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Key Colony Beach, Florida

City in Monroe County, Florida

Precipitation

What has fallen at Key Colony Beach

0.11 in in the last 24 hours, and none in the 2 days before, to Fri 12 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.11in
Last 3 days
0.11in

Visibility

How far you can see at Key Colony Beach, the next 44 hours

Mist or haze: visibility falls to 2 miles Sat 12 PM.

FriSat

On the radar over Key Colony Beach, FloridaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest Key Colony Beach, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.6 miles away.

measured now3 instruments

MarathonMTH

At an airfield/1.9 mi away/7 ft/5 ft above here

temp, wind, gust, visibility, precip, pressure

Rank310of 2,338

Vaca KeyNDBC-VCAF1

At a river or reservoir gauge/5.4 mi away/-/- ft from here

temp, wind, gust, humidity, pressure

Rank2,242of 2,338

measured daily2 instruments

MarathonMTEF1

At a cooperative observer's station/2.8 mi away/3 ft/1 ft above here

snowfall, snow depth, precip, high, low

Rank1,238of 2,338

Station report

The weather at Marathon, drawn

The nearest airport reporting now, 1.9 mi from Key Colony Beach, Florida. From its report of Oct 15, 2026, 11:53 PM local time: 3 of its 6 sheets.

The sky

No cloud below 12,000 ft; visibility 10 mi or more.

Section of the sky over Marathon, height above the station to scale: no cloud detected below 12,000 feet, the reach of its ceilometer, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MTHFIG. A THE SKY OVER MARATHONSECTION, 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 SHEETNO CLOUD DETECTED BELOW 12,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEMarathon, the skySTATION REPORT · ASOS MTHTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-MTH-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

84.0 F with a dew point of 76.0 F, 77 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,900 ft up.

Chart of the air at Marathon: temperature 84.0 degrees Fahrenheit and dew point 76.0, 77 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,900 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MTHFIG. B THE AIR AT MARATHONTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00060 F70 F80 F90 FSATURATES 1,900 FT ABOVE THE STATION, AT 74.1 FTEMPERATURE 84.0 FDEW POINT 76.0 FSPREAD 8.0 FRELATIVE HUMIDITY 77 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 POINTTITLEMarathon, the airSTATION REPORT · ASOS MTHTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-MTH-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east (80 degrees) at 10 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 22 mph.

Plan of the wind at Marathon, north up: blowing from 80 degrees, the east, at 10 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MTHFIG. C THE WIND AT MARATHONPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 80°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 10 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEMarathon, the windSTATION REPORT · ASOS MTHTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-MTH-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Elsewhere in Florida

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

Near Key Colony Beach

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

Near Key Colony Beach

River and lake gauges