Storm Station
Grand Terrace, California
84°
Partly cloudy· Feels like 82°·Light breeze 8 mph WSW
Mostly cloudy, with a low around 70. South wind 0 to 5 mph.
-UV
-Air quality
23%Humidity
45%Cloud

What is measuring near here

The 4 instruments nearest Grand Terrace, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 3.7 miles away.

measured now2 instruments

UniversityUCRC1

On a college campus/4.9 mi away/974 ft/74 ft below here

temp, wind, gust, humidity, pressure

Rank1,663of 3,118

San BernardinoSBD

At an airfield/6.4 mi away/1,158 ft/110 ft above here

temp, wind, gust, visibility, precip, pressure

Rank3,084of 3,118

measured daily2 instruments

Colton 1.9 NWCA-SR-57

In a volunteer observer's own ground/3.7 mi away/1,066 ft/18 ft above here

precip, snowfall, snow depth

Rank-

Riverside Fire STN #3REVC1

At a cooperative observer's station/6.9 mi away/850 ft/198 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at San Bernardino, drawn

The nearest airport reporting now, 6.4 mi from Grand Terrace. From its report of Sep 27, 2026, 2:00 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 San Bernardino, 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 SBDFIG. A THE SKY OVER SAN BERNARDINOSECTION, 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 MORE0510TITLESan Bernardino, the skySTATION REPORT · ASOS SBDTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-SBD-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

76.3 F with a dew point of 47.5 F, 36 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 6,600 ft up.

Chart of the air at San Bernardino: temperature 76.3 degrees Fahrenheit and dew point 47.5, 36 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 6,600 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SBDFIG. B THE AIR AT SAN BERNARDINOTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION02,0004,0006,0008,00030 F40 F50 F60 F70 F80 F90 FSATURATES 6,600 FT ABOVE THE STATION, AT 41.3 FTEMPERATURE 76.3 FDEW POINT 47.5 FSPREAD 28.8 FRELATIVE HUMIDITY 36 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 POINTTITLESan Bernardino, the airSTATION REPORT · ASOS SBDTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-SBD-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at San Bernardino, 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 SBDFIG. C THE WIND AT SAN BERNARDINOPLAN, 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 FORCE73TITLESan Bernardino, the windSTATION REPORT · ASOS SBDTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-SBD-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of San Bernardino, 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 Grand Terrace

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