South New Castle, PA Weather Forecast and Current Conditions
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Current Weather
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Forecast at a Glance
This Date in Weather History
1975 - Strong winds reduced visibilities to near zero in blowing dust resulting in a 22-car chain reaction accident on Interstate 10 near Toltec AZ. Two persons were killed, and 14 others were injured.
More on this and other weather history
South New Castle 7 Day Weather Forecast Details
Friday Sep 5
Day: Areas of fog before 9am. Mostly sunny, with a high near 81. South wind 5 to 14 mph, with gusts as high as 26 mph.
Night: Rain showers likely after 8pm. Mostly cloudy, with a low around 53. West wind 2 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Saturday Sep 6
Day: Rain showers likely. Mostly cloudy, with a high near 68. West wind 2 to 6 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Night: A slight chance of rain showers before 8pm, then patchy fog. Partly cloudy, with a low around 46. Southwest wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Sunday Sep 7
Day: Patchy fog before 7am. Mostly sunny, with a high near 68.
Night: Areas of fog after 3am. Mostly clear, with a low around 41.
Monday Sep 8
Day: Areas of fog before 9am. Sunny, with a high near 71.
Night: Mostly clear, with a low around 44.
Tuesday Sep 9
Day: Sunny, with a high near 76.
Night: Mostly clear, with a low around 49.
Wednesday Sep 10
Day: Mostly sunny, with a high near 79.
Night: Partly cloudy, with a low around 51.
Thursday Sep 11
Day: Mostly sunny, with a high near 76.
Sun & Moon Monthly
Sunrise 6:53 AM
Sunset 7:49 PM
Last Light 8:17 PM
Moonset 4:08 AM
Contiguous United States Extremes
Thu's High Temperature
112 at Death Valley, CA and 16 Miles Southwest If Tecopa, CA
Thu's Low Temperature
28 at Peter Sinks, UT
Weather Folklore
Mist rising from the pond, fair weather tomorrow.
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About South New Castle, Pennsylvania
South New Castle is a borough in central Lawrence County, Pennsylvania, United States. The population was 649 at the 2020 census. It is primarily a residential community which lies south of the city of New Castle, and is part of the Pittsburgh metropolitan area. The borough will officially be annexed into nearby Shenango Township on January 1, 2026.
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