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

Fairfield

2,026 people, 1,470 ft above sea level in Westmoreland County.

1,470 ftElevation, city center
2,026People, 2024 estimate
61 sq miLand area
Sunny 35°
Sunny now Dew point 32° · W 15 mph · high 36°
City of Fairfield River Interstate 2 miles
Explore the plate Order a print

The Fairfield 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 Fairfield

NWS forecast and National Blend of Models · updated 4:00 PM EST
RIGHT NOW Johnstown - Cambria County Airport (KJST) · 4:54 PM
Sunny
35° Sunny Feels like 26° · high of 36° near 5 PM
WindW 15 mphgusts 31
Humidity88%rising to 96% by morning
Pressure29.94 in →steady
Visibility8 mihazy
CloudsClear
UV index—no forecast
Dew point 32° · Dryabout the same for three days
DryComfortableStickyMuggyOppressive
NEXT RAIN
Snow
Tonight, about 9 PMin about 4 hours · 31% chance · rain
LIKELY AMOUNT—amounts come within 3 days
LAST RAINNov. 120.3 in · 2 dry days
ALERTS & OUTLOOKS
No watches or warnings for Westmoreland County
NWS Pittsburgh and the Storm Prediction Center · checked 5:17 PM
SUN & MOON
↑ 7:01 AM5:00 PM ↓
9 h 59 m of daylight, 2 minutes less than yesterday
Waxing crescent, 26% lit. Next full moon: Nov. 24.
AIR & POLLEN
16
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
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
snow
fog
fog
overcast
mostly cloudy day
mostly cloudy day
mostly cloudy day
mostly cloudy night
partly cloudy night
partly cloudy night
partly cloudy night
partly 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
mostly sunny
TEMPERATURE °F
36°
35°
39°
34°
41°
30°
CHANCE OF RAIN
31% · 0.01 in Saturday night 50%
WIND, MPH
17
16
14
12
12
12
13
13
10
8
7
7
8
9
9
9
8
5
5
4
3
5
7
6
HOW IT FEELS · DEW POINT
Dry: dew points 28 to 34°

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 48° / 33°
SAT Nov. 14 Chance of showers Chance of showers
36° 35°
30% rain — WNW 16, gusts 31 A
SUN Nov. 15 Mostly cloudy Mostly cloudy
40° 34°
20% rain — NW 12, gusts 25 A
MON Nov. 16 Mostly cloudy Mostly cloudy
43° 30°
0% rain — NW 9 A
TUE Nov. 17 Partly cloudy Partly cloudy
48° 31°
0% rain — WSW 5 A
WED Nov. 18 Sunny Sunny
54° 34°
0% rain — SSW 5 B
THU Nov. 19 Mostly sunny Mostly sunny
57° 40°
0% rain — SW 6 B
FRI Nov. 20 Mostly sunny Mostly sunny
57° 41°
0% rain — W 3 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 Fairfield about 5,000 feet above the ground was over British Columbia three days ago, and over the Great Lakes a day ago, about 2,490 miles back along its path. It came down from about 11,500 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 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

77° on Nov. 11, 2020, the hottest reading for this week of the year since 1946. Next is 74° in 1956.

74°
77°
19562020
Source: NOAA RCC-ACIS, the Indiana 3 SE record since 1946.
MILE2
THE GROUND

What Fairfield stands on

Fairfield’s center stands about 1,470 ft above sea level. Within three miles the land runs from 1,120 ft to 1,640 ft, a difference of 520 ft: hilly country. The highest named summit within 15 miles is Pea Vine Hill, about 2,940 ft, 10 miles south.

The section below crosses 8 rock units mapped at the surface.

Jenner to Black Lick, cut in half

A section south to north, 24 miles through the town center
1,000 ft1,500 ft2,000 ft2,500 ft FAIRFIELD1,470 ftJenner1,890 ftHigh point of the line2,850 ftConemaugh Riverabout 1,010 ftBurrell1,150 ft ← S · JennerBlack Lick · N →

Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 10×. 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 10 mi of the line.

Glenshaw Formation

Shale. Age: Carboniferous, 299 to 324 million years old. About 4 mi of the line.

Allegheny Formation

Sandstone. Age: Carboniferous, 299 to 324 million years old. About 4 mi of the line.

Mauch Chunk Formation

Shale, siltstone, sandstone. Age: Carboniferous, 324 to 359 million years old. About 3 mi of the line.

Burgoon Sandstone

Sandstone. Age: Carboniferous, 324 to 359 million years old. About 2 mi of the line.

Pottsville Formation

Sandstone, conglomerate. 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. 2 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 Fairfield’s rain goes

A raindrop that lands in Fairfield reaches the Gulf of America by way of Hendricks Creek, Tubmill Creek, the Conemaugh, the Kiskiminetas, the Allegheny, the Ohio and the Mississippi: about 2,040 river miles.

THE WAY DOWN, TO SCALE
Fairfield≈ 2,040 mi · the Gulf of America
FROM THE CENTER OF FAIRFIELD ≈ 2,040 mi to the Gulf of America Hendricks Creek → Tubmill 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 Fairfield; river miles along the main stem, rounded.

MILE5
THE ALMANAC

Fairfield’s year

1991–2020 normals · records since 1946 · Indiana 3 SE, 18 mi north

Fairfield has a warm-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 18° in January. A normal year brings about 46 inches of snow; with the rain, that comes to about 48 inches of water.

36°18°39°18°49°25°62°35°72°46°79°54°83°59°81°58°75°51°63°40°51°30°41°24° JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 TODAY FAIRFIELD 47.9 in rain and snowmelt
Normal high to low, by month Record high to low, by day Rain by month Freezing
July, average83° / 59°high / low, the warmest month
January, average36° / 18°high / low, the coldest month
Rain and melted snow47.9 inwettest months: July and June
Snow a year45.8 insnowiest: January
Hottest on record99°FAugust 17, 1988
Coldest on record−26°FFebruary 2, 1961
Wettest day on record5.27 inJuly 20, 1977
Snowiest day on record21.0 inJanuary 5, 1994
90° days a year8none reach 100°
Nights at or below 32°131and 31 days that stay below freezing
Climate typeWarm-summer humid continentalKöppen Dfb

AROUND THE RING

1Freeze seasonfrom the first fall freeze, about Oct. 17, to the last in spring, about May 6 (median dates)
2Lows below freezingNov. 6 to April 9; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 Fairfield normally reaches 52° and falls to 30°. The record high is 73°, in 1994; the record low 11°, in 1986. The most rain on this date, 0.77 in, fell in 1997.

MONTH BY MONTH
JanFebMarAprMayJunJulAugSepOctNovDec
Normal high36°39°49°62°72°79°83°81°75°63°51°41°
Normal low18°18°25°35°46°54°59°58°51°40°30°24°
Rain and melt, in3.642.953.884.034.324.815.134.264.183.523.503.64
Snow, inches13.311.86.11.10.00.00.00.00.00.02.710.8
Record high75° (1950)78° (2017)86° (1998)91° (1976)91° (2018)95° (1953)98° (2011)99° (1988)97° (1953)87° (2019)81° (1961)76° (1999)
Record low−24° (1994)−26° (1961)−10° (2015)10° (1950)16° (1947)31° (1977)35° (1988)34° (1965)25° (1957)11° (1952)−4° (1958)−19° (1951)

Normals 1991–2020 and records since 1946 at Indiana 3 SE, 18 miles north, 370 ft lower. NOAA, through RCC-ACIS.

MILE7
ON THE NETWORK

Around Fairfield on the Forecast Network

Neighboring plates

Hempfield PA · 23 MI 23 miles west Penn Hills PA · 37 MI 37 miles west Pittsburgh PA · 44 MI 44 miles west Washington DC · 150 MI 150 miles southeast Baltimore MD · 152 MI 152 miles southeast Cleveland OH · 154 MI 154 miles northwest
FORECASTCITY
Map of Fairfield, Pennsylvania. Explore the plate
PENNSYLVANIA · WESTMORELAND

Fairfield

2,026 people, 1,470 ft above sea level in Westmoreland County.

1,470 ftElevation
2,026People
61 sq miLand
Sunny 35°
SunnyDew point 32°
1

Today in Fairfield

NEXT 15 HOURS
Now mostly cloudy night 36° 29%
8p fog 36° 24%
11p fog 35° 17%
2a fog 35° 10%
5a fog 35° 10%
8a mostly cloudy day 36° 3%
Snow
NEXT RAINTonight about 9 PM · 31%
→
Sat30%
Chance of showers Chance of showers
35
36
A
Sun20%
Mostly cloudy Mostly cloudy
34
40
A
Mon0%
Mostly cloudy Mostly cloudy
30
43
A
Tue0%
Partly cloudy Partly cloudy
31
48
A
Wed0%
Sunny Sunny
34
54
B
Thu0%
Mostly sunny Mostly sunny
40
57
B
Fri0%
Mostly sunny Mostly sunny
41
57
C
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

77°, the hottest this week of the year has been since 1946.

2

What Fairfield stands on

Fairfield’s center stands about 1,470 ft above sea level. Within three miles the land runs from 1,120 ft to 1,640 ft, a difference of 520 ft: hilly country. The highest named summit within 15 miles is Pea Vine Hill, about 2,940 ft, 10 miles south.

Fairfield, south to north Fairfield1,470 ftConemaugh Riverabout 1,010 ft ← SN → 24 miles through the town center; vertical exaggeration about 20×. Colors: rock at the surface.
Elevation, center1,470 ft
Within 3 miles1,120 to 1,640 ft
Lie of the landHilly (520 ft of relief)
High point nearbyPea Vine Hill, 2,940 ft, 10 mi south
5

Fairfield’s year

Fairfield has a warm-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 18° in January. A normal year brings about 46 inches of snow; with the rain, that comes to about 48 inches of water.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 47.9 in
July, average83° / 59° · high / low, the warmest month
January, average36° / 18° · high / low, the coldest month
Rain and melted snow47.9 in · wettest months: July and June
Snow a year45.8 in · snowiest: January
Hottest on record99°F · August 17, 1988
Coldest on record−26°F · February 2, 1961
Wettest day on record5.27 in · July 20, 1977
Snowiest day on record21.0 in · January 5, 1994
90° days a year8 · none reach 100°
Nights at or below 32°131 · and 31 days that stay below freezing
Climate typeWarm-summer humid continental · Köppen Dfb
1Freeze season · from the first fall freeze, about Oct. 17, to the last in spring, about May 6 (median dates)
2Lows below freezing · Nov. 6 to April 9; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 Fairfield normally reaches 52° and falls to 30°. The record high is 73°, in 1994; the record low 11°, in 1986. The most rain on this date, 0.77 in, fell in 1997.

Normals 1991–2020 and records since 1946 at Indiana 3 SE, 18 miles north, 370 ft lower. NOAA, through RCC-ACIS.
3

Where the rain goes

≈ 2,040 mito the Gulf of AmericaHendricks Creek → Tubmill Creek → … → Allegheny → Ohio → Mississippi

A raindrop that lands in Fairfield reaches the Gulf of America by way of Hendricks Creek, Tubmill Creek, the Conemaugh, the Kiskiminetas, the Allegheny, the Ohio and the Mississippi: about 2,040 river miles.

970 miles of the trip are on the Ohio.