National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rainfall Threat Continues in the Southwest on Monday; Record Warmth in the Plains and Midwest

Remnant moisture from Tropical Storm Rachel will persist over portions of the Great Basin and Southwest on Monday, bringing a potential heavy to excessive rainfall risk. Well above average and potentially record breaking temperatures will develop across the Plains and Midwest early this week, spreading into the Lower Mississippi Valley and Southeast midweek. Read More >

Current conditions at

Pittsburgh/Butler Regional Airport (KBTP)

Lat: 40.78°NLon: 79.96°WElev: 1248ft.

A Few Clouds

69°F

21°C

Humidity 73%
Wind Speed SW 9 mph
Barometer 29.99 in (1015.6 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 12 Oct 3:56 pm EDT
Extended Forecast for

Arnold PASimilar City Names

  • Columbus Day

    Columbus Day: Mostly cloudy, with a high near 72. Southwest wind around 8 mph.

    High: 72 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 58. South wind around 7 mph.

    Low: 58 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 82. Southwest wind 9 to 15 mph.

    High: 82 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 64. Southwest wind 6 to 11 mph, with gusts as high as 23 mph.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm, then showers after 2pm. High near 77. Southwest wind 6 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers, mainly before 8pm. Low around 53. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 53 °F

    Showers then
    Slight Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 71.

    High: 71 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Showers, mainly after 8pm. Low around 59. Chance of precipitation is 80%.

    Low: 59 °F

    Showers

  • Friday

    Friday: Showers, mainly before 2pm. High near 70. Breezy. Chance of precipitation is 80%.

    High: 70 °F

    Showers and
    Breezy

Detailed Forecast

Columbus Day
Mostly cloudy, with a high near 72. Southwest wind around 8 mph.
Tonight
Partly cloudy, with a low around 58. South wind around 7 mph.
Tuesday
Sunny, with a high near 82. Southwest wind 9 to 15 mph.
Tuesday Night
Mostly clear, with a low around 64. Southwest wind 6 to 11 mph, with gusts as high as 23 mph.
Wednesday
Showers likely and possibly a thunderstorm, then showers after 2pm. High near 77. Southwest wind 6 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers, mainly before 8pm. Low around 53. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Partly sunny, with a high near 71.
Thursday Night
Showers, mainly after 8pm. Low around 59. Chance of precipitation is 80%.
Friday
Showers, mainly before 2pm. High near 70. Breezy. Chance of precipitation is 80%.
Friday Night
A chance of showers before 8pm. Mostly cloudy, with a low around 38. Breezy. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 54. Breezy.
Saturday Night
Mostly clear, with a low around 32.
Sunday
Sunny, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Arnold PASimilar City Names
 40.57°N 79.76°W (Elev. 860 ft)
Last Update:
2:21 pm EDT Oct 12, 2026
Forecast Valid:
4pm EDT Oct 12, 2026-6pm EDT Oct 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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