WEST MIFFLIN, PA 15123 Weather Forecast & Current Conditions

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ALLEGHENY CO. ARPT, PA
Current Weather

11:53 AM EDT MAY 15, 2026
Few Clouds
59°F
Feels Like: 58°F
Dewpoint: 41°F
Rel. Hum.: 51%
Visibility: 10 miles
Wind: W at 8 mph
Pressure: 30.08 inches
Last 72 hours

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WEST MIFFLIN, PA 15123
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
THIS AFTERNOON
Partly sunny. Highs in the upper 60s. West winds 5 to 10 mph.
TONIGHT
Partly cloudy. Lows around 50. South winds around 5 mph.
SATURDAY
Mostly sunny in the morning, then mostly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent.
SATURDAY NIGHT
Considerable cloudiness. Showers likely with a chance of thunderstorms in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. Warm. More humid with lows in the lower 60s. Southwest winds 10 to 15 mph. Chance of rain 70 percent.
SUNDAY
Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers. A chance of thunderstorms in the afternoon. Warm with highs in the lower 80s. Southwest winds around 5 mph. Chance of rain 40 percent.
SUNDAY NIGHT
Mainly clear. A chance of showers and thunderstorms in the evening. Warm with lows in the mid 60s. Chance of rain 40 percent.
MONDAY
Sunny. Unseasonably warm with highs in the upper 80s.
MONDAY NIGHT
Mainly clear. Warm with lows in the upper 60s.
TUESDAY
Mostly sunny. Hot with highs in the lower 90s.
TUESDAY NIGHT
Mostly cloudy with a chance of showers. Warm with lows in the upper 60s. Chance of rain 50 percent.
WEDNESDAY
Partly sunny with a chance of showers in the morning, then mostly cloudy with showers likely with a chance of thunderstorms in the afternoon. Warm with highs in the lower 80s. Chance of rain 70 percent.
WEDNESDAY NIGHT
A chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows in the upper 50s. Chance of rain 50 percent.
THURSDAY
Partly sunny. Highs in the lower 70s.

Visible Weather Satellite
WEST MIFFLIN, PA 15123
Infrared Weather Satellite
WEST MIFFLIN, PA 15123
NEXRAD Weather Radar
WEST MIFFLIN, PA 15123

ALLEGHENY CO. ARPT, PA 3 hourly weather forecast

weather forecast created  7:00 PM CDT  5/14/2026
Friday
15 MAY 2026
WEST MIFFLIN, PA 15123 weather forecast Day 1, 0 hours 2 AM 46° 42° Partly Cloudy 0%

0% Thunder
( 0% severe)
WNW   8 65% 35°
Low 42° WEST MIFFLIN, PA 15123 weather forecast Day 1, 3 hours 5 AM 43° 39° Clear WNW   7 73% 35°
High 68° WEST MIFFLIN, PA 15123 weather forecast Day 1, 6 hours 8 AM 47° 44° Clear 0%

0% Thunder
( 0% severe)
NW   7 68% 37°

Increasing Clouds



WEST MIFFLIN, PA 15123 weather forecast Day 1, 9 hours 11 AM 59° 58° Clear NW   7 47% 39°
WEST MIFFLIN, PA 15123 weather forecast Day 1, 12 hours 2 PM 66° 66° Mostly Cloudy 3%

0% Thunder
( 1% severe)
WNW   7 38% 40°
WEST MIFFLIN, PA 15123 weather forecast Day 1, 15 hours 5 PM 68° 68° Mostly Cloudy W   7 35% 39°
WEST MIFFLIN, PA 15123 weather forecast Day 1, 18 hours 8 PM 64° 65° Mostly Cloudy 2%

0% Thunder
( 1% severe)
W   5 41% 40°
WEST MIFFLIN, PA 15123 weather forecast Day 1, 21 hours 11 PM 55° 54° Partly Cloudy SW   5 55% 39°
Saturday
16 MAY 2026
WEST MIFFLIN, PA 15123 weather forecast Day 2, 0 hours 2 AM 51° 49° Partly Cloudy 2%

0% Thunder
( 1% severe)
S   6 63% 39°
Low 50° WEST MIFFLIN, PA 15123 weather forecast Day 2, 3 hours 5 AM 50° 47° Partly Cloudy S   7 63% 38°
High 79° WEST MIFFLIN, PA 15123 weather forecast Day 2, 6 hours 8 AM 56° 54° Partly Cloudy 2%

0% Thunder
( 3% severe)
S   8 57% 41°

Mostly Cloudy

Chance of Rain

WEST MIFFLIN, PA 15123 weather forecast Day 2, 9 hours 11 AM 70° 70° Partly Cloudy S   10 42% 46°
WEST MIFFLIN, PA 15123 weather forecast Day 2, 12 hours 2 PM 77° 78° Mostly Cloudy 25%
RAIN
.5–1 in
0% Thunder
( 21% severe)
SW   14 40% 51°
WEST MIFFLIN, PA 15123 weather forecast Day 2, 15 hours 5 PM 78° 79° Mostly Cloudy SW   14 43% 54°
WEST MIFFLIN, PA 15123 weather forecast Day 2, 18 hours 8 PM 73° 73° Mostly Cloudy 49%
RAIN
>2 in
0% Thunder
( 21% severe)
SW   10 57% 57°
WEST MIFFLIN, PA 15123 weather forecast Day 2, 21 hours 11 PM 67° 67° Mostly Cloudy SSW   8 70% 57°

ALLEGHENY CO. ARPT, PA extended weather forecast

Sunday
17 MAY 2026
Monday
18 MAY 2026
Tuesday
19 MAY 2026
Wednesday
20 MAY 2026
Thursday
21 MAY 2026
Low 60° Low 64° Low 66° Low 64° Low 52°
High 80° High 89° High 85° High 76° High 68°
WEST MIFFLIN, PA 15123 weather forecast Day 3 WEST MIFFLIN, PA 15123 weather forecast Day 4 WEST MIFFLIN, PA 15123 weather forecast Day 5 WEST MIFFLIN, PA 15123 weather forecast Day 6 WEST MIFFLIN, PA 15123 weather forecast Day 7
Overcast
76% Rain
Partly Cloudy
28% Rain
Partly Cloudy
56% Rain
Overcast
82% Rain
Overcast
42% Rain
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