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

Fredericktown

402 people, 810 ft above sea level in Washington County.

810 ftElevation, city center
402People, 2024 estimate
1 sq miLand area
Clear 40°
Clear now Dew point 30° · WNW 14 mph · high 39°
City of Fredericktown River Interstate 2 miles
Explore the plate Order a print

The Fredericktown 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 Fredericktown

NWS forecast and National Blend of Models · updated 6:00 PM EST
RIGHT NOW Washington County Airport (KAFJ) · 5:56 PM
Clear
40° Clear Feels like 32° · high of 39° near 6 PM
WindWNW 14 mphno gusts
Humidity67%rising to 100% by morning
Pressure30.12 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 30° · Dry41° by Sunday: more humid
DryComfortableStickyMuggyOppressive
NEXT RAIN
Clear
Not this weeknone in the forecast for a week
LIKELY AMOUNT—nothing expected
LAST RAINNov. 60.02 in · 8 dry days
ALERTS & OUTLOOKS
No watches or warnings for Washington County
NWS Pittsburgh and the Storm Prediction Center · checked 6:47 PM
SUN & MOON
↑ 7:04 AM5:05 PM ↓
10 h 1 m of daylight, 2 minutes less than yesterday
Waxing crescent, 26% lit. Next full moon: Nov. 24.
AIR & POLLEN
17
GOODAir quality index · fine particles
Tomorrow: 30, 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
6p
9p
Mid
3a
6a
9a
Noon
3p
6p
9p
Mid
3a
6a
9a
Noon
3p
6p
9p
Mid
3a
6a
9a
Noon
3p
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy day
mostly cloudy day
mostly cloudy day
mostly cloudy day
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy day
mostly cloudy day
mostly cloudy day
partly cloudy day
mostly clear night
mostly clear night
mostly clear night
mostly clear night
mostly sunny
mostly sunny
clear day
clear day
TEMPERATURE °F
39°
36°
45°
36°
47°
29°
CHANCE OF RAIN
50%
WIND, MPH
9
8
7
8
8
9
9
8
3
0
0
0
0
1
5
3
0
0
0
0
0
0
3
0
HOW IT FEELS · DEW POINT
Dry: dew points 30 to 41° ↑ 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 80° / 62°
SAT Nov. 14 Mostly cloudy Mostly cloudy
39° 32°
0% rain — W 9 A
SUN Nov. 15 Mostly cloudy; warmer Mostly cloudy; warmer
47° 32°
30% rain — WNW 8 A
MON Nov. 16 Mostly cloudy Mostly cloudy
50° 26°
0% rain — NW 2 A
TUE Nov. 17 Sunny Sunny
54° 26°
0% rain — SW 5 A
WED Nov. 18 Sunny Sunny
58° 28°
0% rain — SSW 5 B
THU Nov. 19 Mostly sunny Mostly sunny
61° 37°
0% rain — SSW 3 B
FRI Nov. 20 Mostly sunny Mostly sunny
62° 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 Fredericktown about 5,000 feet above the ground was over Canada three days ago, and over Ontario a day ago, about 2,540 miles back along its path. It came down from about 11,200 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 1990 Nov. 16, 1990

The hottest this week has been

79° on Nov. 16, 1990, the hottest reading for this week of the year since 1948. Next is 79° in 2020.

79°
79°
20201990
Source: NOAA RCC-ACIS, the Waynesburg 1 E record since 1948.
MILE2
THE GROUND

What Fredericktown stands on

Fredericktown’s center stands about 810 ft above sea level. Within three miles the land runs from 750 ft to 1,230 ft, a difference of 480 ft: hilly country. The highest named summit within 15 miles is Turkey Knob, about 1,480 ft, 11 miles south.

The section below crosses 5 rock units mapped at the surface.

Washington to Smock, cut in half

A section west to east, 24 miles through the town center
750 ft1,000 ft1,250 ft FREDERICKTOWN810 ftHigh point of the line1,420 ftTenmile Creekabout 850 ftHiller1,030 ft ← W · WashingtonSmock · E →

Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 28×. 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

Monongahela Group

Limestone, shale, sandstone. Age: Carboniferous, 299 to 324 million years old. About 8 mi of the line.

Waynesburg Formation

Sandstone, shale. Age: Carboniferous to Permian, 252 to 324 million years old. About 6 mi of the line.

Greene Formation

Sandstone, shale. Age: Permian, 252 to 299 million years old. About 6 mi of the line.

Washington Formation

Sandstone, shale. Age: Permian, 252 to 299 million years old. About 2 mi of the line.

Casselman Formation

Shale, clastic. Age: Carboniferous, 299 to 324 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.

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 Fredericktown’s rain goes

A raindrop that lands in Fredericktown reaches the Gulf of America by way of the Monongahela, the Ohio and the Mississippi: about 2,010 river miles.

THE WAY DOWN, TO SCALE
Fredericktown≈ 2,010 mi · the Gulf of America
FROM THE CENTER OF FREDERICKTOWN ≈ 2,010 mi to the Gulf of America Monongahela → 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 Fredericktown; river miles along the main stem, rounded.

MILE5
THE ALMANAC

Fredericktown’s year

1991–2020 normals · records since 1948 · Waynesburg 1 E, 11 mi southwest

Fredericktown has a warm-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 19° in January. A normal year brings about 30 inches of snow; with the rain, that comes to about 43 inches of water.

38°19°42°21°51°27°64°36°73°47°80°56°83°60°82°59°77°51°65°40°53°30°43°25° JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 TODAY 43.1 in rain and snowmelt
Normal high to low, by month Record high to low, by day Rain by month Freezing
July, average83° / 60°high / low, the warmest month
January, average38° / 19°high / low, the coldest month
Rain and melted snow43.1 inwettest months: May and July
Snow a year30.1 insnowiest: January
Hottest on record102°FJuly 8, 2012
Coldest on record−25°FJanuary 20, 1994
Wettest day on record4.62 inSeptember 18, 2004
Snowiest day on record18.8 inFebruary 17, 2003
90° days a year10none reach 100°
Nights at or below 32°139and 27 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 4 (median dates)
2Lows below freezingNov. 6 to April 4; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 Fredericktown normally reaches 54° and falls to 30°. The record high is 75°, in 1989; the record low 8°, in 1986. The most rain on this date, 0.54 in, fell in 1997.

MONTH BY MONTH
JanFebMarAprMayJunJulAugSepOctNovDec
Normal high38°42°51°64°73°80°83°82°77°65°53°43°
Normal low19°21°27°36°47°56°60°59°51°40°30°25°
Rain and melt, in3.422.843.743.384.344.174.313.883.513.252.943.29
Snow, inches9.58.15.60.40.00.00.00.00.00.20.75.6
Record high75° (1999)78° (2018)86° (2026)90° (1976)92° (1962)98° (2012)102° (2012)100° (1948)94° (2010)90° (2019)84° (1948)77° (1982)
Record low−25° (1994)−16° (2026)−8° (2015)14° (2013)22° (2002)31° (1972)38° (1988)34° (1982)26° (1963)16° (1988)2° (1976)−16° (1989)

Normals 1991–2020 and records since 1948 at Waynesburg 1 E, 11 miles southwest, 130 ft higher. NOAA, through RCC-ACIS.

MILE7
ON THE NETWORK

Around Fredericktown on the Forecast Network

Neighboring plates

Bethel Park PA · 22 MI 22 miles north Pittsburgh PA · 30 MI 30 miles north Cleveland OH · 134 MI 134 miles northwest Columbus OH · 158 MI 158 miles west Washington DC · 177 MI 177 miles southeast Baltimore MD · 187 MI 187 miles east
FORECASTCITY
Map of Fredericktown, Pennsylvania. Explore the plate
PENNSYLVANIA · WASHINGTON

Fredericktown

402 people, 810 ft above sea level in Washington County.

810 ftElevation
402People
1 sq miLand
Clear 40°
ClearDew point 30°
1

Today in Fredericktown

NEXT 15 HOURS
Now mostly cloudy night 39° 0%
9p mostly cloudy night 37° 2%
12a mostly cloudy night 36° 3%
3a mostly cloudy night 36° 2%
6a mostly cloudy night 37° 8%
9a mostly cloudy day 40° 7%
Clear
NEXT RAINNone this week
→
Sat0%
Mostly cloudy Mostly cloudy
32
39
A
Sun30%
Mostly cloudy; warmer Mostly cloudy; warmer
32
47
A
Mon0%
Mostly cloudy Mostly cloudy
26
50
A
Tue0%
Sunny Sunny
26
54
A
Wed0%
Sunny Sunny
28
58
B
Thu0%
Mostly sunny Mostly sunny
37
61
B
Fri0%
Mostly sunny Mostly sunny
37
62
C
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
THIS WEEK IN 1990 · NOV. 16, 1990

79°, the hottest this week of the year has been since 1948.

2

What Fredericktown stands on

Fredericktown’s center stands about 810 ft above sea level. Within three miles the land runs from 750 ft to 1,230 ft, a difference of 480 ft: hilly country. The highest named summit within 15 miles is Turkey Knob, about 1,480 ft, 11 miles south.

Fredericktown, west to east Fredericktown810 ftTenmile Creekabout 850 ft ← WE → 24 miles through the town center; vertical exaggeration about 54×. Colors: rock at the surface.
Elevation, center810 ft
Within 3 miles750 to 1,230 ft
Lie of the landHilly (480 ft of relief)
High point nearbyTurkey Knob, 1,480 ft, 11 mi south
5

Fredericktown’s year

Fredericktown has a warm-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 19° in January. A normal year brings about 30 inches of snow; with the rain, that comes to about 43 inches of water.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 43.1 in
July, average83° / 60° · high / low, the warmest month
January, average38° / 19° · high / low, the coldest month
Rain and melted snow43.1 in · wettest months: May and July
Snow a year30.1 in · snowiest: January
Hottest on record102°F · July 8, 2012
Coldest on record−25°F · January 20, 1994
Wettest day on record4.62 in · September 18, 2004
Snowiest day on record18.8 in · February 17, 2003
90° days a year10 · none reach 100°
Nights at or below 32°139 · and 27 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 4 (median dates)
2Lows below freezing · Nov. 6 to April 4; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 Fredericktown normally reaches 54° and falls to 30°. The record high is 75°, in 1989; the record low 8°, in 1986. The most rain on this date, 0.54 in, fell in 1997.

Normals 1991–2020 and records since 1948 at Waynesburg 1 E, 11 miles southwest, 130 ft higher. NOAA, through RCC-ACIS.
3

Where the rain goes

≈ 2,010 mito the Gulf of AmericaMonongahela → Ohio → Mississippi

A raindrop that lands in Fredericktown reaches the Gulf of America by way of the Monongahela, the Ohio and the Mississippi: about 2,010 river miles.

970 miles of the trip are on the Ohio.