Storm Station
Green Valley, California
66°
Partly cloudy· Feels like 66°·Gentle breeze 9 mph WSW
Mostly cloudy. Low around 54, with temperatures rising to around 58 overnight. West wind around 10 mph.
-UV
43Air quality
48%Humidity
65%Cloud

What is measuring near here

The 5 instruments nearest Green Valley, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 5.5 miles away.

measured now3 instruments

Napa CountyAPC

At an airfield/7.0 mi away/26 ft/103 ft below here

temp, wind, gust, visibility, precip, pressure

Rank2,696of 3,115

Hwy 80 at West CapitolCD042

Beside a road/38.5 mi away/30 ft/99 ft below here

temp, pavement temp, wind, visibility, precip

Rank2,572of 3,115

measured daily2 instruments

Napa State HospitalNSHC1

At a cooperative observer's station/5.5 mi away/82 ft/47 ft below here

snowfall, snow depth, precip, high, low

Rank-

Napa 1.5 ESECA-NP-15

In a volunteer observer's own ground/6.2 mi away/29 ft/100 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Napa County, drawn

The nearest airport reporting now, 7.0 mi from Green Valley. From its report of Sep 27, 2026, 12:20 AM local time: 3 of its 6 sheets.

The sky

Broken at 1,100 ft; the ceiling is 1,100 ft; visibility 10 mi or more.

Section of the sky over Napa County, height above the station to scale: broken cloud with its base at 1,100 feet, the ceiling at 1,100 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT APCFIG. A THE SKY OVER NAPA COUNTYSECTION, 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 SHEETBKN 1,100 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 1,100 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLENapa County, the skySTATION REPORT · ASOS APCTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-APC-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

59.0 F with a dew point of 54.0 F, 83 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,200 ft up; the lowest cloud reported is at 1,100 ft.

Chart of the air at Napa County: temperature 59.0 degrees Fahrenheit and dew point 54.0, 83 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,200 feet above the station, against the lowest cloud reported at 1,100 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT APCFIG. B THE AIR AT NAPA COUNTYTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00040 F50 F60 F70 FSATURATES 1,200 FT ABOVE THE STATION, AT 52.8 FLOWEST CLOUD REPORTED, BKN 1,100 FTTEMPERATURE 59.0 FDEW POINT 54.0 FSPREAD 5.0 FRELATIVE HUMIDITY 83 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 POINTTITLENapa County, the airSTATION REPORT · ASOS APCTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-APC-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southwest (210 degrees) at 8 mph: force 3, a gentle breeze on the Beaufort scale.

Plan of the wind at Napa County, north up: blowing from 210 degrees, the south southwest, at 8 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT APCFIG. C THE WIND AT NAPA COUNTYPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 210°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 8 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLENapa County, the windSTATION REPORT · ASOS APCTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-APC-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Napa County, 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 Green Valley

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