Storm Station
Griswold, Iowa
66°
Light rain· Feels like 66°·Light breeze 6 mph SSE
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Southeast wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
-UV
-Air quality
97%Humidity
96%Cloud

What is measuring near here

The 5 instruments nearest Griswold, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 7.8 miles away.

measured now3 instruments

AtlanticAIO

At an airfield/12.8 mi away/1,154 ft/54 ft above here

temp, wind, gust, visibility, precip, pressure

Rank651of 652

Red Oak (US 34/US 71)RROI4

Beside a road/19.4 mi away/1,060 ft/40 ft below here

temp, pavement temp, wind, visibility, precip

Rank564of 652

measured daily2 instruments

Lewis 3.7 NWIA-CS-8

In a volunteer observer's own ground/7.8 mi away/1,135 ft/35 ft above here

precip, snowfall, snow depth

Rank-

OaklandOAKI4

At a cooperative observer's station/14.1 mi away/1,188 ft/88 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Red Oak (US 34/US 71), drawn

The nearest instrument reporting now, 19.4 mi from Griswold. From its report of Sep 27, 2026, 3:15 AM local time: 3 of its 5 sheets.

The air

61.3 F with a dew point of 61.3 F, 100 per cent relative humidity. The air is saturated at the ground.

Chart of the air at Red Oak (US 34/US 71): temperature 61.3 degrees Fahrenheit and dew point 61.3, 100 per cent relative humidity; the air saturated at the ground; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT RROI4FIG. B THE AIR AT RED OAK (US 34/US 71)THE 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 FSATURATED AT THE GROUNDTEMPERATURE AND DEW POINT 61.3 F, 61.3 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 POINTTITLERed Oak (US 34/US 71), the airSTATION REPORT · RWIS RROI4TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-09-27IDSR-RROI4-1DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Red Oak (US 34/US 71), 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 RROI4FIG. C THE WIND AT RED OAK (US 34/US 71)PLAN, 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 FORCE73TITLERed Oak (US 34/US 71), the windSTATION REPORT · RWIS RROI4TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-09-27IDSR-RROI4-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 1,060 ft above sea level, 4 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.79 inHg and the temperature at 55.2 F; it reports 61.3 F, 6.1 F warmer than standard.

Section from sea level of where Red Oak (US 34/US 71) stands in the atmosphere, height to scale: the station 1,060 feet above sea level with 4 per cent of the air below it; the standard atmosphere's pressure there, 28.79 inches of mercury, and temperature, 55.2 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT RROI4FIG. D WHERE RED OAK (US 34/US 71) STANDS IN THE ATMOSPHERESECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHEREFT ABOVE SEA LEVEL05,00010,00015,000SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHERERED OAK (US 34/US 71)4 PER CENT OF THE AIR BELOW IT1,060 FT10 PER CENT OF THE AIR BELOW, 2,890 FT20 PER CENT OF THE AIR BELOW, 6,050 FT30 PER CENT OF THE AIR BELOW, 9,540 FT40 PER CENT OF THE AIR BELOW, 13,470 FTSTANDARD PRESSURE HERE28.79 inHgSTANDARD TEMPERATURE HERE55.2 FTEMPERATURE, REPORTED61.3 FTITLERed Oak (US 34/US 71), the columnSTATION REPORT · RWIS RROI4TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-09-27IDSR-RROI4-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of Red Oak (US 34/US 71), in 5 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Oakland (OAKI4), 14.1 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 Griswold

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