Storm Station
Forty Mile Colony, Montana
61°
Partly cloudy· Feels like 61°·Light breeze 7 mph N
Partly cloudy. Low around 41, with temperatures rising to around 43 overnight. Northwest wind around 1 mph.
-UV
-Air quality
46%Humidity
50%Cloud

What is measuring near here

The 5 instruments nearest Forty Mile Colony, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 9.3 miles away.

measured now3 instruments

Wolf Mountain RAWSWWMM8

A remote fire weather station/9.3 mi away/5,010 ft/1,597 ft above here

temp, wind, gust, humidity, pressure

Rank186of 702

Aberdeen Hill I-90 MP 552.3MTABR

Beside a road/17.8 mi away/4,488 ft/1,075 ft above here

temp, pavement temp, wind, visibility, precip

Rank641of 702

Big Horn County00U

At an airfield/35.0 mi away/2,999 ft/414 ft below here

temp, wind, gust, visibility, precip, pressure

Rank453of 702

measured daily2 instruments

Fort Smith 0.5 ENEMT-BH-6

In a volunteer observer's own ground/27.2 mi away/3,283 ft/130 ft below here

precip, snowfall, snow depth

Rank-

Yellowtail DamBHRM8

At a dam/28.2 mi away/3,274 ft/139 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Big Horn County, drawn

The nearest airport reporting now, 35.0 mi from Forty Mile Colony. From its report of Sep 27, 2026, 2:55 AM local time: 3 of its 6 sheets.

The sky

A few clouds at 5,000 ft; visibility 10 mi or more.

Section of the sky over Big Horn County, height above the station to scale: a few clouds cloud with its base at 5,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 00UFIG. A THE SKY OVER BIG HORN COUNTYSECTION, 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 STATION01,0002,0003,0004,0005,0006,0007,0008,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETFEW 5,000 FTA FEW CLOUDS, 1 TO 2 EIGHTHS OF THE SKYVISIBILITY, MILES: 10 MI OR MORE0510TITLEBig Horn County, the skySTATION REPORT · ASOS 00UTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-00U-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

46.4 F with a dew point of 32.0 F, 57 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 3,300 ft up; the lowest cloud reported is at 5,000 ft.

Chart of the air at Big Horn County: temperature 46.4 degrees Fahrenheit and dew point 32.0, 57 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 3,300 feet above the station, against the lowest cloud reported at 5,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 00UFIG. B THE AIR AT BIG HORN COUNTYTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,0007,00020 F30 F40 F50 F60 FSATURATES 3,300 FT ABOVE THE STATION, AT 28.9 FLOWEST CLOUD REPORTED, FEW 5,000 FTTEMPERATURE 46.4 FDEW POINT 32.0 FSPREAD 14.4 FRELATIVE HUMIDITY 57 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 Horn County, the airSTATION REPORT · ASOS 00UTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-00U-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Big Horn County, 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 00UFIG. C THE WIND AT BIG HORN COUNTYPLAN, 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 FORCE73TITLEBig Horn County, the windSTATION REPORT · ASOS 00UTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-00U-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Yellowtail Dam (BHRM8), 28.2 miles from here, read 24 Sep, 07:00. measured daily

Elsewhere in Montana

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

Near Forty Mile Colony

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