Storm Station
Mountain House, California
71°
Clear· Feels like 71°·Gentle breeze 10 mph W
Mostly cloudy. Low around 57, with temperatures rising to around 59 overnight. West southwest wind 12 to 15 mph, with gusts as high as 25 mph.
-UV
42Air quality
29%Humidity
7%Cloud

What is measuring near here

The 4 instruments nearest Mountain House, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.6 miles away.

measured now2 instruments

Byron 5SSE - Harvey BanksHOBC1

At a river or reservoir gauge/4.5 mi away/22 ft/64 ft below here

temp, wind, gust, humidity, pressure

Rank1,225of 3,115

ByronC83

At an airfield/5.7 mi away/52 ft/34 ft below here

temp, wind, gust, visibility, precip, pressure

Rank1,915of 3,115

measured daily2 instruments

Tracy Pumping PlantTRPC1

At a cooperative observer's station/2.6 mi away/56 ft/30 ft below here

snowfall, snow depth, precip, high, low

Rank-

Tracy 1.1 SSWCA-SJ-14

In a volunteer observer's own ground/6.7 mi away/78 ft/8 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Byron, drawn

The nearest airport reporting now, 5.7 mi from Mountain House. From its report of Sep 27, 2026, 12:15 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 Byron, 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 C83FIG. A THE SKY OVER BYRONSECTION, 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 MORE0510TITLEByron, the skySTATION REPORT · ASOS C83TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-C83-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

62.6 F with a dew point of 48.2 F, 59 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 3,300 ft up.

Chart of the air at Byron: temperature 62.6 degrees Fahrenheit and dew point 48.2, 59 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; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT C83FIG. B THE AIR AT BYRONTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,00030 F40 F50 F60 F70 FSATURATES 3,300 FT ABOVE THE STATION, AT 45.0 FTEMPERATURE 62.6 FDEW POINT 48.2 FSPREAD 14.4 FRELATIVE HUMIDITY 59 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 POINTTITLEByron, the airSTATION REPORT · ASOS C83TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-C83-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west southwest (240 degrees) at 21 mph: force 5, a fresh breeze on the Beaufort scale.

Plan of the wind at Byron, north up: blowing from 240 degrees, the west southwest, at 21 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 5, fresh breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT C83FIG. C THE WIND AT BYRONPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 240°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE19NOW, 21 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEByron, the windSTATION REPORT · ASOS C83TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-C83-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

-in

Snow on the ground

Elsewhere in California

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

Near Mountain House

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