Storm Station
Jefferson, South Dakota
66° 71°/66°
Overcast· Feels like 66°·Light breeze 6 mph SSE
Areas of drizzle before 4am, then areas of drizzle and patchy fog. Cloudy, with a low around 63. Southeast wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
0UV Low
40Air quality
94%Humidity
100%Cloud
Now
2:45 AM
66feels66
10%
now, overcast
Today
Sep 27
7166
13%
drizzle light
Mon
Sep 28
7065
13%
12mph
drizzle dense
Tue
Sep 29
6562
89%
13mph
showers
Wed
Sep 30
6765
48%
showers violent
Thu
Oct 1
6551
31%
17mph
overcast
Fri
Oct 2
6345
22%
clear day
Sat
Oct 3
6543
18mph
overcast
66°
71°66°
70°65°
65°62°
67°65°
65°51°
63°45°
65°43°

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

What is measuring near here

The 4 instruments nearest Jefferson, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.4 miles away.

measured now2 instruments

SD RWIS North Sioux CitySD050

Beside a road/2.7 mi away/1,112 ft/4 ft below here

temp, pavement temp, wind, visibility, precip

Rank-

VermillionVMR

At an airfield/22.0 mi away/1,145 ft/29 ft above here

temp, wind, gust, visibility, precip, pressure

Rank4of 427

measured daily2 instruments

Jefferson 0.4 NWSD-UN-22

In a volunteer observer's own ground/0.4 mi away/1,117 ft/1 ft above here

precip, snowfall, snow depth

Rank-

VermillionVRMS2

At a cooperative observer's station/21.2 mi away/1,138 ft/22 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Vermillion, drawn

The nearest airport reporting now, 22.0 mi from Jefferson. From its report of Sep 27, 2026, 2:35 AM local time: 3 of its 6 sheets.

The sky

Overcast at 900 ft; the ceiling is 900 ft; visibility 7 mi.

Section of the sky over Vermillion, height above the station to scale: overcast cloud with its base at 900 feet, the ceiling at 900 feet, and visibility of 7 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT VMRFIG. A THE SKY OVER VERMILLIONSECTION, 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: 7 MI0510TITLEVermillion, the skySTATION REPORT · ASOS VMRTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-VMR-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 Vermillion: 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 VMRFIG. B THE AIR AT VERMILLIONTHE 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 POINTTITLEVermillion, the airSTATION REPORT · ASOS VMRTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-VMR-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east southeast (110 degrees) at 6 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at Vermillion, north up: blowing from 110 degrees, the east southeast, at 6 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 VMRFIG. C THE WIND AT VERMILLIONPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 110°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 6 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEVermillion, the windSTATION REPORT · ASOS VMRTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-VMR-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Vermillion (VRMS2), 21.2 miles from here, read 26 Sep, 10:00. measured daily

Elsewhere in South Dakota

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

Near Jefferson

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