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North Spearfish, South Dakota

Community in Lawrence County, South Dakota

Air quality

The air at North Spearfish

Index 31, good, led by ozone. Read at 2 AM from its reporting area, Rapid City (SD), 42 miles off.

31Good
  • Fine particles (PM2.5)15Good-
  • Ozone31Good-
  • Coarse particles (PM10)19Good-

The days ahead

Yesterday measured 36, good.

Smoke, the next 40 hours

No smoke near the ground through Sat 6 PM.

FriSat

Precipitation

What has fallen at North Spearfish

0.03 in in the last 24 hours, 0.09 in over the last 3 days, to Fri 1 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.03in
Last 3 days
0.09in

Visibility

How far you can see at North Spearfish, the next 40 hours

Visibility stays 10 miles or more through Sat 6 PM.

FriSat

On the radar over North Spearfish, South DakotaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest North Spearfish, 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 now4 instruments

Spearfish RAWSSFRS2

A remote fire weather station/4.7 mi away/4,253 ft/689 ft above here

temp, wind, gust, humidity, pressure

Rank384of 806

SpearfishSPF

At an airfield/5.3 mi away/3,892 ft/328 ft above here

temp, wind, gust, visibility, precip, pressure

Rank523of 806

SD RWIS SavoySD061

Beside a road/11.5 mi away/4,974 ft/1,410 ft above here

temp, pavement temp, wind, visibility, precip

Rank-

measured daily2 instruments

Spearfish 2.4 NWSD-LW-20

In a volunteer observer's own ground/0.2 mi away/3,553 ft/11 ft below here

precip, snowfall, snow depth

Rank-

SpearfishSPES2

At a cooperative observer's station/0.6 mi away/3,517 ft/47 ft below here

snowfall, snow depth, precip, high, low

Rank711of 806

Station report

The weather at Spearfish, drawn

The nearest airport reporting now, 5.3 mi from North Spearfish, South Dakota. From its report of Oct 16, 2026, 2:35 AM local time: 3 of its 6 sheets.

The sky

No cloud below 12,000 ft; visibility 10 mi or more.

Section of the sky over Spearfish, height above the station to scale: no cloud detected below 12,000 feet, the reach of its ceilometer, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SPFFIG. A THE SKY OVER SPEARFISHSECTION, 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 SHEETNO CLOUD DETECTED BELOW 12,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLESpearfish, the skySTATION REPORT · ASOS SPFTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-SPF-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

32.0 F with a dew point of 24.8 F, 74 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,600 ft up.

Chart of the air at Spearfish: temperature 32.0 degrees Fahrenheit and dew point 24.8, 74 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,600 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SPFFIG. B THE AIR AT SPEARFISHTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00010 F20 F30 F40 FSATURATES 1,600 FT ABOVE THE STATION, AT 23.2 FTEMPERATURE 32.0 FDEW POINT 24.8 FSPREAD 7.2 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 POINTTITLESpearfish, the airSTATION REPORT · ASOS SPFTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-SPF-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west (270 degrees) at 8 mph: force 3, a gentle breeze on the Beaufort scale.

Plan of the wind at Spearfish, north up: blowing from 270 degrees, the west, at 8 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SPFFIG. C THE WIND AT SPEARFISHPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 270°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 8 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESpearfish, the windSTATION REPORT · ASOS SPFTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-SPF-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Spearfish (SPES2), 0.6 miles from here, read 15 Oct, 09:13. measured daily

Elsewhere in South Dakota

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

Near North Spearfish

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

Near North Spearfish

River and lake gauges