Saint Clair, PA Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

26°F
Feels Like 26°F  
Humidity 69% Dew Point 17°F Wind Calm Barometer 29.92 in.
Report from a MADIS/MESONET weather station 2.5 mi. SSE of central Saint Clair
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Point Forecast at a Glance

ThuDec 11
Thu Dec 11: Partly Cloudy, Low 20F
 
20
FriDec 12
Fri Dec 12: Sunny, High 33F, Low 18F
33
18
SatDec 13
Sat Dec 13: Mostly Cloudy, High 37F, Low 21F
37
21
SunDec 14
Sun Dec 14: Partly Sunny, High 26F, Low 14F
26
14
MonDec 15
Mon Dec 15: Partly Sunny, High 28F, Low 17F
28
17
TueDec 16
Tue Dec 16: Mostly Sunny, High 31F, Low 21F
31
21
WedDec 17
Wed Dec 17: Mostly Cloudy, High 41F, Low 30F
41
30

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7-Day Temperature Trend

Week Ahead Summary

Variable high temperatures through the week, ranging from 26°F to 41°F. Mostly dry conditions with only one day showing snow chances.

Climate Context

This week's forecast shows temperatures running 6°F below the historical average for December. Normal highs for this period are around 41°F with lows around 25°F.

This Date in Weather History

1989 - Strong Santa Ana winds developed across southern California and parts of central California. Winds in Kern County of central California gusted to 100 mph near Grapevine. The high winds reduced visibilities to near zero in the desert areas, closing major interstate highways east of Ontario CA.

More on this and other weather history

Saint Clair, PA 7 Day Weather Forecast Details

Thursday Dec 11

Partly Cloudy

Night: Partly cloudy, with a low around 20. West wind around 5 mph.

Friday Dec 12

Sunny

Day: Sunny, with a high near 33. Northwest wind around 6 mph becoming calm in the afternoon.

Increasing Clouds

Night: Increasing clouds, with a low around 18. Calm wind.

Saturday Dec 13

Mostly Cloudy

Day: Mostly cloudy, with a high near 37. Calm wind becoming southwest around 6 mph in the afternoon.

Snow Showers Likely

Night: Snow showers likely. Cloudy, with a low around 21. Light northwest wind. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

Sunday Dec 14

Partly Sunny

Day: Partly sunny, with a high near 26.

Partly Cloudy

Night: Partly cloudy, with a low around 14.

Monday Dec 15

Partly Sunny

Day: Partly sunny, with a high near 28.

Mostly Cloudy

Night: Mostly cloudy, with a low around 17.

Tuesday Dec 16

Mostly Sunny

Day: Mostly sunny, with a high near 31.

Mostly Cloudy

Night: Mostly cloudy, with a low around 21.

Wednesday Dec 17

Mostly Cloudy

Day: Mostly cloudy, with a high near 41.

Mostly Cloudy

Night: Mostly cloudy, with a low around 30.

Thursday Dec 18

Showers

Day: A chance of showers. Mostly cloudy, with a high near 50. Chance of precipitation is 30%.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.