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Shaded-relief map of Elderton, Pennsylvania: rivers, roads, the city limits and where the water drains.
PENNSYLVANIA · ARMSTRONG COUNTY

Elderton

320 people, 1,260 ft above sea level in Armstrong County.

1,260 ftElevation, city center
320People, 2024 estimate
0 sq miLand area
Clear 37°
Clear now Dew point 36° · W 13 mph · high 39°
City of Elderton River Interstate 2 miles
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The Elderton 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 Elderton

NWS forecast and National Blend of Models · updated 6:00 PM EST
RIGHT NOW Indiana County Airport - Jimmy Stewart Field (KIDI) · 7:35 PM
Clear
37° Clear Feels like 29° · high of 39° near 7 PM
WindW 13 mphgusts 22
Humidity93%rising to 100% by morning
Pressure30.05 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 36° · Dryabout the same for three days
DryComfortableStickyMuggyOppressive
NEXT RAIN
Mostly cloudy
Tonight, about 9 PMin about 1 hours · 46% chance · rain
LIKELY AMOUNT—amounts come within 3 days
LAST RAINNov. 140.01 in · 0 dry days
ALERTS & OUTLOOKS
No watches or warnings for Armstrong County
NWS Pittsburgh and the Storm Prediction Center · checked 7:47 PM
SUN & MOON
↑ 7:02 AM5:00 PM ↓
9 h 57 m of daylight, 2 minutes less than yesterday
Waxing crescent, 27% lit. Next full moon: Nov. 24.
AIR & POLLEN
18
GOODAir quality index · ozone
Tomorrow: 25, 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
7p
10p
1a
4a
7a
10a
1p
4p
7p
10p
1a
4a
7a
10a
1p
4p
7p
10p
1a
4a
7a
10a
1p
4p
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy day
mostly cloudy day
mostly cloudy day
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy day
mostly cloudy day
mostly cloudy day
mostly cloudy night
partly cloudy night
partly cloudy night
mostly clear night
mostly clear night
mostly sunny
mostly sunny
mostly sunny
clear night
TEMPERATURE °F
39°
35°
43°
34°
45°
29°
CHANCE OF RAIN
46% · 0.04 in Saturday night 50%
WIND, MPH
13
10
8
8
8
10
9
7
4
0
1
2
3
6
7
5
2
0
0
0
1
4
5
3
HOW IT FEELS · DEW POINT
Dry: dew points 29 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 Chance of showers Chance of showers
39° 31°
50% rain — W 12 A
SUN Nov. 15 Mostly cloudy Mostly cloudy
45° 30°
20% rain — NNW 9 A
MON Nov. 16 Mostly cloudy Mostly cloudy
48° 25°
0% rain — NW 6 A
TUE Nov. 17 Partly cloudy Partly cloudy
52° 25°
0% rain — SW 5 B
WED Nov. 18 Sunny Sunny
56° 28°
0% rain — S 5 A
THU Nov. 19 Mostly sunny Mostly sunny
59° 35°
0% rain — SSW 3 B
FRI Nov. 20 Partly cloudy Partly cloudy
60° 37°
0% rain — SW 5 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 Elderton about 5,000 feet above the ground was over Canada three days ago, and over Ontario a day ago, about 2,510 miles back along its path. It came down from about 13,200 feet up, warming and drying as it sank. Near the ground the air came from the Canadian Prairies; at 10,000 feet, from the open Pacific. 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 1994 Nov. 14, 1994

The hottest this week has been

76° on Nov. 14, 1994, the hottest reading for this week of the year since 1943. Next is 75° in 1949.

75°
76°
19491994
Source: NOAA RCC-ACIS, the Ford City 4 S Dam record since 1943.
MILE2
THE GROUND

What Elderton stands on

Elderton’s center stands about 1,260 ft above sea level. Within three miles the land runs from 980 ft to 1,440 ft, a difference of 460 ft: hilly country. The highest named summit within 15 miles is Warner Hill, about 1,710 ft, 8 miles southeast.

Under the town center the state geologic map shows Glenshaw Formation (shale), from the Carboniferous, 299 to 324 million years old.

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

Ford Cliff to Chevy Chase Heights, cut in half

A section northwest to southeast, 24 miles through the town center
750 ft1,000 ft1,250 ft1,500 ft ELDERTON1,260 ftFord City920 ftCrooked Creekabout 1,010 ftIndiana1,350 ft ← NW · Ford CliffChevy Chase Heights · SE →

Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 22×. 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

Glenshaw Formation

Shale. Age: Carboniferous, 299 to 324 million years old. About 20 mi of the line.

Casselman Formation

Shale, clastic. Age: Carboniferous, 299 to 324 million years old. About 3 mi of the line.

Allegheny Formation

Sandstone. Age: Carboniferous, 299 to 324 million years old. 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.

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 Elderton’s rain goes

A raindrop that lands in Elderton reaches the Gulf of America by way of Crooked Creek, the Allegheny, the Ohio and the Mississippi: about 2,020 river miles.

THE WAY DOWN, TO SCALE
Elderton≈ 2,020 mi · the Gulf of America
FROM THE CENTER OF ELDERTON ≈ 2,020 mi to the Gulf of America Crooked Creek → Allegheny → Ohio → Mississippi

970 miles of the trip are on the Ohio.

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

MILE5
THE ALMANAC

Elderton’s year

1991–2020 normals · records since 1943 · Ford City 4 S Dam, 9 mi west

Elderton has a hot-summer humid continental climate. Summer afternoons average 84° in July; winter nights fall to about 17° in January. About 44 inches of rain fall in a normal year.

36°17°39°18°48°26°62°35°72°46°80°55°84°60°83°58°76°51°64°39°51°30°40°23° JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 TODAY ELDERTON 44.3 in rain a year
Normal high to low, by month Record high to low, by day Rain by month Freezing
July, average84° / 60°high / low, the warmest month
January, average36° / 17°high / low, the coldest month
Rain a year44.3 inwettest months: June and July
Hottest on record104°FJuly 23, 2011
Coldest on record−29°FJanuary 19, 1994
Wettest day on record7.00 inSeptember 18, 2004
Snowiest day on record17.0 inDecember 10, 1992
90° days a year17very few reach 100°
Nights at or below 32°141and 30 days that stay below freezing
Climate typeHot-summer humid continentalKöppen Dfa

AROUND THE RING

1Freeze seasonfrom the first fall freeze, about Oct. 14, to the last in spring, about May 6 (median dates)
2Lows below freezingNov. 6 to April 8; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 Elderton normally reaches 52° and falls to 30°. The record high is 76°, in 1994; the record low 9°, in 1986. The most rain on this date, 0.75 in, fell in 2007.

MONTH BY MONTH
JanFebMarAprMayJunJulAugSepOctNovDec
Normal high36°39°48°62°72°80°84°83°76°64°51°40°
Normal low17°18°26°35°46°55°60°58°51°39°30°23°
Rain, inches3.202.613.253.663.994.694.454.224.223.343.313.38
Record high76° (1950)77° (2017)87° (1998)91° (1985)96° (2000)99° (1988)104° (2011)98° (1995)98° (1953)91° (2019)84° (2026)75° (1998)
Record low−29° (1994)−23° (2015)−12° (2015)10° (1982)21° (1947)32° (1949)32° (1986)36° (1965)27° (1957)16° (1952)4° (1976)−19° (1945)

Normals 1991–2020 and records since 1943 at Ford City 4 S Dam, 9 miles west, 330 ft lower. NOAA, through RCC-ACIS.

MILE7
ON THE NETWORK

Around Elderton on the Forecast Network

Neighboring plates

Monroeville PA · 29 MI 29 miles southwest Pittsburgh PA · 38 MI 38 miles southwest Cleveland OH · 133 MI 133 miles northwest Arlington VA · 173 MI 173 miles southeast Baltimore MD · 174 MI 174 miles southeast Washington DC · 175 MI 175 miles southeast
FORECASTCITY
Map of Elderton, Pennsylvania. Explore the plate
PENNSYLVANIA · ARMSTRONG

Elderton

320 people, 1,260 ft above sea level in Armstrong County.

1,260 ftElevation
320People
0 sq miLand
Clear 37°
ClearDew point 36°
1

Today in Elderton

NEXT 15 HOURS
Now mostly cloudy night 39° 19%
10p rain 37° 46%
1a mostly cloudy night 36° 7%
4a mostly cloudy night 35° 5%
7a mostly cloudy day 35° 3%
10a mostly cloudy day 41° 1%
Mostly cloudy
NEXT RAINTonight about 9 PM · 46%
→
Sat50%
Chance of showers Chance of showers
31
39
A
Sun20%
Mostly cloudy Mostly cloudy
30
45
A
Mon0%
Mostly cloudy Mostly cloudy
25
48
A
Tue0%
Partly cloudy Partly cloudy
25
52
B
Wed0%
Sunny Sunny
28
56
A
Thu0%
Mostly sunny Mostly sunny
35
59
B
Fri0%
Partly cloudy Partly cloudy
37
60
C
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
THIS WEEK IN 1994 · NOV. 14, 1994

76°, the hottest this week of the year has been since 1943.

2

What Elderton stands on

Elderton’s center stands about 1,260 ft above sea level. Within three miles the land runs from 980 ft to 1,440 ft, a difference of 460 ft: hilly country. The highest named summit within 15 miles is Warner Hill, about 1,710 ft, 8 miles southeast.

Elderton, northwest to southeast Elderton1,260 ftCrooked Creekabout 1,010 ft ← NWSE → 24 miles through the town center; vertical exaggeration about 41×. Colors: rock at the surface.
Elevation, center1,260 ft
Within 3 miles980 to 1,440 ft
Lie of the landHilly (460 ft of relief)
High point nearbyWarner Hill, 1,710 ft, 8 mi southeast
Rock at the surfaceGlenshaw Formation
Its ageCarboniferous, 299 to 324 million years old
5

Elderton’s year

Elderton has a hot-summer humid continental climate. Summer afternoons average 84° in July; winter nights fall to about 17° in January. About 44 inches of rain fall in a normal year.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 44.3 in
July, average84° / 60° · high / low, the warmest month
January, average36° / 17° · high / low, the coldest month
Rain a year44.3 in · wettest months: June and July
Hottest on record104°F · July 23, 2011
Coldest on record−29°F · January 19, 1994
Wettest day on record7.00 in · September 18, 2004
Snowiest day on record17.0 in · December 10, 1992
90° days a year17 · very few reach 100°
Nights at or below 32°141 · and 30 days that stay below freezing
Climate typeHot-summer humid continental · Köppen Dfa
1Freeze season · from the first fall freeze, about Oct. 14, to the last in spring, about May 6 (median dates)
2Lows below freezing · Nov. 6 to April 8; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 Elderton normally reaches 52° and falls to 30°. The record high is 76°, in 1994; the record low 9°, in 1986. The most rain on this date, 0.75 in, fell in 2007.

Normals 1991–2020 and records since 1943 at Ford City 4 S Dam, 9 miles west, 330 ft lower. NOAA, through RCC-ACIS.
3

Where the rain goes

≈ 2,020 mito the Gulf of AmericaCrooked Creek → Allegheny → Ohio → Mississippi

A raindrop that lands in Elderton reaches the Gulf of America by way of Crooked Creek, the Allegheny, the Ohio and the Mississippi: about 2,020 river miles.

970 miles of the trip are on the Ohio.