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

Bellevue

7,996 people, 970 ft above sea level in Allegheny County.

970 ftElevation, city center
7,996People, 2024 estimate
1 sq miLand area
Sunny 42°
Sunny now Dew point 31° · WNW 18 mph · high 42°
City of Bellevue River Interstate 2 miles
Explore the plate Order a print

The Bellevue 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 Bellevue

NWS forecast and National Blend of Models · updated 1:00 PM EST
RIGHT NOW Pittsburgh International Airport (KPIT) · 1:51 PM
Sunny
42° Sunny Feels like 34° · high of 42° near 2 PM
WindWNW 18 mphgusts 30
Humidity64%falling to 62% this afternoon
Pressure29.99 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 31° · Dryabout the same for three days
DryComfortableStickyMuggyOppressive
NEXT RAIN
Mostly cloudy
Tomorrow, about 9 AMin about 18 hours · 31% chance · rain
LIKELY AMOUNT0–0.09 inmost likely 0.01; 1 in 10 over 0.2
LAST RAINNov. 120.17 in · 2 dry days
ALERTS & OUTLOOKS
No watches or warnings for Allegheny County
NWS Pittsburgh and the Storm Prediction Center · checked 2:47 PM
SUN & MOON
↑ 7:05 AM5:04 PM ↓
9 h 58 m of daylight, 2 minutes less than yesterday
Waxing crescent, 25% lit. Next full moon: Nov. 24.
AIR & POLLEN
30
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
2p
5p
8p
11p
2a
5a
8a
11a
2p
5p
8p
11p
2a
5a
8a
11a
2p
5p
8p
11p
2a
5a
8a
11a
mostly cloudy day
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy night
rain
mostly cloudy day
mostly cloudy day
mostly cloudy night
partly cloudy night
partly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy day
mostly cloudy day
partly cloudy day
partly cloudy night
mostly clear night
mostly clear night
mostly clear night
mostly clear night
mostly sunny
mostly sunny
TEMPERATURE °F
42°
37°
44°
38°
47°
29°
CHANCE OF RAIN
31% · 0.02 in Sunday morning 50%
WIND, MPH
15
15
13
10
9
9
8
10
10
7
2
0
0
0
3
5
6
2
0
0
0
0
0
2
HOW IT FEELS · DEW POINT
Dry: dew points 28 to 38°

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 52° / 35°
SAT Nov. 14 Mostly cloudy Mostly cloudy
42° 35°
10% rain — WNW 15, gusts 28 A
SUN Nov. 15 Chance of showers Chance of showers
47° 35°
30% rain up to 0.09″ NNW 9 A
MON Nov. 16 Mostly cloudy Mostly cloudy
49° 29°
0% rain — NW 4 A
TUE Nov. 17 Sunny Sunny
53° 28°
0% rain — SSW 5 B
WED Nov. 18 Sunny Sunny
57° 30°
0% rain — S 5 B
THU Nov. 19 Partly cloudy Partly cloudy
60° 38°
0% rain — SSW 6 B
FRI Nov. 20 Mostly sunny Mostly sunny
61° 39°
0% rain — SW 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 Bellevue about 5,000 feet above the ground was over British Columbia three days ago, and over the Great Lakes a day ago, about 2,210 miles back along its path. Near the ground the air came from the Canadian Prairies; at 10,000 feet, from the open Pacific. 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, SIX YEARS AGO Nov. 11, 2020

The hottest this week has been

78° on Nov. 11, 2020, the hottest reading for this week of the year since 1991. Next is 73° in 2014.

73°
78°
20142020
Source: NOAA RCC-ACIS, the Emsworth L/D Ohio River record since 1991.
MILE2
THE GROUND

What Bellevue stands on

Bellevue’s center stands about 970 ft above sea level. Within three miles the land runs from 700 ft to 1,240 ft, a difference of 540 ft: hilly country. The highest named summit within 15 miles is Rich Hill, about 1,290 ft, 13 miles east-northeast.

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.

Clinton to Penn Hills, cut in half

A section west to east, 24 miles through the town center
750 ft1,000 ft1,250 ft BELLEVUE970 ftLow point700 ftO'Hara920 ft ← W · ClintonPenn Hills · E →

Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 29×. 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

Casselman Formation

Shale, clastic. Age: Carboniferous, 299 to 324 million years old. About 14 mi of the line.

Glenshaw Formation

Shale. Age: Carboniferous, 299 to 324 million years old. About 9 mi of the line.

Monongahela Group

Limestone, shale, sandstone. Age: Carboniferous, 299 to 324 million years old. About 0.7 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 Bellevue’s rain goes

A raindrop that lands in Bellevue reaches the Gulf of America by way of the Ohio and the Mississippi: about 1,940 river miles.

THE WAY DOWN, TO SCALE
Bellevue≈ 1,940 mi · the Gulf of America
FROM THE CENTER OF BELLEVUE ≈ 1,940 mi to the Gulf of America Ohio → Mississippi

970 miles of the trip are on the Mississippi.

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

MILE5
THE ALMANAC

Bellevue’s year

1991–2020 normals · records since 1991 · Emsworth L/D Ohio River

Bellevue has a hot-summer humid continental climate. Summer afternoons average 86° in July; winter nights fall to about 21° in January. About 38 inches of rain fall in a normal year.

39°21°42°22°51°29°64°39°74°49°81°59°86°64°84°62°78°55°66°44°54°33°43°26° JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 1 TODAY BELLEVUE 38.3 in rain a year
Normal high to low, by month Rain by month Freezing
July, average86° / 64°high / low, the warmest month
January, average39° / 21°high / low, the coldest month
Rain a year38.3 inwettest months: July and June
Hottest on record102°FAugust 13, 1995
Coldest on record−13°FJanuary 21, 1994
Wettest day on record4.08 inSeptember 30, 2015
Snowiest day on record18.5 inFebruary 6, 2010
Climate typeHot-summer humid continentalKöppen Dfa

AROUND THE RING

1Lows below freezingNov. 17 to March 26; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 Bellevue normally reaches 54° and falls to 33°. The record high is 70°, in 1994; the record low 16°, in 2019. The most rain on this date, 1.10 in, fell in 1997.

MONTH BY MONTH
JanFebMarAprMayJunJulAugSepOctNovDec
Normal high39°42°51°64°74°81°86°84°78°66°54°43°
Normal low21°22°29°39°49°59°64°62°55°44°33°26°
Rain, inches3.362.783.183.223.523.533.643.253.192.802.833.02

Normals 1991–2020 and records since 1991 at Emsworth L/D Ohio River, here, 250 ft lower. NOAA, through RCC-ACIS.

MILE7
ON THE NETWORK

Around Bellevue on the Forecast Network

Neighboring plates

Pittsburgh PA · 6 MI 6 miles southeast Bethel Park PA · 12 MI 12 miles south Cleveland OH · 109 MI 109 miles northwest Columbus OH · 159 MI 159 miles west Arlington VA · 193 MI 193 miles southeast Washington DC · 195 MI 195 miles southeast
FORECASTCITY
Map of Bellevue, Pennsylvania. Explore the plate
PENNSYLVANIA · ALLEGHENY

Bellevue

7,996 people, 970 ft above sea level in Allegheny County.

970 ftElevation
7,996People
1 sq miLand
Sunny 42°
SunnyDew point 31°
1

Today in Bellevue

NEXT 15 HOURS
Now mostly cloudy day 42° 9%
5p mostly cloudy night 41° 3%
8p mostly cloudy night 39° 4%
11p mostly cloudy night 39° 8%
2a mostly cloudy night 38° 9%
5a mostly cloudy night 38° 17%
Mostly cloudy
NEXT RAINTomorrow about 9 AM · 31%
→
Sat10%
Mostly cloudy Mostly cloudy
35
42
A
Sun30%
Chance of showers Chance of showers
35
47
A
Mon0%
Mostly cloudy Mostly cloudy
29
49
A
Tue0%
Sunny Sunny
28
53
B
Wed0%
Sunny Sunny
30
57
B
Thu0%
Partly cloudy Partly cloudy
38
60
B
Fri0%
Mostly sunny Mostly sunny
39
61
B
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
THIS WEEK, SIX YEARS AGO · NOV. 11, 2020

78°, the hottest this week of the year has been since 1991.

2

What Bellevue stands on

Bellevue’s center stands about 970 ft above sea level. Within three miles the land runs from 700 ft to 1,240 ft, a difference of 540 ft: hilly country. The highest named summit within 15 miles is Rich Hill, about 1,290 ft, 13 miles east-northeast.

Bellevue, west to east Bellevue970 ft ← WE → 24 miles through the town center; vertical exaggeration about 55×. Colors: rock at the surface.
Elevation, center970 ft
Within 3 miles700 to 1,240 ft
Lie of the landHilly (540 ft of relief)
High point nearbyRich Hill, 1,290 ft, 13 mi east-northeast
Rock at the surfaceGlenshaw Formation
Its ageCarboniferous, 299 to 324 million years old
5

Bellevue’s year

Bellevue has a hot-summer humid continental climate. Summer afternoons average 86° in July; winter nights fall to about 21° in January. About 38 inches of rain fall in a normal year.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 1 38.3 in
July, average86° / 64° · high / low, the warmest month
January, average39° / 21° · high / low, the coldest month
Rain a year38.3 in · wettest months: July and June
Hottest on record102°F · August 13, 1995
Coldest on record−13°F · January 21, 1994
Wettest day on record4.08 in · September 30, 2015
Snowiest day on record18.5 in · February 6, 2010
Climate typeHot-summer humid continental · Köppen Dfa
1Lows below freezing · Nov. 17 to March 26; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 Bellevue normally reaches 54° and falls to 33°. The record high is 70°, in 1994; the record low 16°, in 2019. The most rain on this date, 1.10 in, fell in 1997.

Normals 1991–2020 and records since 1991 at Emsworth L/D Ohio River, here, 250 ft lower. NOAA, through RCC-ACIS.
3

Where the rain goes

≈ 1,940 mito the Gulf of AmericaOhio → Mississippi

A raindrop that lands in Bellevue reaches the Gulf of America by way of the Ohio and the Mississippi: about 1,940 river miles.

970 miles of the trip are on the Mississippi.