Storm Station
Erwin, South Dakota
63° 70°/62°
Fog· Feels like 63°·Light air 3 mph SSE
Areas of fog. Cloudy, with a low around 61. Southeast wind around 5 mph.
0UV Low
26Air quality
99%Humidity
100%Cloud
Now
2:30 AM
63feels63
now, fog
Today
Sep 27
7062
drizzle light
Mon
Sep 28
6860
19mph
drizzle light
Tue
Sep 29
6961
70%
18mph
drizzle light
Wed
Sep 30
7261
17%
13mph
overcast
Thu
Oct 1
6348
18mph
overcast
Fri
Oct 2
6343
16mph
overcast
Sat
Oct 3
6649
23mph
overcast
63°
70°62°
68°60°
69°61°
72°61°
63°48°
63°43°
66°49°

As of 2:30 AM in Erwin, South Dakota.

What is measuring near here

The 5 instruments nearest Erwin, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 6.8 miles away.

measured now3 instruments

Desmet6E5

At an airfield/6.8 mi away/1,726 ft/147 ft below here

temp, wind, gust, visibility, precip, pressure

Rank14of 427

Sd RWIS BryantSD599

Beside a road/8.9 mi away/1,824 ft/49 ft below here

temp, pavement temp, wind, visibility, precip

Rank344of 427

Big Sioux River 3 NW WatertownWBSS2

At a river or reservoir gauge/34.8 mi away/1,726 ft/147 ft below here

temp, wind, gust, humidity, pressure

Rank125of 427

measured daily2 instruments

Lake Preston 10.5 NNESD-KY-6

In a volunteer observer's own ground/7.6 mi away/1,797 ft/76 ft below here

precip, snowfall, snow depth

Rank-

Brookings-38MI.NwBRYS2

At a cooperative observer's station/7.9 mi away/1,847 ft/26 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Desmet, drawn

The nearest airport reporting now, 6.8 mi from Erwin. From its report of Sep 27, 2026, 2:35 AM local time: 3 of its 6 sheets.

The sky

Overcast at 400 ft; the ceiling is 400 ft; visibility 1.75 mi.

Section of the sky over Desmet, height above the station to scale: overcast cloud with its base at 400 feet, the ceiling at 400 feet, and visibility of 1.75 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 6E5FIG. A THE SKY OVER DESMETSECTION, 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 400 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 400 FTVISIBILITY, MILES: 1.75 MI0510TITLEDesmet, the skySTATION REPORT · ASOS 6E5TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-6E5-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

64.4 F with a dew point of 64.4 F, 100 per cent relative humidity. The air is saturated at the ground; the lowest cloud reported is at 400 ft.

Chart of the air at Desmet: temperature 64.4 degrees Fahrenheit and dew point 64.4, 100 per cent relative humidity; the air saturated at the ground, against the lowest cloud reported at 400 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 6E5FIG. B THE AIR AT DESMETTHE 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 F80 FSATURATED AT THE GROUNDLOWEST CLOUD REPORTED, OVC 400 FTTEMPERATURE AND DEW POINT 64.4 F, 64.4 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 POINTTITLEDesmet, the airSTATION REPORT · ASOS 6E5TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-6E5-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east northeast (70 degrees) at 3 mph: force 1, a light air on the Beaufort scale.

Plan of the wind at Desmet, north up: blowing from 70 degrees, the east northeast, at 3 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 1, light air, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 6E5FIG. C THE WIND AT DESMETPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 70°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEDesmet, the windSTATION REPORT · ASOS 6E5TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-6E5-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Desmet, 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 Erwin

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