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Shaded-relief map of Olive Branch, Illinois: rivers, roads, the city limits and where the water drains.
ILLINOIS · ALEXANDER COUNTY

Olive Branch

650 people, 340 ft above sea level in Alexander County.

340 ftElevation, city center
650People, 2024 estimate
9 sq miLand area
Clear 41°
Clear now Dew point 30° · Calm · high 42°
City of Olive Branch River Interstate 2 miles
Explore the plate Order a print

The Olive Branch 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 Olive Branch

NWS forecast and National Blend of Models · updated 5:00 PM CST
RIGHT NOW Cairo Regional Airport (KCIR) · 5:35 PM
Clear
41° Clear Feels like 41° · high of 42° near 5 PM
WindCalmno gusts
Humidity64%rising to 100% by morning
Pressure30.30 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 30° · Dry44° by Tuesday: more humid
DryComfortableStickyMuggyOppressive
NEXT RAIN
Clear
Not this weeknone in the forecast for a week
LIKELY AMOUNT—nothing expected
LAST RAIN—none in 31 days
ALERTS & OUTLOOKS
No watches or warnings for Alexander County
NWS Paducah and the Storm Prediction Center · checked 5:46 PM
SUN & MOON
↑ 6:35 AM4:48 PM ↓
10 h 13 m of daylight, 2 minutes less than yesterday
Waxing crescent, 26% lit. Next full moon: Nov. 24.
AIR & POLLEN
14
GOODAir quality index · fine particles
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
5p
8p
11p
2a
5a
8a
11a
2p
5p
8p
11p
2a
5a
8a
11a
2p
5p
8p
11p
2a
5a
8a
11a
2p
clear night
clear night
clear night
mostly clear night
mostly clear night
mostly sunny
mostly sunny
partly cloudy day
mostly clear night
mostly clear night
clear night
clear night
mostly clear night
clear day
clear day
clear day
clear night
clear night
clear night
mostly clear night
mostly clear night
mostly sunny
clear day
clear day
TEMPERATURE °F
42°
29°
56°
32°
57°
33°
CHANCE OF RAIN
50%
WIND, MPH
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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0
0
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HOW IT FEELS · DEW POINT
Dry: dew points 31 to 34° ↑ Humid air returns More humid: 40° by Tuesday

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 59° / 38°
SAT Nov. 14 Sunny Sunny
42° 28°
0% rain — NNE 0 A
SUN Nov. 15 Mostly sunny; warmer Mostly sunny; warmer
56° 29°
0% rain — NE 0 A
MON Nov. 16 Sunny Sunny
58° 30°
0% rain — NE 0 A
TUE Nov. 17 Sunny Sunny
61° 33°
0% rain — ESE 5 A
WED Nov. 18 Mostly sunny Mostly sunny
64° 39°
0% rain — SSE 5 B
THU Nov. 19 Mostly sunny Mostly sunny
67° 44°
0% rain — S 5 B
FRI Nov. 20 Mostly sunny Mostly sunny
70° 45°
0% rain — SSE 5 B
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 Olive Branch about 5,000 feet above the ground was over British Columbia three days ago, and over the central Plains a day ago, about 2,340 miles back along its path. It came down from about 9,900 feet up, warming and drying as it sank. Near the ground the air came from the open Pacific; at 10,000 feet, from the central Plains. Traced back 72 hours through NOAA’s hourly RAP analyses and the GFS beyond them, nine paths at each of three heights.

THIS WEEK, SEVEN YEARS AGO Nov. 12, 2019

The coldest this week has been

14° on Nov. 12, 2019, the coldest reading for this week of the year since 1987. Next is 16° in 1997.

16°
14°
19972019
Source: NOAA RCC-ACIS, the Cairo 3 N record since 1987.
MILE2
THE GROUND

What Olive Branch stands on

Olive Branch’s center stands about 340 ft above sea level. Within three miles the land runs from 310 ft to 590 ft, a difference of 280 ft: rolling country. The highest named summit within 15 miles is Italian Hill, about 900 ft, 11 miles north.

Under the town center the state geologic map shows Tamms Group (limestone), from the Silurian to Early Devonian, 394 to 425 million years old.

The section below crosses 6 rock units mapped at the surface.

Olive Branch, cut in half from south to north

A section south to north, 24 miles through the town center
400 ft600 ft OLIVE BRANCH340 ftMississippi Riverabout 300 ftVick Hill840 ft ← SN →

Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 41×. 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

Tamms Group

Limestone. Age: Silurian to Early Devonian, 394 to 425 million years old. About 14 mi of the line.

Clayton Formation, Porters Creek Formation, Claiborne Formation, Wilcox Formation

Shale, sandstone. Age: Paleocene to Pliocene, 2.6 to 66 million years old. About 4 mi of the line.

Holocene series

Clay, silt, sand. Age: Holocene, less than 12,000 years old. About 2 mi of the line.

Maquoketa Formation or Group

Shale, limestone. Age: Late Ordovician, 445 to 454 million years old. About 2 mi of the line.

Silurian System undivided

Dolostone, limestone. Age: Silurian, 422 to 445 million years old. About 2 mi of the line.

Kimmswick (Trenton) Limestone and Decorah Formation

Limestone, dolostone. Age: Late Ordovician, 447 to 454 million years old. About 0.5 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 Olive Branch’s rain goes

A raindrop that lands in Olive Branch reaches the Gulf of America by way of Road Run, Hogskin Creek, the Cache and the Mississippi: about 1,000 river miles.

THE WAY DOWN, TO SCALE
Olive Branch≈ 1,000 mi · the Gulf of America
FROM OLIVE BRANCH ≈ 1,000 mi to the Gulf of America Road Run → Hogskin Creek → Cache → Mississippi

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

MILE5
THE ALMANAC

Olive Branch’s year

1991–2020 normals · records since 1987 · Cairo 3 N, 13 mi southeast

Olive Branch has a humid subtropical climate. Summer afternoons average 89° in July; winter nights fall to about 26° in January. About 51 inches of rain fall in a normal year.

43°26°48°30°59°38°70°48°78°58°86°66°89°70°88°68°82°60°71°48°58°37°47°30° JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 1 TODAY OLIVE BRANCH 51.0 in rain a year
Normal high to low, by month Rain by month Freezing
July, average89° / 70°high / low, the warmest month
January, average43° / 26°high / low, the coldest month
Rain a year51.0 inwettest months: April and May
Hottest on record108°FJuly 7, 2012
Coldest on record−9°FDecember 23, 1989
Wettest day on record5.66 inOctober 18, 2007
Climate typeHumid subtropicalKöppen Cfa

AROUND THE RING

1Lows below freezingDec. 5 to Feb. 26; normal lows fall below 32°
MONTH BY MONTH
JanFebMarAprMayJunJulAugSepOctNovDec
Normal high43°48°59°70°78°86°89°88°82°71°58°47°
Normal low26°30°38°48°58°66°70°68°60°48°37°30°
Rain, inches3.803.884.855.385.084.374.103.183.514.144.464.25

Normals 1991–2020 and records since 1987 at Cairo 3 N, 13 miles southeast. NOAA, through RCC-ACIS.

MILE7
ON THE NETWORK

Around Olive Branch on the Forecast Network

Neighboring plates

Cape Girardeau MO · 14 MI 14 miles northwest Paducah KY · 40 MI 40 miles east St. Louis MO · 112 MI 112 miles northwest Clarksville TN · 119 MI 119 miles east Nashville TN · 158 MI 158 miles southeast Murfreesboro TN · 187 MI 187 miles southeast
FORECASTCITY
Map of Olive Branch, Illinois. Explore the plate
ILLINOIS · ALEXANDER

Olive Branch

650 people, 340 ft above sea level in Alexander County.

340 ftElevation
650People
9 sq miLand
Clear 41°
ClearDew point 30°
1

Today in Olive Branch

NEXT 15 HOURS
Now clear night 42° 0%
8p clear night 37° 0%
11p clear night 34° 0%
2a clear night 31° 0%
5a mostly clear night 30° 0%
8a mostly sunny 37° 0%
Clear
NEXT RAINNone this week
→
Sat0%
Sunny Sunny
28
42
A
Sun0%
Mostly sunny; warmer Mostly sunny; warmer
29
56
A
Mon0%
Sunny Sunny
30
58
A
Tue0%
Sunny Sunny
33
61
A
Wed0%
Mostly sunny Mostly sunny
39
64
B
Thu0%
Mostly sunny Mostly sunny
44
67
B
Fri0%
Mostly sunny Mostly sunny
45
70
B
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
THIS WEEK, SEVEN YEARS AGO · NOV. 12, 2019

14°, the coldest this week of the year has been since 1987.

2

What Olive Branch stands on

Olive Branch’s center stands about 340 ft above sea level. Within three miles the land runs from 310 ft to 590 ft, a difference of 280 ft: rolling country. The highest named summit within 15 miles is Italian Hill, about 900 ft, 11 miles north.

Olive Branch, south to north Olive Branch340 ftMississippi Riverabout 300 ftVick Hill840 ft ← SN → 24 miles through the town center; vertical exaggeration about 79×. Colors: rock at the surface.
Elevation, center340 ft
Within 3 miles310 to 590 ft
Lie of the landRolling (280 ft of relief)
High point nearbyItalian Hill, 900 ft, 11 mi north
Rock at the surfaceTamms Group
Its ageSilurian to Early Devonian, 394 to 425 million years old
5

Olive Branch’s year

Olive Branch has a humid subtropical climate. Summer afternoons average 89° in July; winter nights fall to about 26° in January. About 51 inches of rain fall in a normal year.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 1 51.0 in
July, average89° / 70° · high / low, the warmest month
January, average43° / 26° · high / low, the coldest month
Rain a year51.0 in · wettest months: April and May
Hottest on record108°F · July 7, 2012
Coldest on record−9°F · December 23, 1989
Wettest day on record5.66 in · October 18, 2007
Climate typeHumid subtropical · Köppen Cfa
1Lows below freezing · Dec. 5 to Feb. 26; normal lows fall below 32°
Normals 1991–2020 and records since 1987 at Cairo 3 N, 13 miles southeast. NOAA, through RCC-ACIS.
3

Where the rain goes

≈ 1,000 mito the Gulf of AmericaRoad Run → Hogskin Creek → Cache → Mississippi

A raindrop that lands in Olive Branch reaches the Gulf of America by way of Road Run, Hogskin Creek, the Cache and the Mississippi: about 1,000 river miles.