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Shaded-relief map of Gregory, South Dakota: rivers, roads, the city limits and where the water drains.
SOUTH DAKOTA · GREGORY COUNTY

Gregory

1,270 people, 2,170 ft above sea level in Gregory County.

2,170 ftElevation, city center
1,270People, 2024 estimate
2 sq miLand area
Sunny 52°
Sunny now Dew point 31° · S 22 mph · high 45°
City of Gregory River Interstate 2 miles
Explore the plate Order a print

The Gregory 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 Gregory

NWS forecast and National Blend of Models · updated 12:00 PM CST
RIGHT NOW Bob Wiley Field Airport (KICR) · 1:53 PM
Sunny
52° Sunny Feels like 52° · high of 45° near 3 PM
WindS 22 mphno gusts
Humidity44%falling to 55% this afternoon
Pressure30.00 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 31° · Dry42° by Monday: more humid
DryComfortableStickyMuggyOppressive
NEXT RAIN
Rain
Friday70% chance · showers
LIKELY AMOUNT—amounts come within 3 days
LAST RAINNov. 40.12 in · 10 dry days
ALERTS & OUTLOOKS
No watches or warnings for Gregory County
NWS Sioux Falls and the Storm Prediction Center · checked 2:17 PM
SUN & MOON
↑ 7:29 AM5:15 PM ↓
9 h 45 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
2p
5p
8p
11p
2a
5a
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11a
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2p
5p
8p
11p
2a
5a
8a
11a
windy
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy night
mostly clear night
windy
windy
windy
clear night
windy
windy
windy
windy
windy
windy
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partly cloudy night
windy
partly cloudy night
partly cloudy night
windy
windy
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TEMPERATURE °F
44°
36°
52°
40°
55°
41°
CHANCE OF RAIN
50%
WIND, MPH
23
18
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17
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25
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HOW IT FEELS · DEW POINT
Dry: dew points 26 to 30° ↑ 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 48° / 23°
SAT Nov. 14 Partly cloudy Partly cloudy
45° 35°
0% rain — SSE 23, gusts 37 A
SUN Nov. 15 Mostly sunny; warmer Mostly sunny; warmer
55° 39°
0% rain — S 23, gusts 38 B
MON Nov. 16 Mostly sunny Mostly sunny
58° 41°
0% rain — SSW 24, gusts 38 B
TUE Nov. 17 Partly cloudy Partly cloudy
54° 42°
0% rain — S 24, gusts 39 B
WED Nov. 18 Partly cloudy Partly cloudy
57° 36°
20% rain — WNW 13, gusts 25 C
THU Nov. 19 Partly cloudy; cooler Partly cloudy; cooler
48° 36°
10% rain — ESE 8 C
FRI Nov. 20 Showers likely Showers likely
53° 37°
70% rain 0.07–1.4″ SE 15, gusts 25 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 Gregory about 5,000 feet above the ground was over Texas three days ago, and over the southern Plains a day ago, about 890 miles back along its path. Most of the nine paths traced from around the city agree. It rose from near the ground on the way. Near the ground the air came from the northern Rockies; at 10,000 feet, from the Pacific Northwest. 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

81° on Nov. 15, 2025, the hottest reading for this week of the year since 1906. Next is 80° in 1953.

80°
81°
19532025
Source: NOAA RCC-ACIS, the Gregory record since 1906.
MILE2
THE GROUND

What Gregory stands on

Gregory’s center stands about 2,170 ft above sea level. Within three miles the land runs from 2,090 ft to 2,280 ft, a difference of 190 ft: gently rolling country.

Under the town center the state geologic map shows Ogallala Group (sandstone, limestone, siltstone), from the Miocene to Pliocene, 2.6 to 23 million years old.

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

Gregory, cut in half from southwest to northeast

A section southwest to northeast, 24 miles through the town center
1,750 ft2,000 ft2,250 ft GREGORY2,170 ftHigh point of the line2,320 ftLow point1,650 ft ← SWNE →

Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 29×. 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

Ogallala Group

Sandstone, limestone, siltstone. Age: Miocene to Pliocene, 2.6 to 23 million years old. About 9 mi of the line.

Pierre Shale

Shale, bentonite. Age: Late Cretaceous, 66 to 100 million years old. About 9 mi of the line.

Eolian Deposits

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

Terrace Deposits

Coarse-detrital, clay. 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 1 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 Gregory’s rain goes

A raindrop that lands in Gregory reaches the Gulf of America by way of Ponca Creek, the Missouri and the Mississippi: about 2,120 river miles.

THE WAY DOWN, TO SCALE
Gregory≈ 2,120 mi · the Gulf of America
FROM THE CENTER OF GREGORY ≈ 2,120 mi to the Gulf of America Ponca Creek → Missouri → Mississippi

Lake on the way: 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 Gregory; river miles along the main stem, rounded.

MILE5
THE ALMANAC

Gregory’s year

1991–2020 normals · records since 1906 · Gregory

Gregory has a hot-summer humid continental climate. Summer afternoons average 86° in July; winter nights fall to about 10° in January. A normal year brings about 45 inches of snow; with the rain, that comes to about 27 inches of water.

32°10°36°13°47°23°58°33°69°45°80°56°86°62°85°59°77°50°62°36°47°23°35°14° JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 1234 TODAY GREGORY 26.7 in rain and snowmelt
Normal high to low, by month Record high to low, by day Rain by month Freezing
July, average86° / 62°high / low, the warmest month
January, average32° / 10°high / low, the coldest month
Rain and melted snow26.7 inwettest months: June and May
Snow a year45.0 insnowiest: December
Hottest on record114°FJuly 16, 1936
Coldest on record−36°FDecember 21, 1983
Wettest day on record5.21 inJuly 17, 1923
Snowiest day on record19.5 inNovember 2, 1972
90° days a year29about 3 of them 100° or more
Nights at or below 32°164and 53 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 12 (median dates)
2Highs below freezingDec. 22 to Jan. 29; normal highs stay below 32°
3Lows below freezingOct. 23 to April 13; normal lows fall below 32°
4Wettest stretchApril through June: 11.4 of the year’s 26.7 inches
NOVEMBER 14 IN THE RECORD

On November 14 Gregory normally reaches 48° and falls to 23°. The record high is 80°, in 1990; the record low −24°, in 1959. The most rain on this date, 0.26 in, fell in 2014.

MONTH BY MONTH
JanFebMarAprMayJunJulAugSepOctNovDec
Normal high32°36°47°58°69°80°86°85°77°62°47°35°
Normal low10°13°23°33°45°56°62°59°50°36°23°14°
Rain and melt, in0.550.751.343.124.134.182.993.142.412.360.950.74
Snow, inches6.88.55.35.40.00.00.00.00.01.76.910.4
Record high71° (1974)76° (1995)91° (1946)98° (1980)103° (1934)107° (1936)114° (1936)113° (1936)105° (1931)97° (1963)85° (2016)79° (1939)
Record low−31° (2018)−28° (1994)−25° (1960)−4° (1936)16° (1909)32° (1969)35° (1985)33° (1935)20° (1985)3° (2020)−24° (1959)−36° (1983)

Normals 1991–2020 and records since 1906 at Gregory, here. NOAA, through RCC-ACIS.

MILE7
ON THE NETWORK

Around Gregory on the Forecast Network

Neighboring plates

Sioux Falls SD · 137 MI 137 miles east Sioux City IA · 162 MI 162 miles east Grand Island NE · 168 MI 168 miles south Rapid City SD · 199 MI 199 miles west
FORECASTCITY
Map of Gregory, South Dakota. Explore the plate
SOUTH DAKOTA · GREGORY

Gregory

1,270 people, 2,170 ft above sea level in Gregory County.

2,170 ftElevation
1,270People
2 sq miLand
Sunny 52°
SunnyDew point 31°
1

Today in Gregory

NEXT 15 HOURS
Now windy 44° 0%
5p windy 43° 0%
8p partly cloudy night 40° 0%
11p partly cloudy night 37° 0%
2a partly cloudy night 36° 0%
5a partly cloudy night 36° 0%
Rain
NEXT RAINFriday · 70%
→
Sat0%
Partly cloudy Partly cloudy
35
45
A
Sun0%
Mostly sunny; warmer Mostly sunny; warmer
39
55
B
Mon0%
Mostly sunny Mostly sunny
41
58
B
Tue0%
Partly cloudy Partly cloudy
42
54
B
Wed20%
Partly cloudy Partly cloudy
36
57
C
Thu10%
Partly cloudy; cooler Partly cloudy; cooler
36
48
C
Fri70%
Showers likely Showers likely
37
53
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

81°, the hottest this week of the year has been since 1906.

2

What Gregory stands on

Gregory’s center stands about 2,170 ft above sea level. Within three miles the land runs from 2,090 ft to 2,280 ft, a difference of 190 ft: gently rolling country.

Gregory, southwest to northeast Gregory2,170 ft ← SWNE → 24 miles through the town center; vertical exaggeration about 55×. Colors: rock at the surface.
Elevation, center2,170 ft
Within 3 miles2,090 to 2,280 ft
Lie of the landGently rolling (190 ft of relief)
Rock at the surfaceOgallala Group
Its ageMiocene to Pliocene, 2.6 to 23 million years old
5

Gregory’s year

Gregory has a hot-summer humid continental climate. Summer afternoons average 86° in July; winter nights fall to about 10° in January. A normal year brings about 45 inches of snow; with the rain, that comes to about 27 inches of water.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 1234 26.7 in
July, average86° / 62° · high / low, the warmest month
January, average32° / 10° · high / low, the coldest month
Rain and melted snow26.7 in · wettest months: June and May
Snow a year45.0 in · snowiest: December
Hottest on record114°F · July 16, 1936
Coldest on record−36°F · December 21, 1983
Wettest day on record5.21 in · July 17, 1923
Snowiest day on record19.5 in · November 2, 1972
90° days a year29 · about 3 of them 100° or more
Nights at or below 32°164 · and 53 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 12 (median dates)
2Highs below freezing · Dec. 22 to Jan. 29; normal highs stay below 32°
3Lows below freezing · Oct. 23 to April 13; normal lows fall below 32°
4Wettest stretch · April through June: 11.4 of the year’s 26.7 inches
NOVEMBER 14 IN THE RECORD

On November 14 Gregory normally reaches 48° and falls to 23°. The record high is 80°, in 1990; the record low −24°, in 1959. The most rain on this date, 0.26 in, fell in 2014.

Normals 1991–2020 and records since 1906 at Gregory, here. NOAA, through RCC-ACIS.
3

Where the rain goes

≈ 2,120 mito the Gulf of AmericaPonca Creek → Missouri → Mississippi

A raindrop that lands in Gregory reaches the Gulf of America by way of Ponca Creek, the Missouri and the Mississippi: about 2,120 river miles.

Lake on the way: Lewis and Clark Lake.

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