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Shaded-relief map of Platte Colony, South Dakota: rivers, roads, the city limits and where the water drains.
SOUTH DAKOTA · CHARLES MIX COUNTY

Platte Colony

299 people, 1,720 ft above sea level in Charles Mix County.

1,720 ftElevation, city center
299People, 2024 estimate
0 sq miLand area
Sunny 49°
Sunny now Dew point 32° · SE 18 mph · high 47°
City of Platte Colony River Interstate 2 miles
Explore the plate Order a print

The Platte Colony plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.

MILE1
TODAY

Today in Platte Colony

NWS forecast and National Blend of Models · updated 2:00 PM CST
RIGHT NOW Chamberlain Municipal Airport (K9V9) · 2:55 PM
Sunny
49° Sunny Feels like 43° · high of 47° near 3 PM
WindSE 18 mphgusts 23
Humidity51%rising to 79% by morning
Pressure30.06 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 32° · Dry42° by Monday: more humid
DryComfortableStickyMuggyOppressive
NEXT RAIN
Rain
Friday60% chance · showers
LIKELY AMOUNT—amounts come within 3 days
LAST RAINNov. 30.02 in · 11 dry days
ALERTS & OUTLOOKS
No watches or warnings for Charles Mix County
NWS Sioux Falls and the Storm Prediction Center · checked 3:17 PM
SUN & MOON
↑ 7:28 AM5:13 PM ↓
9 h 44 m of daylight, 2 minutes less than yesterday
Waxing crescent, 25% lit. Next full moon: Nov. 24.
AIR & POLLEN
—
Air quality index ·
No pollen source yet.

The next three days, hour by hour

Sky: clear, cloudy, night Rain likely National Blend of Models
SATURDAY, NOV. 14
SUNDAY, NOV. 15
MONDAY, NOV. 16
TUESDAY, NOV. 17
3p
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Noon
partly cloudy day
partly cloudy night
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partly cloudy night
partly cloudy night
mostly clear night
mostly sunny
mostly sunny
clear day
clear night
mostly clear night
mostly clear night
mostly clear night
clear night
mostly sunny
mostly sunny
mostly sunny
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy day
partly cloudy day
TEMPERATURE °F
47°
37°
55°
42°
58°
44°
CHANCE OF RAIN
50%
WIND, MPH
16
14
13
10
10
12
14
17
16
13
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11
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HOW IT FEELS · DEW POINT
Dry: dew points 27 to 31° ↑ Humid air returns More humid: 42° by Tuesday

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 47° / 25°
SAT Nov. 14 Partly cloudy Partly cloudy
47° 35°
0% rain — SSE 16, gusts 28 A
SUN Nov. 15 Mostly sunny; warmer Mostly sunny; warmer
58° 40°
0% rain — S 15, gusts 28 B
MON Nov. 16 Mostly sunny Mostly sunny
60° 41°
0% rain — S 13, gusts 25 B
TUE Nov. 17 Partly cloudy Partly cloudy
57° 42°
0% rain — S 14, gusts 30 B
WED Nov. 18 Partly cloudy Partly cloudy
57° 36°
20% rain — WNW 9 C
THU Nov. 19 Partly cloudy; cooler Partly cloudy; cooler
49° 36°
10% rain — ESE 3 C
FRI Nov. 20 Showers likely Showers likely
54° 37°
60% rain up to 1.2″ ESE 8 C
How sure are we? AModels agree: highs within 4° BSome spread: within 8° CWide spread: check back
Range from the National Blend of Models percentiles · graded on Forecast Scores
AIR MAIL

Where today’s air came from

The air arriving over Platte Colony about 5,000 feet above the ground was over the southern Plains three days ago, about 710 miles back along its path. Most of the nine paths traced from around the city agree. Near the ground the air came from the northern Plains; at 10,000 feet, from the Pacific Northwest. It has stayed over land, which is why it feels dry. Traced back 72 hours through NOAA’s hourly RAP analyses, nine paths at each of three heights.

THIS WEEK, ONE YEAR AGO Nov. 15, 2025

The hottest this week has been

83° on Nov. 15, 2025, the hottest reading for this week of the year since 1898. Next is 81° in 1953.

81°
83°
19532025
Source: NOAA RCC-ACIS, the Academy 2 NE record since 1898.
MILE2
THE GROUND

What Platte Colony stands on

Platte Colony’s center stands about 1,720 ft above sea level. Within three miles the land runs from 1,350 ft to 1,840 ft, a difference of 490 ft: hilly country. The highest named summit within 15 miles is Twin Butte, about 2,010 ft, 7 miles west-northwest.

Under the town center the state geologic map shows Pierre Shale (shale, bentonite), from the Late Cretaceous, 66 to 100 million years old.

The section below crosses 5 rock units mapped at the surface.

Platte Colony, cut in half from southwest to northeast

A section southwest to northeast, 24 miles through the town center
1,500 ft1,750 ft2,000 ft PLATTE COLONY1,720 ftHigh point of the line2,100 ftMissouri Riverabout 1,350 ft ← SWNE →

Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 25×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.

Rock at the surface along the line

Pierre Shale

Shale, bentonite. Age: Late Cretaceous, 66 to 100 million years old. About 18 mi of the line.

Eolian Deposits

Silt, sand. Age: Quaternary, less than 2.6 million years old. About 3 mi of the line.

Alluvium

Coarse-detrital, fine-detrital. Age: Quaternary, less than 2.6 million years old. About 0.5 mi of the line.

Ogallala Group

Sandstone, limestone, siltstone. Age: Miocene to Pliocene, 2.6 to 23 million years old. About 0.5 mi of the line.

Tertiary, undifferentiated

Fine-detrital, siltstone, conglomerate-sandstone. Age: Miocene to Pliocene, 2.6 to 23 million years old. About 0.4 mi of the line.

From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale.

Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR; rock from the USGS State Geologic Map Compilation.

MILE3
THE WATER

Where Platte Colony’s rain goes

A raindrop that lands in Platte Colony reaches the Gulf of America by way of Snake Creek, the Missouri and the Mississippi: about 2,090 river miles.

THE WAY DOWN, TO SCALE
Platte Colony≈ 2,090 mi · the Gulf of America
FROM THE CENTER OF PLATTE COLONY ≈ 2,090 mi to the Gulf of America Snake Creek → Missouri → Mississippi

Lakes on the way: Lake Francis Case and Lewis and Clark Lake.

1,170 miles of the trip are on the Mississippi.

Traced down the USGS NHDPlus V2.1 river network from the Census center point of Platte Colony; river miles along the main stem, rounded.

MILE5
THE ALMANAC

Platte Colony’s year

1991–2020 normals · records since 1898 · Academy 2 NE, 4 mi east-northeast

Platte Colony has a hot-summer humid continental climate. Summer afternoons average 87° in July; winter nights fall to about 10° in January. A normal year brings about 42 inches of snow; with the rain, that comes to about 24 inches of water.

30°10°35°14°46°24°58°35°69°47°80°58°87°63°85°60°77°51°61°37°46°25°33°15° JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 1234 TODAY 24.0 in rain and snowmelt
Normal high to low, by month Record high to low, by day Rain by month Freezing
July, average87° / 63°high / low, the warmest month
January, average30° / 10°high / low, the coldest month
Rain and melted snow24.0 inwettest months: June and May
Snow a year41.5 insnowiest: December
Hottest on record116°FJuly 24, 1940
Coldest on record−37°FJanuary 12, 1912
Wettest day on record5.55 inJuly 8, 1950
Snowiest day on record18.5 inJanuary 30, 2001
90° days a year30about 4 of them 100° or more
Nights at or below 32°167and 57 days that stay below freezing
Climate typeHot-summer humid continentalKöppen Dfa

AROUND THE RING

1Freeze seasonfrom the first fall freeze, about Oct. 7, to the last in spring, about May 7 (median dates)
2Highs below freezingDec. 18 to Feb. 7; normal highs stay below 32°
3Lows below freezingOct. 27 to April 9; normal lows fall below 32°
4Wettest stretchMay through July: 10.4 of the year’s 24.0 inches
NOVEMBER 14 IN THE RECORD

On November 14 Platte Colony normally reaches 47° and falls to 25°. The record high is 78°, in 1953; the record low −20°, in 1959. The most rain on this date, 0.80 in, fell in 1928.

MONTH BY MONTH
JanFebMarAprMayJunJulAugSepOctNovDec
Normal high30°35°46°58°69°80°87°85°77°61°46°33°
Normal low10°14°24°35°47°58°63°60°51°37°25°15°
Rain and melt, in0.510.581.122.683.533.893.032.992.541.820.800.50
Snow, inches5.87.76.56.80.00.00.00.00.01.15.48.2
Record high72° (1931)78° (1930)92° (1943)98° (1980)108° (1934)111° (1936)116° (1940)115° (1934)110° (1929)100° (1947)87° (2016)74° (1998)
Record low−37° (1912)−36° (1905)−23° (1962)−4° (1924)18° (1967)32° (1946)38° (1945)32° (1935)17° (1899)−8° (1925)−20° (1959)−31° (1917)

Normals 1991–2020 and records since 1898 at Academy 2 NE, 4 miles east-northeast. NOAA, through RCC-ACIS.

MILE7
ON THE NETWORK

Around Platte Colony on the Forecast Network

Neighboring plates

Sioux Falls SD · 120 MI 120 miles east Sioux City IA · 154 MI 154 miles southeast
FORECASTCITY
Map of Platte Colony, South Dakota. Explore the plate
SOUTH DAKOTA · CHARLES MIX

Platte Colony

299 people, 1,720 ft above sea level in Charles Mix County.

1,720 ftElevation
299People
0 sq miLand
Sunny 49°
SunnyDew point 32°
1

Today in Platte Colony

NEXT 15 HOURS
Now partly cloudy day 47° 0%
6p partly cloudy night 44° 0%
9p partly cloudy night 41° 0%
12a partly cloudy night 38° 0%
3a partly cloudy night 38° 0%
6a mostly clear night 37° 0%
Rain
NEXT RAINFriday · 60%
→
Sat0%
Partly cloudy Partly cloudy
35
47
A
Sun0%
Mostly sunny; warmer Mostly sunny; warmer
40
58
B
Mon0%
Mostly sunny Mostly sunny
41
60
B
Tue0%
Partly cloudy Partly cloudy
42
57
B
Wed20%
Partly cloudy Partly cloudy
36
57
C
Thu10%
Partly cloudy; cooler Partly cloudy; cooler
36
49
C
Fri60%
Showers likely Showers likely
37
54
C
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
THIS WEEK, ONE YEAR AGO · NOV. 15, 2025

83°, the hottest this week of the year has been since 1898.

2

What Platte Colony stands on

Platte Colony’s center stands about 1,720 ft above sea level. Within three miles the land runs from 1,350 ft to 1,840 ft, a difference of 490 ft: hilly country. The highest named summit within 15 miles is Twin Butte, about 2,010 ft, 7 miles west-northwest.

Platte Colony, southwest to northeast Platte Colony1,720 ftMissouri Riverabout 1,350 ft ← SWNE → 24 miles through the town center; vertical exaggeration about 48×. Colors: rock at the surface.
Elevation, center1,720 ft
Within 3 miles1,350 to 1,840 ft
Lie of the landHilly (490 ft of relief)
High point nearbyTwin Butte, 2,010 ft, 7 mi west-northwest
Rock at the surfacePierre Shale
Its ageLate Cretaceous, 66 to 100 million years old
5

Platte Colony’s year

Platte Colony has a hot-summer humid continental climate. Summer afternoons average 87° in July; winter nights fall to about 10° in January. A normal year brings about 42 inches of snow; with the rain, that comes to about 24 inches of water.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 1234 24.0 in
July, average87° / 63° · high / low, the warmest month
January, average30° / 10° · high / low, the coldest month
Rain and melted snow24.0 in · wettest months: June and May
Snow a year41.5 in · snowiest: December
Hottest on record116°F · July 24, 1940
Coldest on record−37°F · January 12, 1912
Wettest day on record5.55 in · July 8, 1950
Snowiest day on record18.5 in · January 30, 2001
90° days a year30 · about 4 of them 100° or more
Nights at or below 32°167 · and 57 days that stay below freezing
Climate typeHot-summer humid continental · Köppen Dfa
1Freeze season · from the first fall freeze, about Oct. 7, to the last in spring, about May 7 (median dates)
2Highs below freezing · Dec. 18 to Feb. 7; normal highs stay below 32°
3Lows below freezing · Oct. 27 to April 9; normal lows fall below 32°
4Wettest stretch · May through July: 10.4 of the year’s 24.0 inches
NOVEMBER 14 IN THE RECORD

On November 14 Platte Colony normally reaches 47° and falls to 25°. The record high is 78°, in 1953; the record low −20°, in 1959. The most rain on this date, 0.80 in, fell in 1928.

Normals 1991–2020 and records since 1898 at Academy 2 NE, 4 miles east-northeast. NOAA, through RCC-ACIS.
3

Where the rain goes

≈ 2,090 mito the Gulf of AmericaSnake Creek → Missouri → Mississippi

A raindrop that lands in Platte Colony reaches the Gulf of America by way of Snake Creek, the Missouri and the Mississippi: about 2,090 river miles.

Lakes on the way: Lake Francis Case and Lewis and Clark Lake.

1,170 miles of the trip are on the Mississippi.