Storm Station
Hornbrook, California
56° 78°/54°
Overcast· Feels like 56°·Light air 2 mph NNE
Mostly cloudy. Low around 45, with temperatures rising to around 50 overnight. North wind around 5 mph.
0UV Low
34Air quality
44%Humidity
100%Cloud
Now
12:45 AM
56feels56
now, overcast
Today
Sep 27
7854
19mph
overcast
Mon
Sep 28
7851
overcast
Tue
Sep 29
8246
overcast
Wed
Sep 30
8649
clear day
Thu
Oct 1
9353
overcast
Fri
Oct 2
8660
overcast
Sat
Oct 3
9355
partly cloudy day
56°
78°54°
78°51°
82°46°
86°49°
93°53°
86°60°
93°55°

As of 12:45 AM in Hornbrook, California.

What is measuring near here

The 5 instruments nearest Hornbrook, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.6 miles away.

measured now3 instruments

HornbrookRWISCD012

Beside a road/0.6 mi away/2,277 ft/115 ft above here

temp, pavement temp, wind, visibility, precip

Rank1,921of 3,115

HornbrookHNBC1

At a river or reservoir gauge/0.7 mi away/2,320 ft/158 ft above here

temp, wind, gust, humidity, pressure

Rank181of 3,115

Montague/SiskiyouSIY

At an airfield/10.5 mi away/2,641 ft/479 ft above here

temp, wind, gust, visibility, precip, pressure

Rank7of 3,115

measured daily2 instruments

YrekaYKAC1

At a cooperative observer's station/14.9 mi away/2,700 ft/538 ft above here

snowfall, snow depth, precip, high, low

Rank-

Yreka 1.9 SSWCA-SK-23

In a volunteer observer's own ground/15.0 mi away/2,716 ft/554 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Montague/Siskiyou, drawn

The nearest airport reporting now, 10.5 mi from Hornbrook. From its report of Sep 26, 2026, 11:53 PM 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 Montague/Siskiyou, 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 SIYFIG. A THE SKY OVER MONTAGUE/SISKIYOUSECTION, 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 MORE0510TITLEMontague/Siskiyou, the skySTATION REPORT · ASOS SIYTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-SIY-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

49.0 F with a dew point of 33.0 F, 54 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 3,600 ft up.

Chart of the air at Montague/Siskiyou: temperature 49.0 degrees Fahrenheit and dew point 33.0, 54 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 3,600 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SIYFIG. B THE AIR AT MONTAGUE/SISKIYOUTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,00020 F30 F40 F50 F60 FSATURATES 3,600 FT ABOVE THE STATION, AT 29.6 FTEMPERATURE 49.0 FDEW POINT 33.0 FSPREAD 16.0 FRELATIVE HUMIDITY 54 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 POINTTITLEMontague/Siskiyou, the airSTATION REPORT · ASOS SIYTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-SIY-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Montague/Siskiyou, 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 SIYFIG. C THE WIND AT MONTAGUE/SISKIYOUPLAN, 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 FORCE73TITLEMontague/Siskiyou, the windSTATION REPORT · ASOS SIYTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-SIY-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Yreka (YKAC1), 14.9 miles from here, read 26 Sep, 08:00. measured daily

Elsewhere in California

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

Near Hornbrook

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