Storm Station
Allen, South Dakota
57° 61°/53°
Clear· Feels like 57°·Light breeze 5 mph NNE
Partly cloudy. Low around 53, with temperatures rising to around 56 overnight. East wind 1 to 6 mph.
0UV Low
26Air quality
85%Humidity
15%Cloud
Now
1:45 AM
57feels57
now, clear
Today
Sep 27
6153
12mph
fog
Mon
Sep 28
7561
39%
27mph
showers
Tue
Sep 29
7561
39%
overcast
Wed
Sep 30
7359
21mph
overcast
Thu
Oct 1
6247
14mph
overcast
Fri
Oct 2
7148
27mph
partly cloudy day
Sat
Oct 3
7657
11%
28mph
overcast
57°
61°53°
75°61°
75°61°
73°59°
62°47°
71°48°
76°57°

As of 1:45 AM in Allen, South Dakota.

What is measuring near here

The 5 instruments nearest Allen, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 4.8 miles away.

measured now3 instruments

Porcupine RAWSPRGS2

A remote fire weather station/17.7 mi away/3,642 ft/257 ft above here

temp, wind, gust, humidity, pressure

Rank69of 427

Sd RWIS BateslandSD505

Beside a road/21.6 mi away/3,435 ft/50 ft above here

temp, pavement temp, wind, visibility, precip

Rank414of 427

Pine RidgeIEN

At an airfield/34.3 mi away/3,310 ft/75 ft below here

temp, wind, gust, visibility, precip, pressure

Rank-

measured daily2 instruments

Martin 9.5 WSD-BN-26

In a volunteer observer's own ground/4.8 mi away/3,396 ft/11 ft above here

precip, snowfall, snow depth

Rank-

MartinMRTS2

At a cooperative observer's station/11.0 mi away/3,278 ft/107 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Porcupine RAWS, drawn

The nearest instrument reporting now, 17.7 mi from Allen. From its report of Sep 27, 2026, 12:41 AM local time: 3 of its 5 sheets.

The air

64.0 F with a dew point of 55.5 F, 74 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,000 ft up.

Chart of the air at Porcupine RAWS: temperature 64.0 degrees Fahrenheit and dew point 55.5, 74 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,000 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PRGS2FIG. B THE AIR AT PORCUPINE RAWSTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00040 F50 F60 F70 FSATURATES 2,000 FT ABOVE THE STATION, AT 53.5 FTEMPERATURE 64.0 FDEW POINT 55.5 FSPREAD 8.5 FRELATIVE HUMIDITY 74 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 POINTTITLEPorcupine RAWS, the airSTATION REPORT · DCP PRGS2TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-09-27IDSR-PRGS2-1DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east southeast (106 degrees) at 8 mph, gusting 11 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 11 mph.

Plan of the wind at Porcupine RAWS, north up: blowing from 106 degrees, the east southeast, at 8 miles an hour, gusting 11; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PRGS2FIG. C THE WIND AT PORCUPINE RAWSPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 106°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 8 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEPorcupine RAWS, the windSTATION REPORT · DCP PRGS2TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-09-27IDSR-PRGS2-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 3,642 ft above sea level, 12 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 26.19 inHg and the temperature at 46.0 F; it reports 64.0 F, 18.0 F warmer than standard.

Section from sea level of where Porcupine RAWS stands in the atmosphere, height to scale: the station 3,642 feet above sea level with 12 per cent of the air below it; the standard atmosphere's pressure there, 26.19 inches of mercury, and temperature, 46.0 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PRGS2FIG. D WHERE PORCUPINE RAWS 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 ATMOSPHEREPORCUPINE RAWS12 PER CENT OF THE AIR BELOW IT3,642 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 HERE26.19 inHgSTANDARD TEMPERATURE HERE46.0 FTEMPERATURE, REPORTED64.0 FTITLEPorcupine RAWS, the columnSTATION REPORT · DCP PRGS2TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-09-27IDSR-PRGS2-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of Porcupine RAWS, 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 Allen

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