Storm Station
St. Charles, Iowa
63°
Light rain· Feels like 63°·Light breeze 6 mph SE
A chance of showers and thunderstorms before 7am, then a chance of drizzle between 7am and 11am. Cloudy, with a high near 69. Southeast wind around 6 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
-UV
-Air quality
97%Humidity
97%Cloud

What is measuring near here

The 6 instruments nearest St. Charles, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.0 miles away.

measured now4 instruments

Des Moines (I-35)RDSI4

Beside a road/16.3 mi away/735 ft/333 ft below here

temp, pavement temp, wind, visibility, precip

Rank566of 652

OsceolaI75

At an airfield/17.9 mi away/1,110 ft/42 ft above here

temp, wind, gust, visibility, precip, pressure

Rank210of 652

Des Moines 17 E54902

At a climate reference station/32.8 mi away/903 ft/165 ft below here

temp, humidity, wind, solar, precip

Rank-

measured daily2 instruments

St Charles 1.1 NWIA-MD-6

In a volunteer observer's own ground/1.0 mi away/1,054 ft/14 ft below here

precip, snowfall, snow depth

Rank-

Winterset 2 NNWWTRI4

At a cooperative observer's station/12.3 mi away/1,093 ft/25 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Osceola, drawn

The nearest airport reporting now, 17.9 mi from St. Charles. From its report of Sep 27, 2026, 5:55 AM local time: 3 of its 6 sheets.

The sky

Overcast at 200 ft; the ceiling is 200 ft; visibility 5 mi.

Section of the sky over Osceola, height above the station to scale: overcast cloud with its base at 200 feet, the ceiling at 200 feet, and visibility of 5 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT I75FIG. A THE SKY OVER OSCEOLASECTION, 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 SHEETOVC 200 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 200 FTVISIBILITY, MILES: 5 MI0510TITLEOsceola, the skySTATION REPORT · ASOS I75TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-I75-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

61.5 F with a dew point of 61.3 F, 99 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 100 ft up; the lowest cloud reported is at 200 ft.

Chart of the air at Osceola: temperature 61.5 degrees Fahrenheit and dew point 61.3, 99 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 100 feet above the station, against the lowest cloud reported at 200 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT I75FIG. B THE AIR AT OSCEOLATHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00050 F60 F70 FSATURATES 100 FT ABOVE THE STATION, AT 61.2 FLOWEST CLOUD REPORTED, OVC 200 FTTEMPERATURE AND DEW POINT 61.5 F, 61.3 FRELATIVE HUMIDITY 99 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 POINTTITLEOsceola, the airSTATION REPORT · ASOS I75TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-I75-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east southeast (110 degrees) at 5 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at Osceola, north up: blowing from 110 degrees, the east southeast, at 5 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 2, light breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT I75FIG. C THE WIND AT OSCEOLAPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 110°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 5 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEOsceola, the windSTATION REPORT · ASOS I75TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-I75-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

-in

Snow on the ground

Elsewhere in Iowa

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

Near St. Charles

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