FORECAST CITY
Sign in
Shaded-relief map of Hartleton, Pennsylvania: rivers, roads, the city limits and where the water drains.
PENNSYLVANIA · UNION COUNTY

Hartleton

248 people, 660 ft above sea level in Union County.

660 ftElevation, city center
248People, 2024 estimate
1 sq miLand area
Clear 45°
Clear now Dew point 34° · WNW 7 mph · high 45°
City of Hartleton River Interstate 2 miles
Explore the plate Order a print

The Hartleton 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 Hartleton

NWS forecast and National Blend of Models · updated 5:00 PM EST
RIGHT NOW Selinsgrove Penn Valley Airport (KSEG) · 4:53 PM
Clear
45° Clear Feels like 41° · high of 45° near 5 PM
WindWNW 7 mphno gusts
Humidity65%rising to 92% by morning
Pressure29.91 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 34° · Dryabout the same for three days
DryComfortableStickyMuggyOppressive
NEXT RAIN
Clear
Not this weeknone in the forecast for a week
LIKELY AMOUNT—nothing expected
LAST RAINNov. 120.67 in · 2 dry days
ALERTS & OUTLOOKS
No watches or warnings for Union County
NWS State College and the Storm Prediction Center · checked 5:47 PM
SUN & MOON
↑ 6:54 AM4:51 PM ↓
9 h 56 m of daylight, 2 minutes less than yesterday
Waxing crescent, 26% lit. Next full moon: Nov. 24.
AIR & POLLEN
20
GOODAir quality index · ozone
Tomorrow: 20, 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
mostly cloudy night
mostly cloudy night
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy day
mostly cloudy day
mostly cloudy day
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy night
mostly cloudy day
mostly cloudy day
partly cloudy day
mostly clear night
mostly clear night
mostly clear night
mostly clear night
mostly clear night
mostly sunny
mostly sunny
mostly sunny
TEMPERATURE °F
45°
33°
49°
33°
52°
28°
CHANCE OF RAIN
50%
WIND, MPH
8
7
6
6
6
8
9
9
5
3
1
2
2
5
6
4
1
0
0
0
0
0
2
1
HOW IT FEELS · DEW POINT
Dry: dew points 27 to 35° ↑ Humid air returns More humid: 35° by Tuesday

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 52° / 32°
SAT Nov. 14 Mostly cloudy Mostly cloudy
45° 29°
10% rain — WNW 7 A
SUN Nov. 15 Partly cloudy Partly cloudy
49° 27°
0% rain — NNW 8 A
MON Nov. 16 Partly cloudy Partly cloudy
54° 23°
0% rain — NNW 5 B
TUE Nov. 17 Sunny Sunny
58° 25°
0% rain — W 5 A
WED Nov. 18 Sunny Sunny
60° 26°
0% rain — SW 5 B
THU Nov. 19 Mostly sunny Mostly sunny
61° 30°
0% rain — SW 5 B
FRI Nov. 20 Mostly sunny Mostly sunny
63° 33°
0% rain — WNW 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 Hartleton about 5,000 feet above the ground was over the Canadian Prairies three days ago, and over the Great Lakes a day ago, about 2,240 miles back along its path. Near the ground the air came from the Canadian Prairies; at 10,000 feet, from the Gulf of Alaska. It feels dry all the same. Traced back 72 hours through NOAA’s hourly RAP analyses and the GFS beyond them, nine paths at each of three heights.

THIS WEEK, NINE YEARS AGO Nov. 11, 2017

The coldest this week has been

10° on Nov. 11, 2017, the coldest reading for this week of the year since 1996. Next is 15° in 2019.

15°
10°
20192017
Source: NOAA RCC-ACIS, the Lewisburg record since 1996.
MILE2
THE GROUND

What Hartleton stands on

Hartleton’s center stands about 660 ft above sea level. Within three miles the land runs from 560 ft to 1,540 ft, a difference of 980 ft: steep hill country. The highest named summit within 15 miles is Buffalo Mountain, about 2,230 ft, 6 miles west-northwest.

Under the town center the state geologic map shows Keyser and Tonoloway Formations, undivided (limestone), from the Silurian to Devonian, 359 to 445 million years old.

The section below crosses 13 rock units mapped at the surface.

Miles to Middlecreek, cut in half

A section northwest to southeast, 24 miles through the town center
500 ft1,000 ft1,500 ft2,000 ft HARTLETON660 ftMiles1,330 ftBuffalo Mountain2,230 ftPenns Creek640 ft ← NW · MilesMiddlecreek · SE →

Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 12×. 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

Juniata Formation

Sandstone, shale. Age: Ordovician, 445 to 487 million years old. About 4 mi of the line.

Bloomsburg and Mifflintown Formations, undivided

Shale. Age: Silurian, 422 to 445 million years old. About 3 mi of the line.

Sherman Creek Member of Catskill Formation

Siltstone, mudstone. Age: Late Devonian, 359 to 384 million years old. About 3 mi of the line.

Tuscarora Formation

Quartzite. Age: Silurian, 422 to 445 million years old. About 3 mi of the line.

Keyser and Tonoloway Formations, undivided

Limestone. Age: Silurian to Devonian, 359 to 445 million years old. About 2 mi of the line.

Wills Creek Formation

Shale. Age: Silurian, 422 to 445 million years old. About 2 mi of the line.

From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 7 smaller units 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 Hartleton’s rain goes

A raindrop that lands in Hartleton reaches Chesapeake Bay and the Atlantic Ocean by way of Cold Run, Penns Creek and the Susquehanna: about 150 river miles.

THE WAY DOWN, TO SCALE
Hartleton≈ 150 mi · Chesapeake Bay and the Atlantic Ocean
FROM THE CENTER OF HARTLETON ≈ 150 mi to Chesapeake Bay and the Atlantic Ocean Cold Run → Penns Creek → Susquehanna

Lake on the way: Lake Aldred.

75 miles of the trip are on the Susquehanna.

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

MILE5
THE ALMANAC

Hartleton’s year

1991–2020 normals · records since 1996 · Lewisburg, 15 mi east-northeast

Hartleton has a hot-summer humid continental climate. Summer afternoons average 84° in July; winter nights fall to about 19° in January. A normal year brings about 29 inches of snow; with the rain, that comes to about 44 inches of water.

35°19°39°20°48°27°62°37°72°48°80°57°84°62°83°60°75°52°63°41°50°31°40°24° JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 TODAY HARTLETON 43.9 in rain and snowmelt
Normal high to low, by month Rain by month Freezing
July, average84° / 62°high / low, the warmest month
January, average35° / 19°high / low, the coldest month
Rain and melted snow43.9 inwettest months: July and September
Snow a year28.8 insnowiest: January
Hottest on record100°FJuly 23, 2011
Coldest on record−13°FJanuary 18, 2009
Wettest day on record6.77 inSeptember 7, 1999
Snowiest day on record13.7 inDecember 17, 2020
90° days a year13very few reach 100°
Nights at or below 32°133and 28 days that stay below freezing
Climate typeHot-summer humid continentalKöppen Dfa

AROUND THE RING

1Freeze seasonfrom the first fall freeze, about Oct. 19, to the last in spring, about April 26 (median dates)
2Lows below freezingNov. 11 to April 2; normal lows fall below 32°
MONTH BY MONTH
JanFebMarAprMayJunJulAugSepOctNovDec
Normal high35°39°48°62°72°80°84°83°75°63°50°40°
Normal low19°20°27°37°48°57°62°60°52°41°31°24°
Rain and melt, in3.132.413.483.753.933.744.494.284.413.813.103.35
Snow, inches8.07.85.30.80.00.00.00.00.00.21.35.4

Normals 1991–2020 and records since 1996 at Lewisburg, 15 miles east-northeast, 160 ft lower. NOAA, through RCC-ACIS.

MILE7
ON THE NETWORK

Around Hartleton on the Forecast Network

Neighboring plates

Williamsport PA · 24 MI 24 miles north State College PA · 37 MI 37 miles west Baltimore MD · 114 MI 114 miles south Philadelphia PA · 123 MI 123 miles southeast Washington DC · 138 MI 138 miles south New York NY · 169 MI 169 miles east
FORECASTCITY
Map of Hartleton, Pennsylvania. Explore the plate
PENNSYLVANIA · UNION

Hartleton

248 people, 660 ft above sea level in Union County.

660 ftElevation
248People
1 sq miLand
Clear 45°
ClearDew point 34°
1

Today in Hartleton

NEXT 15 HOURS
Now mostly cloudy night 45° 0%
8p mostly cloudy night 41° 11%
11p partly cloudy night 39° 1%
2a partly cloudy night 37° 1%
5a partly cloudy night 34° 0%
8a mostly sunny 36° 0%
Clear
NEXT RAINNone this week
→
Sat10%
Mostly cloudy Mostly cloudy
29
45
A
Sun0%
Partly cloudy Partly cloudy
27
49
A
Mon0%
Partly cloudy Partly cloudy
23
54
B
Tue0%
Sunny Sunny
25
58
A
Wed0%
Sunny Sunny
26
60
B
Thu0%
Mostly sunny Mostly sunny
30
61
B
Fri0%
Mostly sunny Mostly sunny
33
63
B
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
THIS WEEK, NINE YEARS AGO · NOV. 11, 2017

10°, the coldest this week of the year has been since 1996.

2

What Hartleton stands on

Hartleton’s center stands about 660 ft above sea level. Within three miles the land runs from 560 ft to 1,540 ft, a difference of 980 ft: steep hill country. The highest named summit within 15 miles is Buffalo Mountain, about 2,230 ft, 6 miles west-northwest.

Hartleton, northwest to southeast Hartleton660 ft ← NWSE → 24 miles through the town center; vertical exaggeration about 22×. Colors: rock at the surface.
Elevation, center660 ft
Within 3 miles560 to 1,540 ft
Lie of the landSteep hill country (980 ft of relief)
High point nearbyBuffalo Mountain, 2,230 ft, 6 mi west-northwest
Rock at the surfaceKeyser and Tonoloway Formations, undivided
Its ageSilurian to Devonian, 359 to 445 million years old
5

Hartleton’s year

Hartleton has a hot-summer humid continental climate. Summer afternoons average 84° in July; winter nights fall to about 19° in January. A normal year brings about 29 inches of snow; with the rain, that comes to about 44 inches of water.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 43.9 in
July, average84° / 62° · high / low, the warmest month
January, average35° / 19° · high / low, the coldest month
Rain and melted snow43.9 in · wettest months: July and September
Snow a year28.8 in · snowiest: January
Hottest on record100°F · July 23, 2011
Coldest on record−13°F · January 18, 2009
Wettest day on record6.77 in · September 7, 1999
Snowiest day on record13.7 in · December 17, 2020
90° days a year13 · very few reach 100°
Nights at or below 32°133 · and 28 days that stay below freezing
Climate typeHot-summer humid continental · Köppen Dfa
1Freeze season · from the first fall freeze, about Oct. 19, to the last in spring, about April 26 (median dates)
2Lows below freezing · Nov. 11 to April 2; normal lows fall below 32°
Normals 1991–2020 and records since 1996 at Lewisburg, 15 miles east-northeast, 160 ft lower. NOAA, through RCC-ACIS.
3

Where the rain goes

≈ 150 mito the AtlanticCold Run → Penns Creek → Susquehanna

A raindrop that lands in Hartleton reaches Chesapeake Bay and the Atlantic Ocean by way of Cold Run, Penns Creek and the Susquehanna: about 150 river miles.

Lake on the way: Lake Aldred.

75 miles of the trip are on the Susquehanna.