Storm Station
Portland, Iowa
58°
Light rain· Feels like 58°·Light air 3 mph NNE
Showers and thunderstorms. Cloudy, with a low around 57. Southeast wind around 6 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
-UV
-Air quality
81%Humidity
96%Cloud

What is measuring near here

The 4 instruments nearest Portland, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.2 miles away.

measured now2 instruments

Mason City US18MSYI4

Beside a road/1.2 mi away/1,096 ft/18 ft above here

temp, pavement temp, wind, visibility, precip

Rank564of 652

Mason CityMCW

At an airfield/10.3 mi away/1,214 ft/136 ft above here

temp, wind, gust, visibility, precip, pressure

Rank3of 652

measured daily2 instruments

Mason City 1.0 NEIA-CG-2

In a volunteer observer's own ground/4.0 mi away/1,109 ft/31 ft above here

precip, snowfall, snow depth

Rank-

Mason CityMCWI4

At a cooperative observer's station/4.3 mi away/1,096 ft/18 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Mason City, drawn

The nearest airport reporting now, 10.3 mi from Portland. From its report of Sep 27, 2026, 2:53 AM local time: 3 of its 6 sheets.

The sky

Overcast at 1,700 ft; the ceiling is 1,700 ft; visibility 10 mi or more.

Section of the sky over Mason City, height above the station to scale: overcast cloud with its base at 1,700 feet, the ceiling at 1,700 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MCWFIG. A THE SKY OVER MASON CITYSECTION, 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 1,700 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 1,700 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEMason City, the skySTATION REPORT · ASOS MCWTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-MCW-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

58.0 F with a dew point of 55.0 F, 90 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 700 ft up; the lowest cloud reported is at 1,700 ft.

Chart of the air at Mason City: temperature 58.0 degrees Fahrenheit and dew point 55.0, 90 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 700 feet above the station, against the lowest cloud reported at 1,700 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MCWFIG. B THE AIR AT MASON CITYTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00040 F50 F60 F70 FSATURATES 700 FT ABOVE THE STATION, AT 54.2 FLOWEST CLOUD REPORTED, OVC 1,700 FTTEMPERATURE 58.0 FDEW POINT 55.0 FSPREAD 3.0 FRELATIVE HUMIDITY 90 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 POINTTITLEMason City, the airSTATION REPORT · ASOS MCWTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-MCW-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the southeast (140 degrees) at 5 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at Mason City, north up: blowing from 140 degrees, the 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 MCWFIG. C THE WIND AT MASON CITYPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 140°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 5 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEMason City, the windSTATION REPORT · ASOS MCWTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-MCW-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Mason City (MCWI4), 4.3 miles from here, read 26 Sep, 07:00. measured daily

Elsewhere in Iowa

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

Near Portland

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