Storm Station
Castana, Iowa
66°
Light rain· Feels like 66°·Light breeze 6 mph SSE
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Southeast wind around 3 mph. Chance of precipitation is 20%.
-UV
-Air quality
93%Humidity
84%Cloud

What is measuring near here

The 6 instruments nearest Castana, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 8.9 miles away.

measured now4 instruments

Soldier River AT PisgahPSGI4

At a river or reservoir gauge/16.6 mi away/1,083 ft/101 ft below here

temp, wind, gust, humidity, pressure

Rank33of 652

Sloan I-29RSOI4

Beside a road/17.8 mi away/1,053 ft/131 ft below here

temp, pavement temp, wind, visibility, precip

Rank573of 652

Shagbark HillsS2068

At a soil climate station/25.7 mi away/1,119 ft/65 ft below here

temp, humidity, soil temp, soil moisture

Rank-

DenisonDNS

At an airfield/27.8 mi away/1,250 ft/66 ft above here

temp, wind, gust, visibility, precip, pressure

Rank239of 652

measured daily2 instruments

Mapleton 0.2 SEIA-MN-4

In a volunteer observer's own ground/8.9 mi away/1,153 ft/31 ft below here

precip, snowfall, snow depth

Rank-

Mapleton No. 2MPTI4

At a cooperative observer's station/9.1 mi away/1,161 ft/23 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Denison, drawn

The nearest airport reporting now, 27.8 mi from Castana. From its report of Sep 27, 2026, 4:35 AM local time: 3 of its 6 sheets.

The sky

Overcast at 800 ft; the ceiling is 800 ft; visibility 10 mi or more.

Section of the sky over Denison, height above the station to scale: overcast cloud with its base at 800 feet, the ceiling at 800 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DNSFIG. A THE SKY OVER DENISONSECTION, 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 800 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 800 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEDenison, the skySTATION REPORT · ASOS DNSTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-DNS-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

66.2 F with a dew point of 66.2 F, 100 per cent relative humidity. The air is saturated at the ground; the lowest cloud reported is at 800 ft.

Chart of the air at Denison: temperature 66.2 degrees Fahrenheit and dew point 66.2, 100 per cent relative humidity; the air saturated at the ground, against the lowest cloud reported at 800 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DNSFIG. B THE AIR AT DENISONTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00060 F70 F80 FSATURATED AT THE GROUNDLOWEST CLOUD REPORTED, OVC 800 FTTEMPERATURE AND DEW POINT 66.2 F, 66.2 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 POINTTITLEDenison, the airSTATION REPORT · ASOS DNSTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-DNS-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southeast (160 degrees) at 8 mph: force 3, a gentle breeze on the Beaufort scale.

Plan of the wind at Denison, north up: blowing from 160 degrees, the south southeast, at 8 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DNSFIG. C THE WIND AT DENISONPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 160°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 8 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEDenison, the windSTATION REPORT · ASOS DNSTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-DNS-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Mapleton No. 2 (MPTI4), 9.1 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 Castana

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