FORECAST CITY
Sign in
Shaded-relief map of Junction City, Illinois: rivers, roads, the city limits and where the water drains.
ILLINOIS · MARION COUNTY

Junction City

523 people, 490 ft above sea level in Marion County.

490 ftElevation, city center
523People, 2024 estimate
1 sq miLand area
Sunny 49°
Sunny now Dew point 25° · NW 7 mph · high 46°
City of Junction City River Interstate 2 miles
Explore the plate Order a print

The Junction City 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 Junction City

NWS forecast and National Blend of Models · updated 2:00 PM CST
RIGHT NOW Centralia Municipal Airport (KENL) · 2:35 PM
Sunny
49° Sunny Feels like 45° · high of 46° near 2 PM
WindNW 7 mphno gusts
Humidity40%falling to 49% this afternoon
Pressure30.29 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 25° · Dry38° by Tuesday: more humid
DryComfortableStickyMuggyOppressive
NEXT RAIN
Clear
Not this weeknone in the forecast for a week
LIKELY AMOUNT—nothing expected
LAST RAINNov. 60.03 in · 8 dry days
ALERTS & OUTLOOKS
No watches or warnings for Marion County
NWS St Louis and the Storm Prediction Center · checked 2:46 PM
SUN & MOON
↑ 6:37 AM4:44 PM ↓
10 h 7 m of daylight, 2 minutes less than yesterday
Waxing crescent, 25% lit. Next full moon: Nov. 24.
AIR & POLLEN
27
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
2p
5p
8p
11p
2a
5a
8a
11a
2p
5p
8p
11p
2a
5a
8a
11a
2p
5p
8p
11p
2a
5a
8a
11a
clear day
clear night
clear night
clear night
clear night
mostly clear night
mostly sunny
mostly sunny
mostly sunny
mostly clear night
clear night
clear night
clear night
mostly clear night
clear day
clear day
clear day
clear night
clear night
clear night
clear night
mostly clear night
clear day
clear day
TEMPERATURE °F
46°
27°
52°
29°
52°
30°
CHANCE OF RAIN
50%
WIND, MPH
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
HOW IT FEELS · DEW POINT
Dry: dew points 25 to 38°

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
46° 26°
0% rain — NW 0 A
SUN Nov. 15 Mostly sunny; warmer Mostly sunny; warmer
55° 27°
0% rain — NE 0 A
MON Nov. 16 Sunny Sunny
57° 29°
0% rain — ESE 0 A
TUE Nov. 17 Sunny Sunny
59° 32°
0% rain — SE 5 A
WED Nov. 18 Mostly sunny Mostly sunny
63° 41°
0% rain — SSE 7 A
THU Nov. 19 Partly cloudy Partly cloudy
67° 45°
0% rain — S 2 B
FRI Nov. 20 Mostly sunny Mostly sunny
70° 47°
0% rain — SSE 3 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 Junction City about 5,000 feet above the ground was over British Columbia three days ago, about 1,960 miles back along its path. It came down from about 10,300 feet up, warming and drying as it sank. Near the ground the air came from the Canadian Prairies; at 10,000 feet, from the northern Rockies. It has stayed over land, which is why it feels dry. 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 1993 Nov. 13–14, 1993

The wettest two days this week has seen

5.15 inches of rain fell in two days, the most for this week of the year since records began in 1915. The next wettest, 3.31 inches, fell in 1992.

3.31″
5.15″
19921993
Source: NOAA RCC-ACIS, the Salem record since 1915.
MILE2
THE GROUND

What Junction City stands on

Junction City’s center stands about 490 ft above sea level. Within three miles the land runs from 460 ft to 550 ft, a difference of 90 ft: gently rolling country.

Under the town center the state geologic map shows Bond Formation (shale, sandstone, limestone), from the Late Pennsylvanian, 304 to 307 million years old.

The section below crosses 2 rock units mapped at the surface.

Junction City, cut in half from south to north

A section south to north, 24 miles through the town center
500 ft600 ft JUNCTION CITY490 ftHigh point of the line620 ftCentral City500 ftEast Fork Kaskaskia Riverabout 450 ft ← SN →

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

Bond Formation

Shale, sandstone, limestone. Age: Late Pennsylvanian, 304 to 307 million years old. About 17 mi of the line.

Mattoon Formation

Shale. Age: Late Pennsylvanian, 304 to 307 million years old. About 8 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 Junction City’s rain goes

A raindrop that lands in Junction City reaches the Gulf of America by way of Crooked Creek, the Kaskaskia and the Mississippi: about 1,200 river miles.

THE WAY DOWN, TO SCALE
Junction City≈ 1,200 mi · the Gulf of America
FROM THE CENTER OF JUNCTION CITY ≈ 1,200 mi to the Gulf of America Crooked Creek → Kaskaskia → Mississippi

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

MILE5
THE ALMANAC

Junction City’s year

1991–2020 normals · records since 1915 · Salem, 11 mi east-northeast

Junction City has a hot-summer humid continental climate. Summer afternoons average 88° in July; winter nights fall to about 21° in January. A normal year brings about 10 inches of snow; with the rain, that comes to about 46 inches of water.

38°21°44°24°54°33°66°44°76°55°84°64°88°68°87°65°80°57°69°45°54°34°43°26° JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 TODAY 45.9 in rain and snowmelt
Normal high to low, by month Record high to low, by day Rain by month Freezing
July, average88° / 68°high / low, the warmest month
January, average38° / 21°high / low, the coldest month
Rain and melted snow45.9 inwettest months: June and May
Snow a year10.2 insnowiest: January
Hottest on record105°FJuly 8, 2012
Coldest on record−23°FJanuary 19, 1994
Wettest day on record6.36 inSeptember 9, 2018
Snowiest day on record13.5 inJanuary 31, 1982
90° days a year32very few reach 100°
Nights at or below 32°102and 23 days that stay below freezing
Climate typeHot-summer humid continentalKöppen Dfa

AROUND THE RING

1Freeze seasonfrom the first fall freeze, about Oct. 28, to the last in spring, about April 9 (median dates)
2Lows below freezingNov. 20 to March 14; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 Junction City normally reaches 55° and falls to 34°. The record high is 80°, in 1999; the record low 10°, in 1986. The most rain on this date, 4.85 in, fell in 1993.

MONTH BY MONTH
JanFebMarAprMayJunJulAugSepOctNovDec
Normal high38°44°54°66°76°84°88°87°80°69°54°43°
Normal low21°24°33°44°55°64°68°65°57°45°34°26°
Rain and melt, in3.072.563.734.694.995.084.073.803.543.443.992.93
Snow, inches3.92.50.20.00.00.00.00.00.00.10.62.9
Record high71° (1943)78° (2024)90° (2026)91° (1987)100° (1944)104° (2012)105° (2012)105° (1983)101° (2026)94° (2026)82° (2000)74° (1982)
Record low−23° (1994)−23° (1982)−8° (1978)20° (1990)31° (1976)38° (1969)48° (1968)44° (1964)33° (1974)21° (1981)2° (1959)−20° (1989)

Normals 1991–2020 and records since 1915 at Salem, 11 miles east-northeast. NOAA, through RCC-ACIS.

MILE7
ON THE NETWORK

Around Junction City on the Forecast Network

Neighboring plates

St. Louis MO · 61 MI 61 miles west Clarksville TN · 170 MI 170 miles southeast Louisville KY · 185 MI 185 miles east Louisville KY · 191 MI 191 miles east
FORECASTCITY
Map of Junction City, Illinois. Explore the plate
ILLINOIS · MARION

Junction City

523 people, 490 ft above sea level in Marion County.

490 ftElevation
523People
1 sq miLand
Sunny 49°
SunnyDew point 25°
1

Today in Junction City

NEXT 15 HOURS
Now clear day 46° 0%
5p clear night 41° 0%
8p clear night 35° 0%
11p clear night 32° 0%
2a clear night 29° 0%
5a mostly clear night 28° 0%
Clear
NEXT RAINNone this week
→
Sat0%
Sunny Sunny
26
46
A
Sun0%
Mostly sunny; warmer Mostly sunny; warmer
27
55
A
Mon0%
Sunny Sunny
29
57
A
Tue0%
Sunny Sunny
32
59
A
Wed0%
Mostly sunny Mostly sunny
41
63
A
Thu0%
Partly cloudy Partly cloudy
45
67
B
Fri0%
Mostly sunny Mostly sunny
47
70
B
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
THIS WEEK IN 1993 · NOV. 13–14, 1993

5.15 inches in two days, the most for this week since 1915.

2

What Junction City stands on

Junction City’s center stands about 490 ft above sea level. Within three miles the land runs from 460 ft to 550 ft, a difference of 90 ft: gently rolling country.

Junction City, south to north Junction City490 ftHigh point620 ftEast Fork Kaskaskia Riverabout 450 ft ← SN → 24 miles through the town center; vertical exaggeration about 122×. Colors: rock at the surface.
Elevation, center490 ft
Within 3 miles460 to 550 ft
Lie of the landGently rolling (90 ft of relief)
Rock at the surfaceBond Formation
Its ageLate Pennsylvanian, 304 to 307 million years old
5

Junction City’s year

Junction City has a hot-summer humid continental climate. Summer afternoons average 88° in July; winter nights fall to about 21° in January. A normal year brings about 10 inches of snow; with the rain, that comes to about 46 inches of water.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 45.9 in
July, average88° / 68° · high / low, the warmest month
January, average38° / 21° · high / low, the coldest month
Rain and melted snow45.9 in · wettest months: June and May
Snow a year10.2 in · snowiest: January
Hottest on record105°F · July 8, 2012
Coldest on record−23°F · January 19, 1994
Wettest day on record6.36 in · September 9, 2018
Snowiest day on record13.5 in · January 31, 1982
90° days a year32 · very few reach 100°
Nights at or below 32°102 · and 23 days that stay below freezing
Climate typeHot-summer humid continental · Köppen Dfa
1Freeze season · from the first fall freeze, about Oct. 28, to the last in spring, about April 9 (median dates)
2Lows below freezing · Nov. 20 to March 14; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 Junction City normally reaches 55° and falls to 34°. The record high is 80°, in 1999; the record low 10°, in 1986. The most rain on this date, 4.85 in, fell in 1993.

Normals 1991–2020 and records since 1915 at Salem, 11 miles east-northeast. NOAA, through RCC-ACIS.
3

Where the rain goes

≈ 1,200 mito the Gulf of AmericaCrooked Creek → Kaskaskia → Mississippi

A raindrop that lands in Junction City reaches the Gulf of America by way of Crooked Creek, the Kaskaskia and the Mississippi: about 1,200 river miles.