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

Deerfield

257 people, 1,820 ft above sea level in Warren County.

1,820 ftElevation, city center
257People, 2024 estimate
43 sq miLand area
Sunny 36°
Sunny now Dew point 36° · WNW 14 mph · high 39°
City of Deerfield River Interstate 2 miles
Explore the plate Order a print

The Deerfield 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 Deerfield

NWS forecast and National Blend of Models · updated 3:00 PM EST
RIGHT NOW Chautauqua County/Jamestown Airport (KJHW) · 2:56 PM
Sunny
36° Sunny Feels like 27° · high of 39° near 3 PM
WindWNW 14 mphno gusts
Humidity100%rising to 100% by morning
Pressure29.90 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 11 PMin about 7 hours · 31% chance · rain
LIKELY AMOUNT—amounts come within 3 days
LAST RAINNov. 130.21 in · 1 dry day
ALERTS & OUTLOOKS
No watches or warnings for Warren County
NWS State College and the Storm Prediction Center · checked 3:47 PM
SUN & MOON
↑ 7:05 AM4:58 PM ↓
9 h 53 m of daylight, 2 minutes less than yesterday
Waxing crescent, 25% lit. Next full moon: Nov. 24.
AIR & POLLEN
25
GOODAir quality index · ozone
Tomorrow: 15, 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
3p
6p
9p
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mostly cloudy day
mostly cloudy night
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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
partly cloudy night
mostly clear night
mostly clear night
mostly clear night
mostly sunny
mostly sunny
clear day
TEMPERATURE °F
39°
33°
40°
34°
43°
30°
CHANCE OF RAIN
31% · 0.01 in Saturday night 50%
WIND, MPH
10
10
9
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HOW IT FEELS · DEW POINT
Dry: dew points 30 to 38° ↑ Humid air returns More humid: 38° 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 Chance of showers Chance of showers
39° 31°
30% rain — NW 10 A
SUN Nov. 15 Mostly cloudy Mostly cloudy
42° 32°
30% rain — NNW 7 A
MON Nov. 16 Mostly cloudy Mostly cloudy
45° 28°
0% rain — NW 4 A
TUE Nov. 17 Sunny Sunny
50° 28°
0% rain — SW 2 B
WED Nov. 18 Mostly sunny Mostly sunny
53° 31°
0% rain — S 3 B
THU Nov. 19 Partly cloudy Partly cloudy
56° 39°
0% rain — SSW 6 B
FRI Nov. 20 Partly cloudy Partly cloudy
57° 39°
0% rain — SW 1 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 Deerfield about 5,000 feet above the ground was over British Columbia three days ago, and over Ontario a day ago, about 2,470 miles back along its path. Near the ground the air came from British Columbia; at 10,000 feet, from the Gulf of Alaska. 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, SIX YEARS AGO Nov. 11, 2020

The hottest this week has been

76° on Nov. 11, 2020, the hottest reading for this week of the year since 1893. Next is 74° in 1896.

74°
76°
18962020
Source: NOAA RCC-ACIS, the Warren record since 1893.
MILE2
THE GROUND

What Deerfield stands on

Deerfield’s center stands about 1,820 ft above sea level. Within three miles the land runs from 1,110 ft to 1,880 ft, a difference of 770 ft: hilly country. The highest named summit within 15 miles is Jackson Hill, about 1,980 ft, 10 miles northwest.

The section below crosses 6 rock units mapped at the surface.

Deerfield, cut in half from northwest to southeast

A section northwest to southeast, 24 miles through the town center
1,250 ft1,500 ft1,750 ft DEERFIELD1,820 ftAllegheny Riverabout 1,110 ftHigh point of the line2,000 ft ← NWCherry Grove · 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

Pottsville Formation

Sandstone, conglomerate. Age: Carboniferous, 299 to 324 million years old. About 8 mi of the line.

Shenango Formation through Cuyahoga Group, undivided

Sandstone, siltstone. Age: Carboniferous, 324 to 359 million years old. About 8 mi of the line.

Corry Sandstone through Riceville Formation, undivided

Sandstone, shale. Age: Late Devonian, 359 to 384 million years old. About 5 mi of the line.

Cuyahoga Group

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

Venango Formation

Siltstone, conglomerate. Age: Late Devonian, 359 to 384 million years old. About 0.9 mi of the line.

Shenango Formation

Sandstone. Age: Carboniferous, 324 to 359 million years old. About 0.4 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 Deerfield’s rain goes

A raindrop that lands in Deerfield reaches the Gulf of America by way of Connelly Run, the Allegheny, the Ohio and the Mississippi: about 2,120 river miles.

THE WAY DOWN, TO SCALE
Deerfield≈ 2,120 mi · the Gulf of America
FROM THE CENTER OF DEERFIELD ≈ 2,120 mi to the Gulf of America Connelly Run → 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 Deerfield; river miles along the main stem, rounded.

MILE5
THE ALMANAC

Deerfield’s year

1991–2020 normals · records since 1893 · Warren, 14 mi northeast

Deerfield has a warm-summer humid continental climate. Summer afternoons average 81° in July; winter nights fall to about 18° in January. A normal year brings about 72 inches of snow; with the rain, that comes to about 47 inches of water.

32°18°35°18°44°24°58°34°70°45°77°55°81°59°80°58°74°52°61°41°48°32°37°24° JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 123 TODAY DEERFIELD 47.0 in rain and snowmelt
Normal high to low, by month Record high to low, by day Rain by month Freezing
July, average81° / 59°high / low, the warmest month
January, average32° / 18°high / low, the coldest month
Rain and melted snow47.0 inwettest months: July and June
Snow a year71.6 insnowiest: December
Hottest on record102°FJuly 23, 2011
Coldest on record−34°FFebruary 11, 1979
Wettest day on record4.66 inOctober 16, 1954
Snowiest day on record17.0 inJanuary 1, 1949
90° days a year7none reach 100°
Nights at or below 32°142and 47 days that stay below freezing
Climate typeWarm-summer humid continentalKöppen Dfb

AROUND THE RING

1Freeze seasonfrom the first fall freeze, about Oct. 18, to the last in spring, about May 9 (median dates)
2Highs below freezingJan. 11 to Jan. 28; normal highs stay below 32°
3Lows below freezingNov. 14 to April 10; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 Deerfield normally reaches 48° and falls to 32°. The record high is 69°, in 1989; the record low 6°, in 1920. The most rain on this date, 1.27 in, fell in 1972.

MONTH BY MONTH
JanFebMarAprMayJunJulAugSepOctNovDec
Normal high32°35°44°58°70°77°81°80°74°61°48°37°
Normal low18°18°24°34°45°55°59°58°52°41°32°24°
Rain and melt, in3.642.773.264.134.294.664.764.073.954.023.623.81
Snow, inches18.214.910.02.40.00.00.00.00.00.17.518.5
Record high74° (1950)74° (2017)83° (2012)92° (1976)95° (1914)98° (1905)102° (2011)100° (1988)100° (1953)90° (1949)84° (1950)74° (1982)
Record low−26° (1904)−34° (1979)−18° (1980)0° (1923)20° (1905)29° (1980)36° (1925)35° (1925)26° (1957)14° (2008)1° (1924)−22° (1917)

Normals 1991–2020 and records since 1893 at Warren, 14 miles northeast, 610 ft lower. NOAA, through RCC-ACIS.

MILE7
ON THE NETWORK

Around Deerfield on the Forecast Network

Neighboring plates

Jamestown NY · 26 MI 26 miles north Buffalo NY · 84 MI 84 miles north Pittsburgh PA · 95 MI 95 miles south Cleveland OH · 121 MI 121 miles west Detroit MI · 197 MI 197 miles west
FORECASTCITY
Map of Deerfield, Pennsylvania. Explore the plate
PENNSYLVANIA · WARREN

Deerfield

257 people, 1,820 ft above sea level in Warren County.

1,820 ftElevation
257People
43 sq miLand
Sunny 36°
SunnyDew point 36°
1

Today in Deerfield

NEXT 15 HOURS
Now mostly cloudy day 39° 0%
6p mostly cloudy night 37° 9%
9p mostly cloudy night 36° 20%
12a mostly cloudy night 34° 27%
3a mostly cloudy night 33° 18%
6a mostly cloudy night 33° 21%
Mostly cloudy
NEXT RAINTonight about 11 PM · 31%
→
Sat30%
Chance of showers Chance of showers
31
39
A
Sun30%
Mostly cloudy Mostly cloudy
32
42
A
Mon0%
Mostly cloudy Mostly cloudy
28
45
A
Tue0%
Sunny Sunny
28
50
B
Wed0%
Mostly sunny Mostly sunny
31
53
B
Thu0%
Partly cloudy Partly cloudy
39
56
B
Fri0%
Partly cloudy Partly cloudy
39
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

76°, the hottest this week of the year has been since 1893.

2

What Deerfield stands on

Deerfield’s center stands about 1,820 ft above sea level. Within three miles the land runs from 1,110 ft to 1,880 ft, a difference of 770 ft: hilly country. The highest named summit within 15 miles is Jackson Hill, about 1,980 ft, 10 miles northwest.

Deerfield, northwest to southeast Deerfield1,820 ftAllegheny Riverabout 1,110 ft ← NWSE → 24 miles through the town center; vertical exaggeration about 41×. Colors: rock at the surface.
Elevation, center1,820 ft
Within 3 miles1,110 to 1,880 ft
Lie of the landHilly (770 ft of relief)
High point nearbyJackson Hill, 1,980 ft, 10 mi northwest
5

Deerfield’s year

Deerfield has a warm-summer humid continental climate. Summer afternoons average 81° in July; winter nights fall to about 18° in January. A normal year brings about 72 inches of snow; with the rain, that comes to about 47 inches of water.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 123 47.0 in
July, average81° / 59° · high / low, the warmest month
January, average32° / 18° · high / low, the coldest month
Rain and melted snow47.0 in · wettest months: July and June
Snow a year71.6 in · snowiest: December
Hottest on record102°F · July 23, 2011
Coldest on record−34°F · February 11, 1979
Wettest day on record4.66 in · October 16, 1954
Snowiest day on record17.0 in · January 1, 1949
90° days a year7 · none reach 100°
Nights at or below 32°142 · and 47 days that stay below freezing
Climate typeWarm-summer humid continental · Köppen Dfb
1Freeze season · from the first fall freeze, about Oct. 18, to the last in spring, about May 9 (median dates)
2Highs below freezing · Jan. 11 to Jan. 28; normal highs stay below 32°
3Lows below freezing · Nov. 14 to April 10; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 Deerfield normally reaches 48° and falls to 32°. The record high is 69°, in 1989; the record low 6°, in 1920. The most rain on this date, 1.27 in, fell in 1972.

Normals 1991–2020 and records since 1893 at Warren, 14 miles northeast, 610 ft lower. NOAA, through RCC-ACIS.
3

Where the rain goes

≈ 2,120 mito the Gulf of AmericaConnelly Run → Allegheny → Ohio → Mississippi

A raindrop that lands in Deerfield reaches the Gulf of America by way of Connelly Run, the Allegheny, the Ohio and the Mississippi: about 2,120 river miles.

970 miles of the trip are on the Ohio.