Storm Station
Grenville, South Dakota
63° 70°/57°
Fog· Feels like 63°·Light breeze 4 mph S
Areas of fog. Mostly cloudy, with a low around 59. Southwest wind around 6 mph.
0UV Low
23Air quality
98%Humidity
100%Cloud
Now
2:45 AM
63feels63
now, fog
Today
Sep 27
7057
drizzle
Mon
Sep 28
6855
41%
21mph
drizzle light
Tue
Sep 29
7361
78%
21mph
drizzle dense
Wed
Sep 30
7659
18mph
overcast
Thu
Oct 1
6247
18mph
overcast
Fri
Oct 2
6543
18mph
overcast
Sat
Oct 3
6651
12%
24mph
overcast
63°
70°57°
68°55°
73°61°
76°59°
62°47°
65°43°
66°51°

As of 2:45 AM in Grenville, South Dakota.

What is measuring near here

The 5 instruments nearest Grenville, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.2 miles away.

measured now3 instruments

SD RWIS WaubaySD079

Beside a road/8.8 mi away/1,814 ft/51 ft below here

temp, pavement temp, wind, visibility, precip

Rank-

Marshall County RAWSMRLS2

A remote fire weather station/23.4 mi away/1,982 ft/117 ft above here

temp, wind, gust, humidity, pressure

Rank21of 427

Sisseton8D3

At an airfield/23.9 mi away/1,154 ft/711 ft below here

temp, wind, gust, visibility, precip, pressure

Rank1of 427

measured daily2 instruments

Grenville 0.1 WSWSD-DY-20

In a volunteer observer's own ground/0.2 mi away/1,860 ft/5 ft below here

precip, snowfall, snow depth

Rank-

National Wildlife RefugeWNRS2

In a park or preserve/3.7 mi away/1,801 ft/64 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Sisseton, drawn

The nearest airport reporting now, 23.9 mi from Grenville. From its report of Sep 27, 2026, 1:56 AM local time: 3 of its 5 sheets.

The air

64.0 F with a dew point of 63.0 F, 97 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 200 ft up.

Chart of the air at Sisseton: temperature 64.0 degrees Fahrenheit and dew point 63.0, 97 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 200 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 8D3FIG. B THE AIR AT SISSETONTHE 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 200 FT ABOVE THE STATION, AT 62.7 FTEMPERATURE AND DEW POINT 64.0 F, 63.0 FRELATIVE HUMIDITY 97 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 POINTTITLESisseton, the airSTATION REPORT · ASOS 8D3TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-09-27IDSR-8D3-1DRAWN 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 3 mph: force 1, a light air on the Beaufort scale.

Plan of the wind at Sisseton, north up: blowing from 160 degrees, the south southeast, 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 8D3FIG. C THE WIND AT SISSETONPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 160°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESisseton, the windSTATION REPORT · ASOS 8D3TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-09-27IDSR-8D3-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The column

At 1,154 ft above sea level, 4 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.69 inHg and the temperature at 54.9 F; the station's altimeter setting of 29.99 inHg means its barometer reads 28.76 inHg; it reports 64.0 F, 9.1 F warmer than standard.

Section from sea level of where Sisseton stands in the atmosphere, height to scale: the station 1,154 feet above sea level with 4 per cent of the air below it; the standard atmosphere's pressure there, 28.69 inches of mercury, and temperature, 54.9 degrees Fahrenheit; the altimeter setting of 29.99 and the station pressure it means, 28.76.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 8D3FIG. D WHERE SISSETON 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 ATMOSPHERESISSETON4 PER CENT OF THE AIR BELOW IT1,154 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 HERE28.69 inHgSTANDARD TEMPERATURE HERE54.9 FALTIMETER SETTING, REPORTED29.99 inHgITS BAROMETER READS28.76 inHgTEMPERATURE, REPORTED64.0 FTITLESisseton, the columnSTATION REPORT · ASOS 8D3TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-09-27IDSR-8D3-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of Sisseton, in 5 sheets, each beside the Field Book plates that explain it

-in

Snow on the ground

Elsewhere in South Dakota

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

Near Grenville

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