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Upper Saint Clair, PA Weather
Current conditions
Observed at Pittsburgh - Allegheny County Airport · 50 min ago
Forecast
10-day-
Friday
Mostly sunny, with a high near 63. Northeast wind 2 to 6 mph.
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Friday Night
Clear, with a low around 37. East wind around 5 mph.
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Saturday
Sunny, with a high near 65. East wind around 2 mph.
National Weather Service forecast updated 22 hrs ago.
Hourly
Hourly forecast- Now59°
- 2 PM61°
- 3 PM62°
- 4 PM62°
- 5 PM62°
- 6 PM60°
- 7 PM56°
- 8 PM50°
- 9 PM48°
- 10 PM46°
- 11 PM46°
- Sat12 AM44°
- 1 AM43°
- 2 AM43°
- 3 AM40°
- 4 AM39°
- 5 AM38°
- 6 AM38°
- 7 AM37°
- 8 AM37°
- 9 AM40°
- 10 AM47°
- 11 AM53°
- 12 PM56°
Daily forecast
DetailsRadar
Full mapWeather news in Pennsylvania
More weather news-
Seasonable sunshine and temperatures continue throughout the week in south central PennsylvaniaAt or above average temperatures and 10 days of dry weather ahead. Tuesday looks to be the warmest day of the workweek. Expect bright blue skies and highs climbing to around 70 degrees. From Wednesday through Friday…
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Impact: Frost & freeze alerts issued for some on Sunday night; sunny stretch next week in south central PennsylvaniaAnother chilly and frosty night across south central Pennsylvania with lows dropping into the 30s. The National Weather Service has issued freeze warnings and frost advisories for parts of the Susquehanna Valley where…
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Freeze Watch Upgraded to Warning for Almost All of Pennsylvania as Conditions WorsenFreeze Warnings are now in effect for most of Pennsylvania from 1 a.m. to 9 a.m. EDT Sunday, with lows between 25 and 30 degrees expected in central Pennsylvania. The earlier Freeze Watches have been upgraded to…
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Freeze warning in Pennsylvania after wet Saturday | NEXT WeatherCBS News Freeze warning in Pennsylvania after wet Saturday | NEXT Weather Philadelphia region sees more than 20-degree drop in temperatures Saturday Camden Catholic beats Kipp Cooper Norcross and more in Week 6 of…
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Pennsylvania weather: Cold, cloudy, breezy in upper 40sAlert!: Freeze watch Saturday night through Sunday morning (WBRE/WYOU) — Skies will clear and winds will diminish Saturday night with high pressure moving overhead. The clear sky and light winds will allow for cooling…
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Freeze Warning issued for all of western Pennsylvania as overnight temperatures will dropOctober 17, 2026 / 6:59 AM EDT / CBS Pittsburgh There are a few showers this morning, but clouds will quickly clear out this afternoon with sunshine and highs well below normal at 50 degrees. Overnight, we are going…
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Freeze watch from Saturday night through Sunday morning in Western PennsylvaniaThe National Weather Service has issued a freeze watch for counties across Western Pennsylvania from late Saturday night through early Sunday morning. Temperatures as low as 30 degrees are possible in some areas. Frost…
- Weather Forecast and Conditions for Martins Creek, 18063, Bangor, Pennsylvania - The Weather Channel
Martins Creek Weather The Weather Channel Martins Creek, 18063, Bangor, Pennsylvania Martins Creek Daily Forecast
- Freeze watch issued for all of south-central Pennsylvania ahead of plunging temperatures
The National Weather Service has issued a freeze watch for all of south-central Pennsylvania from 1 a.m. to 9 a.m. Sunday. The cold could produce the region’s first widespread frost or freeze of the season. The NWS…
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Early map of Pennsylvania from circa 1681Mostly cloudy with some scattered evening showers; breezy and turning much cooler and less humid overnight. . Bulletin: SEVERE THUNDERSTORM WATCH 686 REMAINS VALID UNTIL 8 PM EDT THIS EVENING FOR THE FOLLOWING AREAS IN…
Air quality
People with heart or lung disease, older adults, children and teenagers should reduce prolonged or heavy exertion outdoors.
Forecast
- FriModerate (60)
- SatModerate (65)
- SunModerate
Mon Valley Area, PA reporting area · 2 hrs ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyPittsburgh Area, records since 1875. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Pittsburgh 14 km
- Mount Lebanon 4 km
- Bethel Park 4 km
- Monroeville 27 km
- Cranberry Township 39 km
- Plum 34 km
- Allison Park 27 km
- Murrysville 34 km
- West Mifflin 19 km
- Baldwin 9 km
- McKeesport 19 km
- Weirton Heights 39 km
Forecasters' discussion
From the National Weather Service office in PBZ, issued 5 hrs ago
What Has Changed
Updated for the 06z TAF issuance.
Key Messages
1) Quiet, dry weather continues through late next week
Discussion
KEY MESSAGE 1... Broad surface high pressure will maintain dry and mostly sunny conditions through much next week. The potential for frost and freeze products remains low over the next few days as a flux of low-level moisture returns to the region; overnight lows will range from the low-40s to upper-30s.
The probability of precipitation remains low (below 10%) through next Thursday with little to no change in our large-scale weather pattern.
Aviation
High-confidence VFR continues into early next week. The lone exceptions will be morning instances of river valley fog that will continue to plague mainly HLG and FKL with 1-2 hour windows of IFR/LIFR visibility. Also today, there is just enough moisture to support some isolated to scattered diurnal cumulus between 3k and 4k feet. A light northeast wind will prevail today.
Outlook... Outside of any morning river valley fog, VFR is highly likely through Tuesday under high pressure.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.