FORECAST CITY
Sign in
Shaded-relief atlas plate of South Fayette, Pennsylvania: rivers, roads, the city limits and where the water drains.
PENNSYLVANIA · ALLEGHENY COUNTY

South Fayette

18,586 people, 1,070 ft above sea level in Allegheny County.

1,070 ftElevation, city center
18,586People, 2024 estimate
20 sq miLand area
Sunny 69°
Sunny now Dew point 57° · WSW 3 mph · high 72°
City of South Fayette River Interstate 2 miles
Explore the plate Order a print

The South Fayette 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 South Fayette

NWS forecast and National Blend of Models · updated 4:00 PM EDT
RIGHT NOW Pittsburgh International Airport (KPIT) · 3:51 PM
Sunny
69° Sunny Feels like 69° · high of 72° near 4 PM
WindWSW 3 mphno gusts
Humidity65%rising to 100% by morning
Pressure30.07 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 57° · Comfortableabout the same for three days
DryComfortableStickyMuggyOppressive
NEXT RAIN
Mostly cloudy
Friday, about 9 AMin about 64 hours · 85% chance · rain
LIKELY AMOUNT0.2–0.6 inmost likely 0.3; 1 in 10 over 1
LAST RAINSept. 220.05 in · 7 dry days
ALERTS & OUTLOOKS
No watches or warnings for Allegheny County
NWS Pittsburgh and the Storm Prediction Center · checked 4:56 PM
SUN & MOON
↑ 7:14 AM7:07 PM ↓
11 h 52 m of daylight, 3 minutes less than yesterday
Waning gibbous, 88% lit. The Harvest Moon was full Saturday.
AIR & POLLEN
51
MODERATEAir quality index · fine particles
Tomorrow: 56, moderate. No pollen source yet.

The next three days, hour by hour

Sky: clear, cloudy, night Rain likely National Blend of Models
TUESDAY, SEPT. 29
WEDNESDAY, SEPT. 30
THURSDAY, OCT. 1
FRIDAY, OCT. 2
4p
7p
10p
1a
4a
7a
10a
1p
4p
7p
10p
1a
4a
7a
10a
1p
4p
7p
10p
1a
4a
7a
10a
1p
partly cloudy day
mostly clear night
mostly clear night
mostly clear night
partly cloudy night
partly cloudy day
partly cloudy day
partly cloudy day
mostly cloudy day
mostly cloudy night
mostly cloudy night
mostly cloudy night
partly cloudy night
partly cloudy day
mostly sunny
partly cloudy day
partly cloudy day
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy night
mostly cloudy day
rain
rain
TEMPERATURE °F
72°
54°
75°
63°
77°
67°
CHANCE OF RAIN
85% · 0.08 in Friday afternoon 50%
WIND, MPH
3
5
3
0
0
0
5
6
6
5
5
5
6
7
9
12
10
8
8
9
10
10
12
13
HOW IT FEELS · DEW POINT
Comfortable: dew points 54 to 63°

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 70° / 50°
TUE Sept. 29 Partly cloudy Partly cloudy
72° 54°
0% rain — SW 3 A
WED Sept. 30 Partly cloudy Partly cloudy
77° 63°
10% rain — SW 4 A
THU Oct. 1 Partly cloudy Partly cloudy
80° 66°
10% rain — SW 10 B
FRI Oct. 2 Showers likely Showers likely
75° 52°
80% rain 0.2–0.6″ N 12 C
SAT Oct. 3 Partly cloudy; cooler Partly cloudy; cooler
67° 51°
20% rain — NE 7 B
SUN Oct. 4 Partly cloudy Partly cloudy
68° 49°
30% rain — WNW 7 B
MON Oct. 5 Mostly sunny Mostly sunny
63° 41°
0% rain — N 10 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

MILE7
ON THE NETWORK

Around South Fayette on the Forecast Network

Neighboring plates

Pittsburgh PA · 12 MI 12 miles northeast Hempfield PA · 32 MI 32 miles east Cleveland OH · 110 MI 110 miles northwest Columbus OH · 151 MI 151 miles west Washington DC · 197 MI 197 miles southeast Toledo OH · 199 MI 199 miles northwest
FORECASTCITY
Atlas plate of South Fayette, Pennsylvania. Explore the plate
PENNSYLVANIA · ALLEGHENY

South Fayette

18,586 people, 1,070 ft above sea level in Allegheny County.

1,070 ftElevation
18,586People
20 sq miLand
Sunny 69°
SunnyDew point 57°
1

Today in South Fayette

NEXT 15 HOURS
Now partly cloudy day 72° 0%
7p mostly clear night 67° 0%
10p mostly clear night 61° 0%
1a mostly clear night 58° 0%
4a mostly clear night 55° 0%
7a partly cloudy day 54° 0%
Mostly cloudy
NEXT RAINFriday about 9 AM · 85%
→
Tue0%
Partly cloudy Partly cloudy
54
72
A
Wed10%
Partly cloudy Partly cloudy
63
77
A
Thu10%
Partly cloudy Partly cloudy
66
80
B
Fri80%
Showers likely Showers likely
52
75
C
Sat20%
Partly cloudy; cooler Partly cloudy; cooler
51
67
B
Sun30%
Partly cloudy Partly cloudy
49
68
B
Mon0%
Mostly sunny Mostly sunny
41
63
C
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
·