Storm Station
Defiance, Iowa
64° 72°/63°
Partly cloudy· Feels like 64°·Light breeze 5 mph SSE
A slight chance of showers and thunderstorms. Cloudy. Low around 62, with temperatures rising to around 64 overnight. Southeast wind around 3 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
0UV Low
-Air quality
96%Humidity
70%Cloud
Now
3:30 AM
64feels64
now, partly cloudy
Today
Sep 27
7263
fog
Mon
Sep 28
7061
drizzle light
Tue
Sep 29
6560
82%
14mph
rain light
Wed
Sep 30
6763
72%
15mph
showers
Thu
Oct 1
6550
45%
18mph
fog
Fri
Oct 2
6244
28%
clear day
Sat
Oct 3
6542
11%
15mph
overcast
64°
72°63°
70°61°
65°60°
67°63°
65°50°
62°44°
65°42°

As of 3:30 AM in Defiance, Iowa.

What is measuring near here

The 5 instruments nearest Defiance, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 4.6 miles away.

measured now3 instruments

DenisonRDNI4

Beside a road/6.1 mi away/1,398 ft/133 ft above here

temp, pavement temp, wind, visibility, precip

Rank609of 652

Irwin 3 ESEIRWI4

At a river or reservoir gauge/10.6 mi away/1,322 ft/57 ft above here

temp, wind, gust, humidity, pressure

Rank-

DenisonDNS

At an airfield/11.0 mi away/1,250 ft/15 ft below here

temp, wind, gust, visibility, precip, pressure

Rank245of 652

measured daily2 instruments

Earling 3.1 NIA-SH-5

In a volunteer observer's own ground/4.6 mi away/1,338 ft/73 ft above here

precip, snowfall, snow depth

Rank-

DenisonDNSI4

At a cooperative observer's station/14.4 mi away/1,394 ft/129 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Denison, drawn

The nearest airport reporting now, 11.0 mi from Defiance. From its report of Sep 27, 2026, 3:15 AM local time: 3 of its 6 sheets.

The sky

Overcast at 900 ft; the ceiling is 900 ft; visibility 10 mi or more.

Section of the sky over Denison, height above the station to scale: overcast cloud with its base at 900 feet, the ceiling at 900 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 900 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 900 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 900 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 900 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 900 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 (180 degrees) at 3 mph: force 1, a light air on the Beaufort scale.

Plan of the wind at Denison, north up: blowing from 180 degrees, the south, at 3 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 1, light air, 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 180°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE 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

-in

Snow on the ground

Elsewhere in Iowa

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

Near Defiance

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