Storm Station
Judith Gap, Montana
43°
Partly cloudy· Feels like 37°·Gentle breeze 10 mph NNW
Partly cloudy, with a low around 35. North wind around 7 mph.
-UV
-Air quality
33%Humidity
46%Cloud

What is measuring near here

The 7 instruments nearest Judith Gap, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.1 miles away.

measured now5 instruments

Judith Gap US-191 MP 18.6MTJUD

Beside a road/0.7 mi away/4,675 ft/34 ft above here

temp, pavement temp, wind, visibility, precip

Rank641of 702

Lima1LM

At an airfield/1.8 mi away/4,602 ft/39 ft below here

temp, wind, gust, visibility, precip, pressure

Rank-

Crystal Lake SnotelCRYM8

A snow pillow on a mountain/13.8 mi away/6,050 ft/1,409 ft above here

temp, wind, gust, humidity, pressure

Rank566of 702

MoccasinS2119

At a soil climate station/27.9 mi away/4,256 ft/385 ft below here

temp, humidity, soil temp, soil moisture

Rank-

Lewistown 42 WSW04140

At a climate reference station/28.6 mi away/5,070 ft/429 ft above here

temp, humidity, wind, solar, precip

Rank-

measured daily2 instruments

Judith GapGAPM8

At a cooperative observer's station/0.1 mi away/4,639 ft/2 ft below here

snowfall, snow depth, precip, high, low

Rank-

Buffalo 1.7 EMT-FG-3

In a volunteer observer's own ground/10.1 mi away/4,271 ft/370 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Judith Gap US-191 MP 18.6, drawn

The nearest instrument reporting now, 0.7 mi from Judith Gap. From its report of Sep 27, 2026, 2:45 AM local time: 3 of its 5 sheets.

The air

38.0 F with a dew point of 18.0 F, 44 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 4,500 ft up.

Chart of the air at Judith Gap US-191 MP 18.6: temperature 38.0 degrees Fahrenheit and dew point 18.0, 44 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 4,500 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MTJUDFIG. B THE AIR AT JUDITH GAP US-191 MP 18.6THE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,0000 F10 F20 F30 F40 F50 FSATURATES 4,500 FT ABOVE THE STATION, AT 14.0 FTEMPERATURE 38.0 FDEW POINT 18.0 FSPREAD 19.9 FRELATIVE HUMIDITY 44 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 POINTTITLEJudith Gap US-191 MP 18.6, the airSTATION REPORT · RWIS MTJUDTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-09-27IDSR-MTJUD-1DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (338 degrees) at 8 mph, gusting 15 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 21 mph.

Plan of the wind at Judith Gap US-191 MP 18.6, north up: blowing from 338 degrees, the north northwest, at 8 miles an hour, gusting 15; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MTJUDFIG. C THE WIND AT JUDITH GAP US-191 MP 18.6PLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 338°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 8 MPH4MODERATE BREEZE13GUST, 15 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEJudith Gap US-191 MP 18.6, the windSTATION REPORT · RWIS MTJUDTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-09-27IDSR-MTJUD-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 4,675 ft above sea level, 16 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 25.20 inHg and the temperature at 42.3 F; it reports 38.0 F, 4.3 F colder than standard.

Section from sea level of where Judith Gap US-191 MP 18.6 stands in the atmosphere, height to scale: the station 4,675 feet above sea level with 16 per cent of the air below it; the standard atmosphere's pressure there, 25.20 inches of mercury, and temperature, 42.3 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MTJUDFIG. D WHERE JUDITH GAP US-191 MP 18.6 STANDS IN THE ATMOSPHERESECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHEREFT ABOVE SEA LEVEL05,00010,00015,000SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHEREJUDITH GAP US-191 MP 18.616 PER CENT OF THE AIR BELOW IT4,675 FT10 PER CENT OF THE AIR BELOW, 2,890 FT20 PER CENT OF THE AIR BELOW, 6,050 FT30 PER CENT OF THE AIR BELOW, 9,540 FT40 PER CENT OF THE AIR BELOW, 13,470 FTSTANDARD PRESSURE HERE25.20 inHgSTANDARD TEMPERATURE HERE42.3 FTEMPERATURE, REPORTED38.0 FTITLEJudith Gap US-191 MP 18.6, the columnSTATION REPORT · RWIS MTJUDTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-09-27IDSR-MTJUD-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of Judith Gap US-191 MP 18.6, in 5 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 Judith Gap

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