Storm Station
Egan, South Dakota
64° 70°/63°
Overcast· Feels like 64°·Light air 4 mph SE
Areas of fog and patchy drizzle. Cloudy, with a low around 60. Southeast wind 0 to 5 mph. Chance of precipitation is 20%.
0UV Low
26Air quality
97%Humidity
100%Cloud
Now
2:30 AM
64feels64
14%
now, overcast
Today
Sep 27
7063
14%
drizzle light
Mon
Sep 28
6861
16mph
drizzle light
Tue
Sep 29
6461
80%
16mph
drizzle
Wed
Sep 30
7062
29%
fog
Thu
Oct 1
6448
12%
17mph
overcast
Fri
Oct 2
6343
partly cloudy day
Sat
Oct 3
6345
21mph
overcast
64°
70°63°
68°61°
64°61°
70°62°
64°48°
63°43°
63°45°

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

What is measuring near here

The 7 instruments nearest Egan, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 3.7 miles away.

measured now5 instruments

SD RWIS WardSD077

Beside a road/12.0 mi away/1,654 ft/123 ft above here

temp, pavement temp, wind, visibility, precip

Rank-

Eros Data CenterS2072

At a soil climate station/18.0 mi away/1,551 ft/20 ft above here

temp, humidity, soil temp, soil moisture

Rank-

Sioux Falls 14 NNE04990

At a climate reference station/18.6 mi away/1,594 ft/63 ft above here

temp, humidity, wind, solar, precip

Rank-

MadisonMDS

At an airfield/21.8 mi away/1,709 ft/178 ft above here

temp, wind, gust, visibility, precip, pressure

Rank360of 427

measured daily2 instruments

Flandreau 0.5 SSWSD-MY-1

In a volunteer observer's own ground/3.7 mi away/1,558 ft/27 ft above here

precip, snowfall, snow depth

Rank-

FlandreauFLAS2

At a cooperative observer's station/4.3 mi away/1,549 ft/18 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Madison, drawn

The nearest airport reporting now, 21.8 mi from Egan. From its report of Sep 27, 2026, 2:35 AM local time: 3 of its 5 sheets.

The sky

Overcast at 200 ft; the ceiling is 200 ft; visibility 1/2 mi.

Section of the sky over Madison, height above the station to scale: overcast cloud with its base at 200 feet, the ceiling at 200 feet, and visibility of 1/2 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MDSFIG. A THE SKY OVER MADISONSECTION, 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 200 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 200 FTVISIBILITY, MILES: 1/2 MI0510TITLEMadison, the skySTATION REPORT · ASOS MDSTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-09-27IDSR-MDS-1DRAWN AS linework on paperSOURCES FB-WAT-020, FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The wind

Calm.

Plan of the wind at Madison, 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 MDSFIG. C THE WIND AT MADISONPLAN, 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 FORCE73TITLEMadison, the windSTATION REPORT · ASOS MDSTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-09-27IDSR-MDS-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The column

At 1,709 ft above sea level, 6 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.12 inHg and the temperature at 52.9 F; the station's altimeter setting of 30.01 inHg means its barometer reads 28.20 inHg; it reports 62.6 F, 9.7 F warmer than standard.

Section from sea level of where Madison stands in the atmosphere, height to scale: the station 1,709 feet above sea level with 6 per cent of the air below it; the standard atmosphere's pressure there, 28.12 inches of mercury, and temperature, 52.9 degrees Fahrenheit; the altimeter setting of 30.01 and the station pressure it means, 28.20.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MDSFIG. D WHERE MADISON 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 ATMOSPHEREMADISON6 PER CENT OF THE AIR BELOW IT1,709 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 HERE28.12 inHgSTANDARD TEMPERATURE HERE52.9 FALTIMETER SETTING, REPORTED30.01 inHgITS BAROMETER READS28.20 inHgTEMPERATURE, REPORTED62.6 FTITLEMadison, the columnSTATION REPORT · ASOS MDSTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-09-27IDSR-MDS-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of Madison, in 5 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Flandreau (FLAS2), 4.3 miles from here, read 26 Sep, 06:30. measured daily

Elsewhere in South Dakota

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

Near Egan

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