Storm Station
Darby, Montana
40° 66°/37°
Mostly clear· Feels like 38°·Light air 3 mph NNW
Mostly cloudy, with a low around 36. North northwest wind around 1 mph.
0UV Low
-Air quality
48%Humidity
31%Cloud
Now
2:15 AM
40feels38
now, mostly clear
Today
Sep 27
6637
14%
overcast
Mon
Sep 28
7045
12%
overcast
Tue
Sep 29
7144
overcast
Wed
Sep 30
7050
overcast
Thu
Oct 1
7845
overcast
Fri
Oct 2
8252
overcast
Sat
Oct 3
7249
clear day
40°
66°37°
70°45°
71°44°
70°50°
78°45°
82°52°
72°49°

As of 2:15 AM in Darby, Montana.

What is measuring near here

The 4 instruments nearest Darby, 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 now2 instruments

Como Dam And RsvrHMTM8

At a dam/3.8 mi away/4,288 ft/396 ft above here

temp, wind, gust, humidity, pressure

Rank348of 702

HamiltonHRF

At an airfield/16.3 mi away/3,605 ft/287 ft below here

temp, wind, gust, visibility, precip, pressure

Rank6of 702

measured daily2 instruments

DarbyDRBM8

At a cooperative observer's station/0.4 mi away/3,885 ft/7 ft below here

snowfall, snow depth, precip, high, low

Rank-

Hamilton 10.2 SSWMT-RV-19

In a volunteer observer's own ground/6.7 mi away/4,094 ft/202 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Hamilton, drawn

The nearest airport reporting now, 16.3 mi from Darby. From its report of Sep 27, 2026, 2:15 AM local time: 3 of its 6 sheets.

The sky

A few clouds at 9,000 ft; visibility 10 mi or more.

Section of the sky over Hamilton, height above the station to scale: a few clouds cloud with its base at 9,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HRFFIG. A THE SKY OVER HAMILTONSECTION, 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 STATION02,5005,0007,50010,00012,50015,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FTFEW 9,000 FTA FEW CLOUDS, 1 TO 2 EIGHTHS OF THE SKYVISIBILITY, MILES: 10 MI OR MORE0510TITLEHamilton, the skySTATION REPORT · ASOS HRFTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-HRF-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-013, FB-SKY-014

The air

33.8 F with a dew point of 30.2 F, 86 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 800 ft up; the lowest cloud reported is at 9,000 ft.

Chart of the air at Hamilton: temperature 33.8 degrees Fahrenheit and dew point 30.2, 86 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 800 feet above the station, against the lowest cloud reported at 9,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HRFFIG. B THE AIR AT HAMILTONTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,00020 F30 F40 FSATURATES 800 FT ABOVE THE STATION, AT 29.4 FABOVE THIS SHEET: LOWEST CLOUD REPORTED, FEW 9,000 FTTEMPERATURE 33.8 FDEW POINT 30.2 FSPREAD 3.6 FRELATIVE HUMIDITY 86 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 POINTTITLEHamilton, the airSTATION REPORT · ASOS HRFTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-HRF-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the southeast (130 degrees) at 3 mph: force 1, a light air on the Beaufort scale.

Plan of the wind at Hamilton, north up: blowing from 130 degrees, the southeast, at 3 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 1, light air, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HRFFIG. C THE WIND AT HAMILTONPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 130°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEHamilton, the windSTATION REPORT · ASOS HRFTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-HRF-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Hamilton, 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 Darby

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