Storm Station
Diablo Grande, California
65° 79°/59°
Clear· Feels like 65°·Light air 2 mph SSW
Partly cloudy. Low around 55, with temperatures rising to around 57 overnight. West southwest wind around 2 mph.
0UV Low
50Air quality
30%Humidity
3%Cloud
Now
11:30 PM
65feels65
now, clear
Today
Sep 26
7959
UV 6
partly cloudy day
Sun
Sep 27
7861
17mph
UV 6
overcast
Mon
Sep 28
8055
16mph
UV 6
clear day
Tue
Sep 29
8962
UV 6
overcast
Wed
Sep 30
9366
UV 6
clear day
Thu
Oct 1
9668
UV 6
clear day
Fri
Oct 2
9871
UV 6
mostly clear day
65°
79°59°
78°61°
80°55°
89°62°
93°66°
96°68°
98°71°

As of 11:30 PM in Diablo Grande, California.

What is measuring near here

The 4 instruments nearest Diablo Grande, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 5.3 miles away.

measured now2 instruments

Diablo GrandeDBLC1

At a river or reservoir gauge/5.3 mi away/1,867 ft/841 ft above here

temp, wind, gust, humidity, pressure

Rank385of 3,115

TracyTCY

At an airfield/22.3 mi away/185 ft/841 ft below here

temp, wind, gust, visibility, precip, pressure

Rank2,560of 3,115

measured daily2 instruments

NewmanNMNC1

At a cooperative observer's station/15.7 mi away/104 ft/922 ft below here

snowfall, snow depth, precip, high, low

Rank-

Morgan Hill 6.4 NECA-SC-48

In a volunteer observer's own ground/21.6 mi away/2,624 ft/1,598 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Tracy, drawn

The nearest airport reporting now, 22.3 mi from Diablo Grande. From its report of Sep 26, 2026, 11:15 PM local time: 3 of its 6 sheets.

The sky

Broken at 4,200 ft, overcast at 4,800 ft; the ceiling is 4,200 ft; visibility 10 mi or more.

Section of the sky over Tracy, height above the station to scale: broken cloud with its base at 4,200 feet, overcast cloud with its base at 4,800 feet, the ceiling at 4,200 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT TCYFIG. A THE SKY OVER TRACYSECTION, 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 STATION01,0002,0003,0004,0005,0006,0007,0008,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 4,800 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 4,200 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 4,200 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLETracy, the skySTATION REPORT · ASOS TCYTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-TCY-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

66.2 F with a dew point of 42.8 F, 43 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 5,300 ft up; the lowest cloud reported is at 4,200 ft.

Chart of the air at Tracy: temperature 66.2 degrees Fahrenheit and dew point 42.8, 43 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 5,300 feet above the station, against the lowest cloud reported at 4,200 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT TCYFIG. B THE AIR AT TRACYTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,0007,00030 F40 F50 F60 F70 F80 FSATURATES 5,300 FT ABOVE THE STATION, AT 37.8 FLOWEST CLOUD REPORTED, BKN 4,200 FTTEMPERATURE 66.2 FDEW POINT 42.8 FSPREAD 23.4 FRELATIVE HUMIDITY 43 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 POINTTITLETracy, the airSTATION REPORT · ASOS TCYTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-TCY-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Tracy, 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 TCYFIG. C THE WIND AT TRACYPLAN, 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 FORCE73TITLETracy, the windSTATION REPORT · ASOS TCYTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-TCY-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Tracy, 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 Diablo Grande

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