Storm Station
Colfax, California
60° 74°/55°
Overcast· Feels like 60°·Light air 1 mph NNE
Mostly cloudy. Low around 55, with temperatures rising to around 58 overnight. East northeast wind around 1 mph.
0UV Low
42Air quality
38%Humidity
100%Cloud
Now
12:30 AM
60feels60
now, overcast
Today
Sep 27
7455
overcast
Mon
Sep 28
7753
clear day
Tue
Sep 29
8757
13mph
overcast
Wed
Sep 30
8960
clear day
Thu
Oct 1
9063
mostly clear day
Fri
Oct 2
9365
overcast
Sat
Oct 3
9665
mostly clear day
60°
74°55°
77°53°
87°57°
89°60°
90°63°
93°65°
96°65°

As of 12:30 AM in Colfax, California.

What is measuring near here

The 5 instruments nearest Colfax, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.5 miles away.

measured now3 instruments

Bear River - Rollins RsvrROLC1

At a reservoir/2.4 mi away/2,083 ft/345 ft below here

temp, wind, gust, humidity, pressure

Rank1,508of 3,115

Grass ValleyGOO

At an airfield/9.1 mi away/3,115 ft/687 ft above here

temp, wind, gust, visibility, precip, pressure

Rank1,807of 3,115

Hwy 80 at Blue CanyonCD025

Beside a road/18.6 mi away/5,312 ft/2,884 ft above here

temp, pavement temp, wind, visibility, precip

Rank2,576of 3,115

measured daily2 instruments

ColfaxCOFC1

At a cooperative observer's station/0.5 mi away/2,323 ft/105 ft below here

snowfall, snow depth, precip, high, low

Rank-

Colfax 3.1 SWCA-PC-11

In a volunteer observer's own ground/3.2 mi away/2,077 ft/351 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Grass Valley, drawn

The nearest airport reporting now, 9.1 mi from Colfax. From its report of Sep 27, 2026, 12:15 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 Grass Valley, 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 GOOFIG. A THE SKY OVER GRASS VALLEYSECTION, 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 MORE0510TITLEGrass Valley, the skySTATION REPORT · ASOS GOOTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-GOO-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

60.8 F with a dew point of 41.0 F, 48 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 4,500 ft up.

Chart of the air at Grass Valley: temperature 60.8 degrees Fahrenheit and dew point 41.0, 48 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 4,500 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GOOFIG. B THE AIR AT GRASS VALLEYTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,00030 F40 F50 F60 F70 FSATURATES 4,500 FT ABOVE THE STATION, AT 36.7 FTEMPERATURE 60.8 FDEW POINT 41.0 FSPREAD 19.8 FRELATIVE HUMIDITY 48 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 POINTTITLEGrass Valley, the airSTATION REPORT · ASOS GOOTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-GOO-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Grass Valley, 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 GOOFIG. C THE WIND AT GRASS VALLEYPLAN, 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 FORCE73TITLEGrass Valley, the windSTATION REPORT · ASOS GOOTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-GOO-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Grass Valley, 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 Colfax

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