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Severe Thunderstorms and Heavy Rainfall; Typhoon Watch in Guam and CNMI

Heavy to excessive rainfall will continue through tonight from the Texas Big Bend region into southern Oklahoma. Scattered damaging wind gusts and a few tornadoes may accompany a line of severe thunderstorms that is expected across the Mid-Atlantic into New England Friday. A Typhoon Watch continues for Guam and CNMI as Tropical Storm Champi will strengthen and approach the islands this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Pittsburgh/Butler Regional Airport (KBTP)

Lat: 40.78°NLon: 79.96°WElev: 1248ft.

Overcast

67°F

19°C

Humidity 100%
Wind Speed S 7 mph
Barometer 29.86 in (1011.1 mb)
Dewpoint 67°F (19°C)
Visibility 8.00 mi
Last update 16 Oct 2:56 am EDT
Extended Forecast for

Tarentum PA

  • Overnight

    Overnight: Showers likely and possibly a thunderstorm before 4am, then scattered showers and thunderstorms, mainly between 4am and 5am. Mostly cloudy, with a low around 62. South wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Showers
    Likely

  • Friday

    Friday: Showers and thunderstorms before 4pm, then scattered showers. Temperature rising to near 73 by 11am, then falling to around 61 during the remainder of the day. Southwest wind 14 to 18 mph becoming west in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F⇓

    Showers
    Likely then
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly between 10pm and midnight. Cloudy, then gradually becoming partly cloudy, with a low around 39. West wind 11 to 13 mph becoming north after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Showers
    Likely then
    Isolated
    Showers

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 53. North wind 11 to 14 mph.

    High: 53 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Widespread frost, mainly after 3am. Otherwise, clear, with a low around 31. Northwest wind around 5 mph becoming calm in the evening.

    Low: 31 °F

    Frost

  • Sunday

    Sunday: Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 60.

    High: 60 °F

    Frost then
    Sunny

  • Sunday Night

    Sunday Night: Areas of frost after 4am. Otherwise, clear, with a low around 34.

    Low: 34 °F

    Clear then
    Areas Frost

  • Monday

    Monday: Areas of frost before 9am. Otherwise, sunny, with a high near 66.

    High: 66 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Overnight
Showers likely and possibly a thunderstorm before 4am, then scattered showers and thunderstorms, mainly between 4am and 5am. Mostly cloudy, with a low around 62. South wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and thunderstorms before 4pm, then scattered showers. Temperature rising to near 73 by 11am, then falling to around 61 during the remainder of the day. Southwest wind 14 to 18 mph becoming west in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers likely, mainly between 10pm and midnight. Cloudy, then gradually becoming partly cloudy, with a low around 39. West wind 11 to 13 mph becoming north after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 53. North wind 11 to 14 mph.
Saturday Night
Widespread frost, mainly after 3am. Otherwise, clear, with a low around 31. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 60.
Sunday Night
Areas of frost after 4am. Otherwise, clear, with a low around 34.
Monday
Areas of frost before 9am. Otherwise, sunny, with a high near 66.
Monday Night
Mostly clear, with a low around 36.
Tuesday
Sunny, with a high near 68.
Tuesday Night
Mostly clear, with a low around 38.
Wednesday
Sunny, with a high near 68.
Wednesday Night
Mostly clear, with a low around 39.
Thursday
Sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tarentum PA
 40.61°N 79.75°W (Elev. 833 ft)
Last Update:
2:21 am EDT Oct 16, 2026
Forecast Valid:
3am EDT Oct 16, 2026-6pm EDT Oct 22, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation