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Shaded-relief map of St. Libory, Illinois: rivers, roads, the city limits and where the water drains.
ILLINOIS · ST. CLAIR COUNTY

St. Libory

608 people, 420 ft above sea level in St. Clair County.

420 ftElevation, city center
608People, 2024 estimate
1 sq miLand area
Sunny 48°
Sunny now Dew point 26° · WNW 9 mph · high 48°
City of St. Libory River Interstate 2 miles
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The St. Libory 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 St. Libory

NWS forecast and National Blend of Models · updated 12:00 PM CST
RIGHT NOW Scott AFB/MidAmerica Airport (KBLV) · 12:55 PM
Sunny
48° Sunny Feels like 44° · high of 48° near 2 PM
WindWNW 9 mphno gusts
Humidity41%falling to 56% this afternoon
Pressure30.29 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 26° · Dry42° by Tuesday: more humid
DryComfortableStickyMuggyOppressive
NEXT RAIN
Clear
Not this weeknone in the forecast for a week
LIKELY AMOUNT—nothing expected
LAST RAINNov. 70.01 in · 7 dry days
ALERTS & OUTLOOKS
No watches or warnings for St. Clair County
NWS St Louis and the Storm Prediction Center · checked 1:46 PM
SUN & MOON
↑ 6:39 AM4:47 PM ↓
10 h 8 m of daylight, 2 minutes less than yesterday
Waxing crescent, 25% lit. Next full moon: Nov. 24.
AIR & POLLEN
32
GOODAir quality index · fine particles
Tomorrow: None, moderate. 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
1p
4p
7p
10p
1a
4a
7a
10a
1p
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7p
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4a
7a
10a
1p
4p
7p
10p
1a
4a
7a
10a
clear day
clear night
clear night
clear night
clear night
mostly clear night
mostly sunny
partly cloudy day
partly cloudy day
mostly clear night
mostly clear night
mostly clear night
mostly clear night
mostly clear night
clear day
clear day
clear day
clear night
clear night
clear night
clear night
mostly clear night
mostly sunny
clear day
TEMPERATURE °F
47°
27°
51°
28°
53°
32°
CHANCE OF RAIN
50%
WIND, MPH
3
0
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3
HOW IT FEELS · DEW POINT
Dry: dew points 27 to 34° ↑ Humid air returns More humid: 41° by Tuesday

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 80° / 62°
SAT Nov. 14 Sunny Sunny
48° 26°
0% rain — N 2 A
SUN Nov. 15 Partly cloudy; warmer Partly cloudy; warmer
56° 27°
0% rain — N 0 A
MON Nov. 16 Sunny Sunny
58° 29°
0% rain — E 0 A
TUE Nov. 17 Partly cloudy Partly cloudy
61° 31°
0% rain — SSE 5 A
WED Nov. 18 Mostly sunny Mostly sunny
64° 42°
0% rain — SSE 9 B
THU Nov. 19 Partly cloudy Partly cloudy
68° 46°
10% rain — S 6 C
FRI Nov. 20 Mostly sunny Mostly sunny
71° 48°
10% rain — SE 7 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 St. Libory about 5,000 feet above the ground was over British Columbia three days ago, and over Ontario a day ago, about 2,220 miles back along its path. Most of the nine paths traced from around the city agree. Near the ground the air came from the Canadian Prairies; at 10,000 feet, from the northern Rockies. Traced back 72 hours through NOAA’s hourly RAP analyses and the GFS beyond them, nine paths at each of three heights.

THIS WEEK IN 1959 Nov. 17, 1959

The coldest this week has been

7° on Nov. 17, 1959, the coldest reading for this week of the year since 1948. Next is 8° in 2019.

8°
7°
20191959
Source: NOAA RCC-ACIS, the Belleville Siu Research record since 1948.
MILE2
THE GROUND

What St. Libory stands on

St. Libory’s center stands about 420 ft above sea level. Within three miles the land runs from 390 ft to 440 ft, a difference of 50 ft: nearly flat ground. The highest named summit within 15 miles is Turkey Hill, about 610 ft, 12 miles northwest.

Under the town center the state geologic map shows Shelburn-Patoka Formations undivided (shale, limestone), from the Late Pennsylvanian, 304 to 307 million years old.

Coulterville to Mascoutah, cut in half

A section south to north, 24 miles through the town center
400 ft500 ft ST. LIBORY420 ftHigh point of the line540 ftKaskaskia Riverabout 390 ftMascoutah430 ft ← S · CoultervilleMascoutah · N →

Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 64×. 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

Shelburn-Patoka Formations undivided

Shale, limestone. Age: Late Pennsylvanian, 304 to 307 million years old. About 24 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 St. Libory’s rain goes

A raindrop that lands in St. Libory reaches the Gulf of America by way of Little Mud Creek, the Kaskaskia and the Mississippi: about 1,130 river miles.

THE WAY DOWN, TO SCALE
St. Libory≈ 1,130 mi · the Gulf of America
FROM THE CENTER OF ST. LIBORY ≈ 1,130 mi to the Gulf of America Little Mud Creek → Kaskaskia → Mississippi

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

MILE5
THE ALMANAC

St. Libory’s year

1991–2020 normals · records since 1948 · Belleville Siu Research, 13 mi north-northwest

St. Libory has a humid subtropical climate. Summer afternoons average 90° in July; winter nights fall to about 24° in January. A normal year brings about 11 inches of snow; with the rain, that comes to about 43 inches of water.

43°24°49°28°59°36°71°46°79°56°87°64°90°68°89°65°83°57°73°47°58°37°46°28° JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 123 TODAY ST. LIBORY 43.4 in rain and snowmelt
Normal high to low, by month Record high to low, by day Rain by month Freezing
July, average90° / 68°high / low, the warmest month
January, average43° / 24°high / low, the coldest month
Rain and melted snow43.4 inwettest months: May and April
Snow a year11.2 insnowiest: January
Hottest on record110°FJuly 14, 1954
Coldest on record−27°FJanuary 17, 1977
Wettest day on record8.15 inJune 15, 1957
Snowiest day on record14.8 inJanuary 31, 1982
90° days a year53about 2 of them 100° or more
Nights at or below 32°93and 15 days that stay below freezing
Climate typeHumid subtropicalKöppen Cfa

AROUND THE RING

1Freeze seasonfrom the first fall freeze, about Oct. 14, to the last in spring, about April 12 (median dates)
2Highs of 90° and upJune 28 to Aug. 14; normal highs reach 90°
3Lows below freezingNov. 29 to March 3; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 St. Libory normally reaches 59° and falls to 37°. The record high is 82°, in 1999; the record low 11°, in 1986. The most rain on this date, 3.23 in, fell in 1993.

MONTH BY MONTH
JanFebMarAprMayJunJulAugSepOctNovDec
Normal high43°49°59°71°79°87°90°89°83°73°58°46°
Normal low24°28°36°46°56°64°68°65°57°47°37°28°
Rain and melt, in2.562.163.444.905.054.624.033.923.353.123.602.61
Snow, inches3.43.31.00.00.00.00.00.00.00.00.62.9
Record high75° (1950)83° (2024)92° (2026)91° (2007)97° (1953)106° (2012)110° (1954)105° (2007)103° (1954)96° (2019)84° (2016)78° (2025)
Record low−27° (1977)−21° (1982)−8° (1978)18° (2007)28° (1976)38° (1972)43° (1972)39° (1986)26° (1995)19° (2024)2° (1991)−19° (1989)

Normals 1991–2020 and records since 1948 at Belleville Siu Research, 13 miles north-northwest. NOAA, through RCC-ACIS.

MILE7
ON THE NETWORK

Around St. Libory on the Forecast Network

Neighboring plates

Belleville IL · 18 MI 18 miles northwest St. Louis MO · 34 MI 34 miles northwest Springfield IL · 99 MI 99 miles north Evansville IN · 122 MI 122 miles east Columbia MO · 147 MI 147 miles west Clarksville TN · 180 MI 180 miles southeast
FORECASTCITY
Map of St. Libory, Illinois. Explore the plate
ILLINOIS · ST. CLAIR

St. Libory

608 people, 420 ft above sea level in St. Clair County.

420 ftElevation
608People
1 sq miLand
Sunny 48°
SunnyDew point 26°
1

Today in St. Libory

NEXT 15 HOURS
Now clear day 47° 0%
4p clear day 46° 0%
7p clear night 38° 0%
10p clear night 33° 0%
1a clear night 30° 0%
4a mostly clear night 28° 0%
Clear
NEXT RAINNone this week
→
Sat0%
Sunny Sunny
26
48
A
Sun0%
Partly cloudy; warmer Partly cloudy; warmer
27
56
A
Mon0%
Sunny Sunny
29
58
A
Tue0%
Partly cloudy Partly cloudy
31
61
A
Wed0%
Mostly sunny Mostly sunny
42
64
B
Thu10%
Partly cloudy Partly cloudy
46
68
C
Fri10%
Mostly sunny Mostly sunny
48
71
C
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
THIS WEEK IN 1959 · NOV. 17, 1959

7°, the coldest this week of the year has been since 1948.

2

What St. Libory stands on

St. Libory’s center stands about 420 ft above sea level. Within three miles the land runs from 390 ft to 440 ft, a difference of 50 ft: nearly flat ground. The highest named summit within 15 miles is Turkey Hill, about 610 ft, 12 miles northwest.

St. Libory, south to north St. Libory420 ftHigh point540 ftKaskaskia Riverabout 390 ft ← SN → 24 miles through the town center; vertical exaggeration about 122×. Colors: rock at the surface.
Elevation, center420 ft
Within 3 miles390 to 440 ft
Lie of the landNearly flat (50 ft of relief)
High point nearbyTurkey Hill, 610 ft, 12 mi northwest
Rock at the surfaceShelburn-Patoka Formations undivided
Its ageLate Pennsylvanian, 304 to 307 million years old
5

St. Libory’s year

St. Libory has a humid subtropical climate. Summer afternoons average 90° in July; winter nights fall to about 24° in January. A normal year brings about 11 inches of snow; with the rain, that comes to about 43 inches of water.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 123 43.4 in
July, average90° / 68° · high / low, the warmest month
January, average43° / 24° · high / low, the coldest month
Rain and melted snow43.4 in · wettest months: May and April
Snow a year11.2 in · snowiest: January
Hottest on record110°F · July 14, 1954
Coldest on record−27°F · January 17, 1977
Wettest day on record8.15 in · June 15, 1957
Snowiest day on record14.8 in · January 31, 1982
90° days a year53 · about 2 of them 100° or more
Nights at or below 32°93 · and 15 days that stay below freezing
Climate typeHumid subtropical · Köppen Cfa
1Freeze season · from the first fall freeze, about Oct. 14, to the last in spring, about April 12 (median dates)
2Highs of 90° and up · June 28 to Aug. 14; normal highs reach 90°
3Lows below freezing · Nov. 29 to March 3; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 St. Libory normally reaches 59° and falls to 37°. The record high is 82°, in 1999; the record low 11°, in 1986. The most rain on this date, 3.23 in, fell in 1993.

Normals 1991–2020 and records since 1948 at Belleville Siu Research, 13 miles north-northwest. NOAA, through RCC-ACIS.
3

Where the rain goes

≈ 1,130 mito the Gulf of AmericaLittle Mud Creek → Kaskaskia → Mississippi

A raindrop that lands in St. Libory reaches the Gulf of America by way of Little Mud Creek, the Kaskaskia and the Mississippi: about 1,130 river miles.