Storm Station
Boulder, Montana
53°
Mostly clear· Feels like 53°·Gentle breeze 10 mph WNW
Mostly cloudy, with a low around 33. North northwest wind around 1 mph.
-UV
34Air quality
28%Humidity
34%Cloud

What is measuring near here

The 6 instruments nearest Boulder, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.4 miles away.

measured now4 instruments

Galena RAWSGAAM8

A remote fire weather station/5.3 mi away/6,463 ft/1,554 ft above here

temp, wind, gust, humidity, pressure

Rank207of 702

Boulder Hill I-15 MP 170.9MTBOU

Beside a road/6.4 mi away/5,607 ft/698 ft above here

temp, pavement temp, wind, visibility, precip

Rank595of 702

Helena RegionalHLN

At an airfield/26.5 mi away/3,898 ft/1,011 ft below here

temp, wind, gust, visibility, precip, pressure

Rank13of 702

Table MountainS0808

At a soil climate station/39.5 mi away/4,474 ft/435 ft below here

temp, humidity, soil temp, soil moisture

Rank-

measured daily2 instruments

Boulder 0.3 EMT-JF-1

In a volunteer observer's own ground/0.4 mi away/4,904 ft/5 ft below here

precip, snowfall, snow depth

Rank-

BoulderBOUM8

At a cooperative observer's station/0.6 mi away/4,888 ft/21 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Helena Regional, drawn

The nearest airport reporting now, 26.5 mi from Boulder. From its report of Sep 27, 2026, 1:53 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 Helena Regional, 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 HLNFIG. A THE SKY OVER HELENA REGIONALSECTION, 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 MORE0510TITLEHelena Regional, the skySTATION REPORT · ASOS HLNTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-HLN-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

40.0 F with a dew point of 24.0 F, 52 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 3,600 ft up.

Chart of the air at Helena Regional: temperature 40.0 degrees Fahrenheit and dew point 24.0, 52 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 3,600 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HLNFIG. B THE AIR AT HELENA REGIONALTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,00010 F20 F30 F40 F50 FSATURATES 3,600 FT ABOVE THE STATION, AT 20.7 FTEMPERATURE 40.0 FDEW POINT 24.0 FSPREAD 16.0 FRELATIVE HUMIDITY 52 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 POINTTITLEHelena Regional, the airSTATION REPORT · ASOS HLNTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-HLN-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Helena Regional, 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 HLNFIG. C THE WIND AT HELENA REGIONALPLAN, 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 FORCE73TITLEHelena Regional, the windSTATION REPORT · ASOS HLNTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-HLN-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Boulder (BOUM8), 0.6 miles from here, read 22 Sep, 08:00. measured daily

Elsewhere in Montana

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

Near Boulder

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