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

Aledo

3,522 people, 740 ft above sea level in Mercer County.

740 ftElevation, city center
3,522People, 2024 estimate
2 sq miLand area
Clear 39°
Clear now Dew point 28° · Calm · high 39°
City of Aledo River Interstate 2 miles
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The Aledo 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 Aledo

NWS forecast and National Blend of Models · updated 5:00 PM CST
RIGHT NOW Muscatine (KMUT) · 5:35 PM
Clear
39° Clear Feels like 39° · high of 39° near 5 PM
WindCalmno gusts
Humidity65%rising to 100% by morning
Pressure30.32 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 28° · Dry38° by Tuesday: more humid
DryComfortableStickyMuggyOppressive
NEXT RAIN
Showers
Friday40% chance · showers
LIKELY AMOUNT—amounts come within 3 days
LAST RAINNov. 60.03 in · 8 dry days
ALERTS & OUTLOOKS
No watches or warnings for Mercer County
NWS Quad Cities and the Storm Prediction Center · checked 5:45 PM
SUN & MOON
↑ 6:49 AM4:45 PM ↓
9 h 55 m of daylight, 2 minutes less than yesterday
Waxing crescent, 26% lit. Next full moon: Nov. 24.
AIR & POLLEN
16
GOODAir quality index · fine particles
Tomorrow: None, good. 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 cloudy night
partly cloudy day
mostly sunny
clear day
clear night
mostly clear night
clear night
clear night
mostly clear night
clear day
mostly sunny
partly cloudy day
clear night
clear night
clear night
clear night
mostly clear night
mostly sunny
clear day
clear day
TEMPERATURE °F
39°
27°
49°
30°
53°
35°
CHANCE OF RAIN
50%
WIND, MPH
0
0
0
0
0
0
0
0
0
0
0
0
0
0
8
8
6
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3
3
5
8
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12
HOW IT FEELS · DEW POINT
Dry: dew points 26 to 38°

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 50° / 30°
SAT Nov. 14 Sunny Sunny
39° 26°
0% rain — WNW 0 A
SUN Nov. 15 Mostly sunny; warmer Mostly sunny; warmer
50° 28°
0% rain — NNW 0 A
MON Nov. 16 Mostly sunny Mostly sunny
54° 33°
0% rain — SSW 5 A
TUE Nov. 17 Mostly sunny Mostly sunny
57° 38°
0% rain — SSE 8 A
WED Nov. 18 Partly cloudy Partly cloudy
59° 47°
20% rain — S 12 B
THU Nov. 19 Mostly sunny Mostly sunny
62° 44°
20% rain — W 5 C
FRI Nov. 20 Chance of showers Chance of showers
63° 51°
40% rain up to 0.2″ SSE 9 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 Aledo about 5,000 feet above the ground was over the Canadian Prairies three days ago, and over the central Plains a day ago, about 1,290 miles back along its path. Most of the nine paths traced from around the city agree. Near the ground the air came from British Columbia; 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 2015 Nov. 17–18, 2015

The wettest two days this week has seen

3.42 inches of rain fell in two days, the most for this week of the year since records began in 1900. The next wettest, 2.98 inches, fell in 1928.

2.98″
3.42″
19282015
Source: NOAA RCC-ACIS, the Aledo record since 1900.
MILE2
THE GROUND

What Aledo stands on

Aledo’s center stands about 740 ft above sea level. Within three miles the land runs from 610 ft to 760 ft, a difference of 150 ft: gently rolling country.

The section below crosses 3 rock units mapped at the surface.

Keithsburg to Preemption, cut in half

A section southwest to northeast, 24 miles through the town center
600 ft700 ft800 ft ALEDO740 ftLow point560 ftPope Creekabout 590 ftEdwards Riverabout 620 ftHigh point of the line800 ft ← SW · KeithsburgPreemption · NE →

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

Tradewater Formation

Shale, sandstone. Age: Early Pennsylvanian to Middle Pennsylvanian, 307 to 324 million years old. About 17 mi of the line.

Muscatatuck Group

Limestone. Age: Middle Devonian, 384 to 394 million years old. About 4 mi of the line.

New Albany Shale, Blocher Shale, Sylamore Sandstone, Selmier Shale, Sweetland Creek Shale, Grassy Creek Shale, Saverton Shale, and Louisiana Limestone

Shale. Age: Middle Devonian to Late Devonian, 359 to 388 million years old. About 3 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 Aledo’s rain goes

A raindrop that lands in Aledo reaches the Gulf of America by way of Pike Run, Pope Creek and the Mississippi: about 1,420 river miles.

THE WAY DOWN, TO SCALE
Aledo≈ 1,420 mi · the Gulf of America
FROM THE CENTER OF ALEDO ≈ 1,420 mi to the Gulf of America Pike Run → Pope Creek → Mississippi

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

MILE5
THE ALMANAC

Aledo’s year

1991–2020 normals · records since 1900 · Aledo

Aledo has a hot-summer humid continental climate. Summer afternoons average 85° in July; winter nights fall to about 13° in January. A normal year brings about 22 inches of snow; with the rain, that comes to about 39 inches of water.

31°13°36°17°49°27°62°38°73°50°82°60°85°64°83°62°77°53°64°41°49°30°36°20° JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 1234 TODAY ALEDO 39.1 in rain and snowmelt
Normal high to low, by month Record high to low, by day Rain by month Freezing
July, average85° / 64°high / low, the warmest month
January, average31° / 13°high / low, the coldest month
Rain and melted snow39.1 inwettest months: June and May
Snow a year21.8 insnowiest: January
Hottest on record113°FJuly 15, 1936
Coldest on record−33°FJanuary 31, 2019
Wettest day on record6.90 inAugust 17, 1930
Snowiest day on record14.0 inJanuary 3, 1971
90° days a year14very few reach 100°
Nights at or below 32°140and 47 days that stay below freezing
Climate typeHot-summer humid continentalKöppen Dfa

AROUND THE RING

1Freeze seasonfrom the first fall freeze, about Oct. 17, to the last in spring, about April 19 (median dates)
2Highs below freezingDec. 30 to Feb. 5; normal highs stay below 32°
3Lows below freezingNov. 8 to March 31; normal lows fall below 32°
4Wettest stretchApril through June: 14.4 of the year’s 39.1 inches
NOVEMBER 14 IN THE RECORD

On November 14 Aledo normally reaches 50° and falls to 30°. The record high is 74°, in 1971; the record low 6°, in 1940. The most rain on this date, 1.24 in, fell in 1926.

MONTH BY MONTH
JanFebMarAprMayJunJulAugSepOctNovDec
Normal high31°36°49°62°73°82°85°83°77°64°49°36°
Normal low13°17°27°38°50°60°64°62°53°41°30°20°
Rain and melt, in1.671.852.524.005.065.373.863.893.732.822.322.01
Snow, inches6.26.23.00.60.00.00.00.00.00.31.44.1
Record high69° (1989)77° (2024)94° (1928)93° (1930)103° (1934)104° (1936)113° (1936)106° (1936)102° (1953)93° (2023)81° (1933)73° (2021)
Record low−33° (2019)−30° (1905)−15° (1962)10° (1982)26° (2005)36° (1972)44° (1975)38° (1915)24° (1942)9° (1925)−6° (1977)−22° (1924)

Normals 1991–2020 and records since 1900 at Aledo, here. NOAA, through RCC-ACIS.

MILE7
ON THE NETWORK

Around Aledo on the Forecast Network

Neighboring plates

Moline IL · 24 MI 24 miles northeast Davenport IA · 26 MI 26 miles north Aurora IL · 133 MI 133 miles east Naperville IL · 139 MI 139 miles east Des Moines IA · 151 MI 151 miles west Chicago IL · 165 MI 165 miles east
FORECASTCITY
Map of Aledo, Illinois. Explore the plate
ILLINOIS · MERCER

Aledo

3,522 people, 740 ft above sea level in Mercer County.

740 ftElevation
3,522People
2 sq miLand
Clear 39°
ClearDew point 28°
1

Today in Aledo

NEXT 15 HOURS
Now clear night 39° 0%
8p clear night 35° 0%
11p clear night 32° 0%
2a mostly clear night 29° 0%
5a mostly cloudy night 27° 0%
8a partly cloudy day 30° 0%
Showers
NEXT RAINFriday · 40%
→
Sat0%
Sunny Sunny
26
39
A
Sun0%
Mostly sunny; warmer Mostly sunny; warmer
28
50
A
Mon0%
Mostly sunny Mostly sunny
33
54
A
Tue0%
Mostly sunny Mostly sunny
38
57
A
Wed20%
Partly cloudy Partly cloudy
47
59
B
Thu20%
Mostly sunny Mostly sunny
44
62
C
Fri40%
Chance of showers Chance of showers
51
63
C
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
THIS WEEK IN 2015 · NOV. 17–18, 2015

3.42 inches in two days, the most for this week since 1900.

2

What Aledo stands on

Aledo’s center stands about 740 ft above sea level. Within three miles the land runs from 610 ft to 760 ft, a difference of 150 ft: gently rolling country.

Aledo, southwest to northeast Aledo740 ftPope Creekabout 590 ftEdwards Riverabout 620 ftHigh point800 ft ← SWNE → 24 miles through the town center; vertical exaggeration about 122×. Colors: rock at the surface.
Elevation, center740 ft
Within 3 miles610 to 760 ft
Lie of the landGently rolling (150 ft of relief)
5

Aledo’s year

Aledo has a hot-summer humid continental climate. Summer afternoons average 85° in July; winter nights fall to about 13° in January. A normal year brings about 22 inches of snow; with the rain, that comes to about 39 inches of water.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 1234 39.1 in
July, average85° / 64° · high / low, the warmest month
January, average31° / 13° · high / low, the coldest month
Rain and melted snow39.1 in · wettest months: June and May
Snow a year21.8 in · snowiest: January
Hottest on record113°F · July 15, 1936
Coldest on record−33°F · January 31, 2019
Wettest day on record6.90 in · August 17, 1930
Snowiest day on record14.0 in · January 3, 1971
90° days a year14 · very few reach 100°
Nights at or below 32°140 · and 47 days that stay below freezing
Climate typeHot-summer humid continental · Köppen Dfa
1Freeze season · from the first fall freeze, about Oct. 17, to the last in spring, about April 19 (median dates)
2Highs below freezing · Dec. 30 to Feb. 5; normal highs stay below 32°
3Lows below freezing · Nov. 8 to March 31; normal lows fall below 32°
4Wettest stretch · April through June: 14.4 of the year’s 39.1 inches
NOVEMBER 14 IN THE RECORD

On November 14 Aledo normally reaches 50° and falls to 30°. The record high is 74°, in 1971; the record low 6°, in 1940. The most rain on this date, 1.24 in, fell in 1926.

Normals 1991–2020 and records since 1900 at Aledo, here. NOAA, through RCC-ACIS.
3

Where the rain goes

≈ 1,420 mito the Gulf of AmericaPike Run → Pope Creek → Mississippi

A raindrop that lands in Aledo reaches the Gulf of America by way of Pike Run, Pope Creek and the Mississippi: about 1,420 river miles.