Citizen station GW8029GW8029
In a volunteer observer's own ground/4.9 mi away/1,155 ft/72 ft above here
temp, humidity, wind, precip, pressure
Weather/Pennsylvania/South Greensburg
South Greensburg, Pennsylvania
* WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...In Pennsylvania, Fayette, Greene, Washington, and Westmoreland Counties. In West Virginia, Marion, Monongalia, Ridges of Eastern Monongalia and Northwestern Preston, Wetzel, and Marshall Counties. * WHEN...From 2 AM to 9 AM EDT Tuesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Take steps now to protect tender plants from the cold.
44°
68°/38°
Clear·
Feels like 44°·Calm 0 mph NNW
Alert. A Frost Advisory is in force for South Greensburg until 9 AM today. Read the alert in full, and see what it means in the Field Book.
Now. South Greensburg is 44° and clear at 12 AM. The dew point is 37°, so the air feels dry and comfortable. The air is calm.
Today and tonight. It warms to about 64° by 3 PM. Tonight falls to about 38° by 8 AM, under a mostly clear sky. No rain is expected for the rest of the day.
The week. The warmest day ahead is Sunday, near 68°, and the coolest Friday, near 62°. The days ahead look dry. Frost is possible Saturday morning, a low of 36°.
The sky tonight. The sun sets at 6:31 PM. The Moon is a waxing gibbous, 70% lit, and sets at 2:40 AM after midnight. The next full Moon is Monday, Oct 26. After dark, look for Saturn, bright in the east-southeast. A planet shines with a steady light where the stars around it twinkle. The Orionids meteor shower is active, peaking around Oct 21: at its peak, up to about 20 meteors an hour can be seen from a dark site. The bright Moon hides all but the brightest of them. The sky is forecast to stay clear: a good night to look up. The day is 10 hours 58 minutes long, 2 minutes shorter than yesterday.
0UV Low
46Air quality
81%Humidity
0%Cloud
Now
12:00 AM
44feels44
now, clear
Today
Oct 20
6838
clear
Wed
Oct 21
6637
clear
Thu
Oct 22
6537
mostly clear
Fri
Oct 23
6239
clear
Sat
Oct 24
6536
clear
Sun
Oct 25
6838
clear
Mon
Oct 26
6744
partly cloudy
As of 12:00 AM in South Greensburg, Pennsylvania.
Air quality
The air at South Greensburg
Index 46, good, led by fine particles. Read at 12 AM from its reporting area, Mon Valley Area (PA), 17 miles off.
46Good
- Fine particles (PM2.5)46Good2.9 mi
- Ozone-9 ppb2.9 mi
The days ahead
Highest 101, unhealthy for sensitive groups, today, led by fine particles. An air quality alert is called for today. Yesterday measured 70, moderate.
GoodModerateSensitive groups
- 70YesterdayOct 19
- 101TodayOct 20Alert
- 75WedOct 21
- ModerateThuOct 22
Smoke, the next 45 hours
No smoke near the ground through Wed 8 PM.
Precipitation
What has fallen at South Greensburg
None in the last 24 hours; 0.08 in over the last 3 days, to Mon 11 PM. Measured by radar and rain gauges, as water.
- Last 24 hours
- 0.00in
- Last 3 days
- 0.08in
3 days agoLast 24 hours 0%
Visibility
How far you can see at South Greensburg, the next 45 hours
Visibility stays 10 miles or more through Wed 8 PM.
F
Now, today, and the week
On the radar over South Greensburg, PennsylvaniaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture
Weather instrument stations by state
What is measuring near here
The 6 instruments nearest South Greensburg, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.9 miles away.
measured now4 instruments
Rank1,108of 1,379
At an airfield/7.4 mi away/1,184 ft/101 ft above here
temp, wind, gust, visibility, precip, pressure
Loyalhanna Creek Lake03046500
At a river or reservoir gauge/13.3 mi away/-/- ft from here
temp, wind, gust, humidity, pressure
I-70 E/B @ MM 48 Youghiogheny Ri PA US PADOTPA059
Beside a road/13.6 mi away/879 ft/204 ft below here
temp, pavement temp, wind, visibility, precip
measured daily2 instruments
Greensburg 3.1 SPA-WT-91
In a volunteer observer's own ground/0.9 mi away/1,140 ft/57 ft above here
precip, snowfall, snow depth
New StantonNSTP1
At a cooperative observer's station/6.6 mi away/948 ft/135 ft below here
snowfall, snow depth, precip, high, low
Station report
The weather at Latrobe/Westmorland, drawn
The nearest airport reporting now, 7.4 mi from South Greensburg, Pennsylvania. From its report of Oct 19, 2026, 11:55 PM local time: 3 of its 6 sheets.
What the snow tracker reads here
Every instrument in this state
-
Snow on the ground
Elsewhere in Pennsylvania
24 places, each with its own forecast and its own instruments.
Allegheny National ForestfeatureAllentowncityAltoonacityBlue Mountainski areaCamelbackski areaElk Mountainski areaEriecityHarrisburgcityJack Frost Big Boulderski areaJohnstowncityLaurel Ridge State ParkfeatureLiberty Mountainski areaMontage Mountainski areaPhiladelphiacityPittsburghcityRoundtopski areaScrantoncitySeven Springsski areaShawnee Mountainski areaState CollegetownStroudsburgtownWhitetailski areaWilkes BarrecityWilliamsportcity
Near South Greensburg
The nearest places, each with its own forecast and the instruments nearest it.
- Southwest Greensburgborough, 1 mi
- Greensburgcity, 2 mi
- Youngwoodborough, 3 mi
- Grapevillecommunity, 5 mi
- Jeannettecity, 5 mi
- Calumetcommunity, 5 mi
- New Stantonborough, 5 mi
- Norveltcommunity, 6 mi
- Aronaborough, 6 mi
- Adamsburgborough, 6 mi
- Pennborough, 6 mi
- Hunkerborough, 6 mi