Storm Station
Hosmer, South Dakota
66°
Partly cloudy· Feels like 66°·Gentle breeze 8 mph ESE
Areas of fog. Mostly cloudy. Low around 54, with temperatures rising to around 61 overnight. Northeast wind 5 to 9 mph.
-UV
18Air quality
93%Humidity
63%Cloud

What is measuring near here

The 5 instruments nearest Hosmer, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.9 miles away.

measured now3 instruments

Sd RWIS RoscoeSD639

Beside a road/11.3 mi away/1,831 ft/75 ft below here

temp, pavement temp, wind, visibility, precip

Rank326of 427

Aberdeen 35WNWABNS2

At a river or reservoir gauge/19.0 mi away/1,939 ft/33 ft above here

temp, wind, gust, humidity, pressure

Rank81of 427

Aberdeen 35 WNW54933

At a climate reference station/19.4 mi away/1,957 ft/51 ft above here

temp, humidity, wind, solar, precip

Rank-

measured daily2 instruments

Eureka-15MI.SeHOES2

At a cooperative observer's station/0.9 mi away/1,877 ft/29 ft below here

snowfall, snow depth, precip, high, low

Rank-

Roscoe 6.1 WSD-ED-6

In a volunteer observer's own ground/8.7 mi away/1,857 ft/49 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Sd RWIS Roscoe, drawn

The nearest instrument reporting now, 11.3 mi from Hosmer. From its report of Sep 27, 2026, 2:06 AM local time: 3 of its 5 sheets.

The air

62.8 F with a dew point of 62.8 F, 100 per cent relative humidity. The air is saturated at the ground.

Chart of the air at Sd RWIS Roscoe: temperature 62.8 degrees Fahrenheit and dew point 62.8, 100 per cent relative humidity; the air saturated at the ground; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SD639FIG. B THE AIR AT SD RWIS ROSCOETHE 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 GROUNDTEMPERATURE AND DEW POINT 62.8 F, 62.8 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 POINTTITLESd RWIS Roscoe, the airSTATION REPORT · RWIS SD639TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-09-27IDSR-SD639-1DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the southeast (135 degrees) at 3 mph, gusting 6 mph: force 1, a light air on the Beaufort scale. The strongest gust today was 11 mph.

Plan of the wind at Sd RWIS Roscoe, north up: blowing from 135 degrees, the southeast, at 3 miles an hour, gusting 6; beside it the Beaufort scale from calm to hurricane force, force 1, light air, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SD639FIG. C THE WIND AT SD RWIS ROSCOEPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 135°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE4GUST, 6 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESd RWIS Roscoe, the windSTATION REPORT · RWIS SD639TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-09-27IDSR-SD639-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 1,831 ft above sea level, 6 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 27.99 inHg and the temperature at 52.5 F; it reports 62.8 F, 10.3 F warmer than standard.

Section from sea level of where Sd RWIS Roscoe stands in the atmosphere, height to scale: the station 1,831 feet above sea level with 6 per cent of the air below it; the standard atmosphere's pressure there, 27.99 inches of mercury, and temperature, 52.5 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SD639FIG. D WHERE SD RWIS ROSCOE STANDS IN THE ATMOSPHERESECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHEREFT ABOVE SEA LEVEL05,00010,00015,000SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHERESD RWIS ROSCOE6 PER CENT OF THE AIR BELOW IT1,831 FT10 PER CENT OF THE AIR BELOW, 2,890 FT20 PER CENT OF THE AIR BELOW, 6,050 FT30 PER CENT OF THE AIR BELOW, 9,540 FT40 PER CENT OF THE AIR BELOW, 13,470 FTSTANDARD PRESSURE HERE27.99 inHgSTANDARD TEMPERATURE HERE52.5 FTEMPERATURE, REPORTED62.8 FTITLESd RWIS Roscoe, the columnSTATION REPORT · RWIS SD639TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-09-27IDSR-SD639-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of Sd RWIS Roscoe, in 5 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 Hosmer

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