N03TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-N03-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Cortland, north up: calm; beside it the Beaufort scale from calm to hurricane force, force 0, calm, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT N03FIG. C THE WIND AT CORTLANDPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONCALMBEAUFORT FORCELEAST WIND, MPH0CALM0NOW, 0 MPH1LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECortland, the windSTATION REPORT · ASOS N03TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-N03-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Freeville (FVLN6), 5.1 miles from here, read 15 Oct, 08:00. measured daily

Elsewhere in New York

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

Near Groton

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

Near Groton

River and lake gauges