Storm Station
Grayslake, Illinois
48°
Mostly clear· Feels like 48°·Light air 2 mph NE
Areas of fog before 10am. Partly sunny. High near 68, with temperatures falling to around 65 in the afternoon. North northeast wind 0 to 5 mph.
-UV
-Air quality
99%Humidity
36%Cloud

What is measuring near here

The 5 instruments nearest Grayslake, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.9 miles away.

measured now3 instruments

WaukeganUGN

At an airfield/10.2 mi away/709 ft/72 ft below here

temp, wind, gust, visibility, precip, pressure

Rank18of 417

Miller Road BridgeIMC04

Beside a road/11.3 mi away/735 ft/46 ft below here

temp, pavement temp, wind, visibility, precip

Rank410of 417

Waukegan HarborWHRI2

At a harbour/11.9 mi away/597 ft/184 ft below here

temp, wind, gust, humidity, pressure

Rank244of 417

measured daily2 instruments

Grayslake 0.7 WSWIL-LK-18

In a volunteer observer's own ground/0.9 mi away/804 ft/23 ft above here

precip, snowfall, snow depth

Rank-

Fox River AT MchenryMHYI2

At a cooperative observer's station/11.2 mi away/738 ft/43 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Waukegan, drawn

The nearest airport reporting now, 10.2 mi from Grayslake. From its report of Sep 27, 2026, 5:51 AM local time: 3 of its 6 sheets.

The sky

No cloud below 12,000 ft; visibility 4 mi.

Section of the sky over Waukegan, height above the station to scale: no cloud detected below 12,000 feet, the reach of its ceilometer, and visibility of 4 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT UGNFIG. A THE SKY OVER WAUKEGANSECTION, 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: 4 MI0510TITLEWaukegan, the skySTATION REPORT · ASOS UGNTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-UGN-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

46.0 F with a dew point of 46.0 F, 100 per cent relative humidity. The air is saturated at the ground.

Chart of the air at Waukegan: temperature 46.0 degrees Fahrenheit and dew point 46.0, 100 per cent relative humidity; the air saturated at the ground; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT UGNFIG. B THE AIR AT WAUKEGANTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00030 F40 F50 F60 FSATURATED AT THE GROUNDTEMPERATURE AND DEW POINT 46.0 F, 46.0 FRELATIVE HUMIDITY 100 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 POINTTITLEWaukegan, the airSTATION REPORT · ASOS UGNTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-UGN-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Waukegan, 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 UGNFIG. C THE WIND AT WAUKEGANPLAN, 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 FORCE73TITLEWaukegan, the windSTATION REPORT · ASOS UGNTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-UGN-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

-in

Snow on the ground

Elsewhere in Illinois

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

Near Grayslake

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