Storm Station
Castlewood, South Dakota
63°
Overcast· Feels like 63°·Light air 3 mph S
Widespread fog before 10am. Partly sunny. High near 73, with temperatures falling to around 70 in the afternoon. Northeast wind 2 to 9 mph.
-UV
-Air quality
97%Humidity
89%Cloud

What is measuring near here

The 5 instruments nearest Castlewood, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.2 miles away.

measured now3 instruments

Sd RWIS AlsvilleSD610

Beside a road/10.6 mi away/1,683 ft/7 ft below here

temp, pavement temp, wind, visibility, precip

Rank315of 427

WatertownATY

At an airfield/14.6 mi away/1,725 ft/35 ft above here

temp, wind, gust, visibility, precip, pressure

Rank17of 427

Big Sioux River 3 NW WatertownWBSS2

At a river or reservoir gauge/16.2 mi away/1,726 ft/36 ft above here

temp, wind, gust, humidity, pressure

Rank123of 427

measured daily2 instruments

Castlewood 0.3 ESD-HM-13

In a volunteer observer's own ground/0.2 mi away/1,710 ft/20 ft above here

precip, snowfall, snow depth

Rank-

CastlewoodCLWS2

At a cooperative observer's station/0.5 mi away/1,704 ft/14 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Watertown, drawn

The nearest airport reporting now, 14.6 mi from Castlewood. From its report of Sep 27, 2026, 6:53 AM local time: 3 of its 6 sheets.

The sky

Overcast at 300 ft; the ceiling is 300 ft; visibility 5 mi.

Section of the sky over Watertown, height above the station to scale: overcast cloud with its base at 300 feet, the ceiling at 300 feet, and visibility of 5 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ATYFIG. A THE SKY OVER WATERTOWNSECTION, 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 300 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 300 FTVISIBILITY, MILES: 5 MI0510TITLEWatertown, the skySTATION REPORT · ASOS ATYTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-ATY-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

62.0 F with a dew point of 62.0 F, 100 per cent relative humidity. The air is saturated at the ground; the lowest cloud reported is at 300 ft.

Chart of the air at Watertown: temperature 62.0 degrees Fahrenheit and dew point 62.0, 100 per cent relative humidity; the air saturated at the ground, against the lowest cloud reported at 300 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ATYFIG. B THE AIR AT WATERTOWNTHE 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 FSATURATED AT THE GROUNDLOWEST CLOUD REPORTED, OVC 300 FTTEMPERATURE AND DEW POINT 62.0 F, 62.0 FRELATIVE HUMIDITY 100 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 POINTTITLEWatertown, the airSTATION REPORT · ASOS ATYTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-ATY-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Watertown, 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 ATYFIG. C THE WIND AT WATERTOWNPLAN, 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 FORCE73TITLEWatertown, the windSTATION REPORT · ASOS ATYTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-ATY-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

-in

Snow on the ground

Elsewhere in South Dakota

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

Near Castlewood

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