Storm Station
Coulterville, California
69°
Mostly clear· Feels like 69°·Light air 2 mph ENE
Partly cloudy. Low around 63, with temperatures rising to around 65 overnight. East wind around 5 mph.
-UV
-Air quality
41%Humidity
37%Cloud

What is measuring near here

The 5 instruments nearest Coulterville, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 4.0 miles away.

measured now3 instruments

Dudley Ranch at CoultervilleDUDC1

On a farm or research station/4.0 mi away/3,167 ft/1,466 ft above here

temp, wind, gust, humidity, pressure

Rank816of 3,120

Yosemite Village 12 W53150

At a climate reference station/20.7 mi away/6,620 ft/4,919 ft above here

temp, humidity, wind, solar, precip

Rank-

ColumbiaO22

At an airfield/25.0 mi away/2,119 ft/418 ft above here

temp, wind, gust, visibility, precip, pressure

Rank3,074of 3,120

measured daily2 instruments

Tracy CarbonaTRAC1

At a cooperative observer's station/8.5 mi away/784 ft/917 ft below here

snowfall, snow depth, precip, high, low

Rank-

Mariposa 3.7 NNWCA-MP-1

In a volunteer observer's own ground/16.5 mi away/2,942 ft/1,241 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Columbia, drawn

The nearest airport reporting now, 25.0 mi from Coulterville. From its report of Sep 27, 2026, 3:55 AM local time: 3 of its 5 sheets.

The sky

No cloud below 12,000 ft; visibility 10 mi or more.

Section of the sky over Columbia, 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 O22FIG. A THE SKY OVER COLUMBIASECTION, 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 MORE0510TITLEColumbia, the skySTATION REPORT · ASOS O22TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-09-27IDSR-O22-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

55.4 F with a dew point of 42.8 F, 62 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,900 ft up.

Chart of the air at Columbia: temperature 55.4 degrees Fahrenheit and dew point 42.8, 62 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,900 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT O22FIG. B THE AIR AT COLUMBIATHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00030 F40 F50 F60 F70 FSATURATES 2,900 FT ABOVE THE STATION, AT 40.0 FTEMPERATURE 55.4 FDEW POINT 42.8 FSPREAD 12.6 FRELATIVE HUMIDITY 62 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 POINTTITLEColumbia, the airSTATION REPORT · ASOS O22TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-09-27IDSR-O22-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The column

At 2,119 ft above sea level, 7 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 27.70 inHg and the temperature at 51.4 F; the station's altimeter setting of 29.89 inHg means its barometer reads 27.67 inHg; it reports 55.4 F, 4.0 F warmer than standard.

Section from sea level of where Columbia stands in the atmosphere, height to scale: the station 2,119 feet above sea level with 7 per cent of the air below it; the standard atmosphere's pressure there, 27.70 inches of mercury, and temperature, 51.4 degrees Fahrenheit; the altimeter setting of 29.89 and the station pressure it means, 27.67.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT O22FIG. D WHERE COLUMBIA STANDS IN THE ATMOSPHERESECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHEREFT ABOVE SEA LEVEL05,00010,00015,000SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHERECOLUMBIA7 PER CENT OF THE AIR BELOW IT2,119 FT10 PER CENT OF THE AIR BELOW, 2,890 FT20 PER CENT OF THE AIR BELOW, 6,050 FT30 PER CENT OF THE AIR BELOW, 9,540 FT40 PER CENT OF THE AIR BELOW, 13,470 FTSTANDARD PRESSURE HERE27.70 inHgSTANDARD TEMPERATURE HERE51.4 FALTIMETER SETTING, REPORTED29.89 inHgITS BAROMETER READS27.67 inHgTEMPERATURE, REPORTED55.4 FTITLEColumbia, the columnSTATION REPORT · ASOS O22TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-09-27IDSR-O22-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of Columbia, in 5 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 Coulterville

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