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Greycliff, Montana

Community in Sweet Grass County, Montana

Air quality

The air at Greycliff

Index 42, good, led by fine particles. Read at 12 PM from its reporting area, Billings (MT), 61 miles off.

42Good
  • Fine particles (PM2.5)42Good-
  • Ozone16Good-

The days ahead

Yesterday measured 32, good.

Smoke, the next 43 hours

Little smoke near the ground through Sun 6 AM: the index from smoke stays at 11 or under.

FriSatSun

Precipitation

What has fallen at Greycliff

None in the last 3 days, to Fri 11 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.00in

Visibility

How far you can see at Greycliff, the next 43 hours

Visibility stays 10 miles or more through Sun 6 AM.

FriSatSun

On the radar over Greycliff, MontanaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Greycliff, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 8.1 miles away.

measured now4 instruments

Big Timber6S0

At an airfield/9.8 mi away/4,475 ft/539 ft above here

temp, wind, gust, visibility, precip, pressure

Rank148of 1,053

measured daily2 instruments

Big TimberBGTM8

At a cooperative observer's station/9.6 mi away/4,112 ft/176 ft above here

snowfall, snow depth, precip, high, low

Rank-

Reed Point 5 SEMT-SW-1

In a volunteer observer's own ground/16.1 mi away/3,826 ft/110 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Big Timber, drawn

The nearest airport reporting now, 9.8 mi from Greycliff, Montana. From its report of Oct 16, 2026, 12:15 PM 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 Big Timber, 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 6S0FIG. A THE SKY OVER BIG TIMBERSECTION, 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 MORE0510TITLEBig Timber, the skySTATION REPORT · ASOS 6S0TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-6S0-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

57.2 F with a dew point of 23.0 F, 26 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 7,700 ft up.

Chart of the air at Big Timber: temperature 57.2 degrees Fahrenheit and dew point 23.0, 26 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 7,700 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 6S0FIG. B THE AIR AT BIG TIMBERTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION02,0004,0006,0008,00010,00010 F20 F30 F40 F50 F60 F70 FSATURATES 7,700 FT ABOVE THE STATION, AT 16.1 FTEMPERATURE 57.2 FDEW POINT 23.0 FSPREAD 34.2 FRELATIVE HUMIDITY 26 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 POINTTITLEBig Timber, the airSTATION REPORT · ASOS 6S0TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-6S0-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west southwest (240 degrees) at 16 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 22 mph.

Plan of the wind at Big Timber, north up: blowing from 240 degrees, the west southwest, at 16 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 6S0FIG. C THE WIND AT BIG TIMBERPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 240°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 16 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEBig Timber, the windSTATION REPORT · ASOS 6S0TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-6S0-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Elsewhere in Montana

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

Near Greycliff

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

Near Greycliff

River and lake gauges