Storm Station
Lemmon, South Dakota
51° 66°/48°
Mostly clear· Feels like 51°·Gentle breeze 8 mph N
A slight chance of rain showers after 3am. Partly cloudy, with a low around 48. North wind 2 to 6 mph. Chance of precipitation is 20%.
0UV Low
25Air quality
66%Humidity
39%Cloud
Now
1:30 AM
51feels51
now, mostly clear
Today
Sep 27
6648
drizzle light
Mon
Sep 28
6753
57%
13mph
rain heavy
Tue
Sep 29
7756
37%
overcast
Wed
Sep 30
7353
19mph
overcast
Thu
Oct 1
6246
mostly clear day
Fri
Oct 2
7248
21mph
overcast
Sat
Oct 3
7256
10%
22mph
overcast
51°
66°48°
67°53°
77°56°
73°53°
62°46°
72°48°
72°56°

As of 1:30 AM in Lemmon, South Dakota.

What is measuring near here

The 4 instruments nearest Lemmon, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.3 miles away.

measured now2 instruments

SD RWIS LemmonSD038

Beside a road/2.7 mi away/2,582 ft/10 ft above here

temp, pavement temp, wind, visibility, precip

Rank-

measured daily2 instruments

LemmonLEMS2

At a cooperative observer's station/0.3 mi away/2,566 ft/6 ft below here

snowfall, snow depth, precip, high, low

Rank-

Lemmon 7.3 SSD-PK-34

In a volunteer observer's own ground/7.4 mi away/2,436 ft/136 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Grand River AT Shadehill Reservoir, drawn

The nearest instrument reporting now, 13.0 mi from Lemmon. From its report of Sep 27, 2026, 1:15 AM local time: 3 of its 3 sheets.

The column

At 2,224 ft above sea level, 8 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 27.59 inHg and the temperature at 51.1 F; it reports 60.8 F, 9.7 F warmer than standard.

Section from sea level of where Grand River AT Shadehill Reservoir stands in the atmosphere, height to scale: the station 2,224 feet above sea level with 8 per cent of the air below it; the standard atmosphere's pressure there, 27.59 inches of mercury, and temperature, 51.1 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SHAS2FIG. D WHERE GRAND RIVER AT SHADEHILL RESERVOIR 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 ATMOSPHEREGRAND RIVER AT SHADEHILL RESERVOIR8 PER CENT OF THE AIR BELOW IT2,224 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 HERE27.59 inHgSTANDARD TEMPERATURE HERE51.1 FTEMPERATURE, REPORTED60.8 FTITLEGrand River AT Shadehill Reservoir, the columnSTATION REPORT · DCP SHAS2TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 3DATE2026-09-27IDSR-SHAS2-1DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The sun

On Sep 27 the noon sun stands 42 degrees above the horizon at 45.75 N, and the day is 11 h 45 min long. Level ground there takes 67 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Grand River AT Shadehill Reservoir, angles true: on Sep 27 it stands 42 degrees above the horizon, against 68 at the June solstice, 44 at the equinoxes and 21 at the December solstice; the day is 11 h 45 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SHAS2FIG. E THE SUN AT GRAND RIVER AT SHADEHILL RESERVOIRELEVATION LOOKING WEST, SOUTH TO THE LEFT: THE NOON SUN ON THE DAY OF THE REPORT, AND AT THE SOLSTICES AND EQUINOXES; ANGLES TRUETHE STATIONJUNE SOLSTICE 68°EQUINOXES 44°DECEMBER SOLSTICE 21°SEP 27, 42°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 45 MINLEVEL GROUND TAKES 67 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 45.75 N; THE SUN'S DECLINATION -1.9°TITLEGrand River AT Shadehill Reservoir, the sunSTATION REPORT · DCP SHAS2TYPEELEVATIONSCALEANGLES TRUEREVAS REPORTED SHEET 2 of 3DATE2026-09-27IDSR-SHAS2-2DRAWN AS linework on paperSOURCES FB-ENG-007

The instrument

A data collection platform, 2,224 ft above sea level. Its report of Sep 27, 2026, 1:15 AM local time is written on the sensors that made it.

Elevation of a data collection platform, Grand River AT Shadehill Reservoir, each sensor drawn and labelled with what it read: antenna, sending by satellite, last heard sep 27, 2026, 1:15 am local time; air temperature, 60.8 f.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT SHAS2FIG. F THE INSTRUMENTELEVATION OF A DATA COLLECTION PLATFORM, EACH SENSOR WITH WHAT IT READ, SEP 27, 2026, 1:15 AM LOCAL TIMEANTENNA, SENDING BY SATELLITELAST HEARD SEP 27, 2026, 1:15 AM LOCAL TIMEAIR TEMPERATURE60.8 FPRECIPITATION GAUGE-SCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLEGrand River AT Shadehill Reservoir, the instrumentSTATION REPORT · DCP SHAS2TYPEELEVATIONSCALESCHEMATICREVAS REPORTED SHEET 3 of 3DATE2026-09-27IDSR-SHAS2-3DRAWN AS linework on paperSOURCES FB-INS-001

The full report of Grand River AT Shadehill Reservoir, in 3 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Lemmon (LEMS2), 0.3 miles from here, read 25 Sep, 17:00. measured daily

Elsewhere in South Dakota

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

Near Lemmon

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