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Shaded-relief map of Lilburn, Georgia: rivers, roads, the city limits and where the water drains.
GEORGIA · GWINNETT COUNTY

Lilburn

16,210 people, 950 ft above sea level in Gwinnett County.

950 ftElevation, city center
16,210People, 2024 estimate
7 sq miLand area
Sunny 52°
Sunny now Dew point 29° · NNW 14 mph · high 51°
City of Lilburn River Interstate 2 miles
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The Lilburn 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 Lilburn

NWS forecast and National Blend of Models · updated 4:00 PM EST
RIGHT NOW De Kalb-Peachtree Airport (KPDK) · 3:53 PM
Sunny
52° Sunny Feels like 52° · high of 51° near 4 PM
WindNNW 14 mphno gusts
Humidity41%rising to 89% by morning
Pressure30.14 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 29° · Dry37° by Tuesday: more humid
DryComfortableStickyMuggyOppressive
NEXT RAIN
Clear
Not this weeknone in the forecast for a week
LIKELY AMOUNT—nothing expected
LAST RAINNov. 50.11 in · 9 dry days
ALERTS & OUTLOOKS
! Freeze WarningFreeze Warning issued November 14 at 2:23PM EST until November 15 at 9:00AM EST by NWS Peachtree City GA
NWS Peachtree City and the Storm Prediction Center · checked 4:45 PM
SUN & MOON
↑ 7:07 AM5:34 PM ↓
10 h 26 m of daylight, 2 minutes less than yesterday
Waxing crescent, 26% lit. Next full moon: Nov. 24.
AIR & POLLEN
34
GOODAir quality index · ozone
Tomorrow: 55, 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
4p
7p
10p
1a
4a
7a
10a
1p
4p
7p
10p
1a
4a
7a
10a
1p
4p
7p
10p
1a
4a
7a
10a
1p
clear day
clear night
clear night
clear night
clear night
mostly sunny
mostly sunny
mostly sunny
mostly sunny
mostly clear night
clear night
mostly clear night
mostly clear night
mostly sunny
mostly sunny
mostly sunny
clear day
clear night
clear night
clear night
clear night
clear day
clear day
clear day
TEMPERATURE °F
51°
32°
58°
36°
58°
37°
CHANCE OF RAIN
50%
WIND, MPH
9
7
3
0
0
0
0
0
0
0
0
0
2
5
7
5
2
0
0
1
4
5
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7
HOW IT FEELS · DEW POINT
Dry: dew points 27 to 37°

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 63° / 41°
SAT Nov. 14 Sunny Sunny
51° 29°
0% rain — NNW 9 A
SUN Nov. 15 Mostly sunny Mostly sunny
58° 33°
0% rain — N 0 B
MON Nov. 16 Mostly sunny Mostly sunny
59° 34°
0% rain — E 5 B
TUE Nov. 17 Sunny Sunny
61° 34°
0% rain — E 3 B
WED Nov. 18 Sunny Sunny
64° 37°
0% rain — E 5 A
THU Nov. 19 Mostly sunny Mostly sunny
68° 40°
0% rain — ENE 5 B
FRI Nov. 20 Mostly sunny Mostly sunny
70° 42°
0% rain — ENE 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 Lilburn about 5,000 feet above the ground was over the southern Plains three days ago, and over the Ohio Valley a day ago, about 920 miles back along its path. Near the ground the air came from the Carolinas; at 10,000 feet, from British Columbia. Traced back 72 hours through NOAA’s hourly RAP analyses, nine paths at each of three heights.

MILE2
THE GROUND

What Lilburn stands on

Lilburn’s center stands about 950 ft above sea level. Within three miles the land runs from 870 ft to 1,090 ft, a difference of 220 ft: rolling country. The highest named summit within 15 miles is Stone Mountain, about 1,670 ft, 6 miles south.

Under the town center the state geologic map shows Biotitic Gneiss / Mica Schist/ Amphibolite (amphibolite, biotite-gneiss, mica-schist), from the Precambrian to Paleozoic.

The section below crosses 7 rock units mapped at the surface.

Lakeview Estates to Johns Creek, cut in half

A section south to north, 24 miles through the town center
800 ft1,000 ft LILBURN950 ftRock Chapel Mountain970 ftMountain Park940 ftLow point690 ftBerkeley Lake1,010 ftJohns Creek980 ft ← S · Lakeview EstatesJohns Creek · N →

Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 43×. 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

Biotitic Gneiss / Mica Schist/ Amphibolite

Amphibolite, biotite-gneiss, mica-schist. Age: Precambrian to Paleozoic. About 8 mi of the line.

Granite Gneiss/ Amphibolite

Gneiss, amphibolite. Age: Precambrian to Paleozoic. About 5 mi of the line.

Granitic Gneiss undifferentiated

Gneiss. Age: Precambrian to Paleozoic. About 5 mi of the line.

Non-porphyritic granite

Granite. Age: Precambrian to Paleozoic. About 2 mi of the line.

Aluminous Schist

Schist. Age: Precambrian to Paleozoic. About 2 mi of the line.

Metagraywacke/ Mica Schist

Metagraywacke, mica-schist. Age: Precambrian to Paleozoic. 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. 1 smaller unit along the line are not listed.

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 Lilburn’s rain goes

A raindrop that lands in Lilburn reaches the Atlantic Ocean by way of Camp Creek, Jackson Creek, the Yellow, the Ocmulgee and the Altamaha: about 440 river miles.

THE WAY DOWN, TO SCALE
Lilburn≈ 440 mi · the Atlantic Ocean
FROM THE CENTER OF LILBURN ≈ 440 mi to the Atlantic Ocean Camp Creek → Jackson Creek → Yellow → Ocmulgee → Altamaha

Lake on the way: Jackson Lake.

240 miles of the trip are on the Ocmulgee.

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

MILE7
ON THE NETWORK

Around Lilburn on the Forecast Network

Neighboring plates

Atlanta GA · 19 MI 19 miles southwest South Fulton GA · 31 MI 31 miles southwest Columbus GA · 104 MI 104 miles southwest Augusta GA · 124 MI 124 miles east Knoxville TN · 144 MI 144 miles north Huntsville AL · 155 MI 155 miles west
FORECASTCITY
Map of Lilburn, Georgia. Explore the plate
GEORGIA · GWINNETT

Lilburn

16,210 people, 950 ft above sea level in Gwinnett County.

950 ftElevation
16,210People
7 sq miLand
Sunny 52°
SunnyDew point 29°
1

Today in Lilburn

NEXT 15 HOURS
Now clear day 51° 0%
7p clear night 44° 0%
10p clear night 39° 0%
1a clear night 36° 0%
4a clear night 33° 0%
7a mostly sunny 32° 0%
Clear
NEXT RAINNone this week
→
Sat0%
Sunny Sunny
29
51
A
Sun0%
Mostly sunny Mostly sunny
33
58
B
Mon0%
Mostly sunny Mostly sunny
34
59
B
Tue0%
Sunny Sunny
34
61
B
Wed0%
Sunny Sunny
37
64
A
Thu0%
Mostly sunny Mostly sunny
40
68
B
Fri0%
Mostly sunny Mostly sunny
42
70
B
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
2

What Lilburn stands on

Lilburn’s center stands about 950 ft above sea level. Within three miles the land runs from 870 ft to 1,090 ft, a difference of 220 ft: rolling country. The highest named summit within 15 miles is Stone Mountain, about 1,670 ft, 6 miles south.

Lilburn, south to north Lilburn950 ftRock Chapel Mountain970 ft ← SN → 24 miles through the town center; vertical exaggeration about 81×. Colors: rock at the surface.
Elevation, center950 ft
Within 3 miles870 to 1,090 ft
Lie of the landRolling (220 ft of relief)
High point nearbyStone Mountain, 1,670 ft, 6 mi south
Rock at the surfaceBiotitic Gneiss / Mica Schist/ Amphibolite
Its agePrecambrian to Paleozoic
3

Where the rain goes

≈ 440 mito the Atlantic OceanCamp Creek → Jackson Creek → Yellow → Ocmulgee → Altamaha

A raindrop that lands in Lilburn reaches the Atlantic Ocean by way of Camp Creek, Jackson Creek, the Yellow, the Ocmulgee and the Altamaha: about 440 river miles.

Lake on the way: Jackson Lake.

240 miles of the trip are on the Ocmulgee.