Storm Station
Flat Willow Colony, Montana
49°
Mostly clear· Feels like 45°·Gentle breeze 8 mph NNW
Mostly cloudy, with a high near 61. East northeast wind 3 to 10 mph.
-UV
-Air quality
36%Humidity
34%Cloud

What is measuring near here

The 5 instruments nearest Flat Willow Colony, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 5.1 miles away.

measured now3 instruments

Beacon Hill US-87 MP 35.0MTBCH

Beside a road/17.2 mi away/4,203 ft/694 ft above here

temp, pavement temp, wind, visibility, precip

Rank595of 702

Horse Thief RAWSHORM8

A remote fire weather station/22.5 mi away/3,445 ft/64 ft below here

temp, wind, gust, humidity, pressure

Rank176of 702

GrassrangeMVH

At an airfield/22.7 mi away/4,393 ft/884 ft above here

temp, wind, gust, visibility, precip, pressure

Rank6of 702

measured daily2 instruments

Winnett 21.6 SSWMT-PT-2

In a volunteer observer's own ground/5.1 mi away/3,814 ft/305 ft above here

precip, snowfall, snow depth

Rank-

Flatwillow 4ENEFLTM8

At a cooperative observer's station/11.9 mi away/3,143 ft/366 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Grassrange, drawn

The nearest airport reporting now, 22.7 mi from Flat Willow Colony. From its report of Sep 27, 2026, 5:55 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 Grassrange, 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 MVHFIG. A THE SKY OVER GRASSRANGESECTION, 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 MORE0510TITLEGrassrange, the skySTATION REPORT · ASOS MVHTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-MVH-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

33.8 F with a dew point of 23.0 F, 64 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,400 ft up.

Chart of the air at Grassrange: temperature 33.8 degrees Fahrenheit and dew point 23.0, 64 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,400 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MVHFIG. B THE AIR AT GRASSRANGETHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00010 F20 F30 F40 FSATURATES 2,400 FT ABOVE THE STATION, AT 20.7 FTEMPERATURE 33.8 FDEW POINT 23.0 FSPREAD 10.8 FRELATIVE HUMIDITY 64 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 POINTTITLEGrassrange, the airSTATION REPORT · ASOS MVHTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-MVH-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. The strongest gust today was 12 mph.

Plan of the wind at Grassrange, 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 MVHFIG. C THE WIND AT GRASSRANGEPLAN, 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 FORCE73TITLEGrassrange, the windSTATION REPORT · ASOS MVHTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-MVH-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

-in

Snow on the ground

Elsewhere in Montana

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

Near Flat Willow Colony

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