Storm Station
Copperopolis, California
59° 78°/54°
Clear· Feels like 59°·Gentle breeze 8 mph NW
Partly cloudy. Low around 58, with temperatures rising to around 60 overnight. Northwest wind around 5 mph.
0UV Low
52Air quality
44%Humidity
0%Cloud
Now
12:45 AM
59feels59
now, clear
Today
Sep 27
7854
overcast
Mon
Sep 28
8147
13mph
UV 6
clear day
Tue
Sep 29
8956
UV 6
clear day
Wed
Sep 30
9362
UV 6
clear day
Thu
Oct 1
9665
UV 6
clear day
Fri
Oct 2
9868
UV 6
mostly clear day
Sat
Oct 3
10069
UV 6
clear day
59°
78°54°
81°47°
89°56°
93°62°
96°65°
98°68°
100°69°

As of 12:45 AM in Copperopolis, California.

What is measuring near here

The 4 instruments nearest Copperopolis, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.7 miles away.

measured now2 instruments

ColumbiaO22

At an airfield/13.8 mi away/2,119 ft/1,029 ft above here

temp, wind, gust, visibility, precip, pressure

Rank3,079of 3,115

measured daily2 instruments

Copperopolis 3.1 SCA-CV-5

In a volunteer observer's own ground/0.7 mi away/749 ft/341 ft below here

precip, snowfall, snow depth

Rank-

Sonora - New MelonesNMDC1

At a cooperative observer's station/9.5 mi away/1,159 ft/69 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Columbia, drawn

The nearest airport reporting now, 13.8 mi from Copperopolis. From its report of Sep 27, 2026, 12:35 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 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 6DATE2026-09-27IDSR-O22-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

57.2 F with a dew point of 44.6 F, 63 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 57.2 degrees Fahrenheit and dew point 44.6, 63 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 41.8 FTEMPERATURE 57.2 FDEW POINT 44.6 FSPREAD 12.6 FRELATIVE HUMIDITY 63 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 6DATE2026-09-27IDSR-O22-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Columbia, 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 O22FIG. C THE WIND AT COLUMBIAPLAN, 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 FORCE73TITLEColumbia, the windSTATION REPORT · ASOS O22TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-O22-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Sonora - New Melones (NMDC1), 9.5 miles from here, read 26 Sep, 07:25. measured daily

Elsewhere in California

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

Near Copperopolis

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