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

Severe Thunderstorms and Heavy Rainfall in the Ohio Valley and Great Lakes; Winter Weather in the Northern Tier

A slow moving front extending from the Great Lakes region into the Plains will bring snow, wintry mix, and ice accumulation north of the front from the Upper Midwest into New England, and severe weather and heavy rain south of the front. Scattered severe thunderstorms with damaging gusts, severe hail, and heavy rain are expected across parts of the Great Lakes/Midwest through tonight. Read More >

Hazardous Weather Conditions

Current conditions at

Reedsville / Mifflin (KRVL)

Lat: 40.68°NLon: 77.63°WElev: 820ft.

A Few Clouds and Breezy

81°F

27°C

Humidity 42%
Wind Speed S 21 G 26 mph
Barometer 29.89 in
Dewpoint 55°F (13°C)
Visibility 9.00 mi
Heat Index81°F (27°C)
Last update 31 Mar 3:35 pm EDT
Extended Forecast for

Lewistown PA

  • This Afternoon

    This Afternoon: A chance of showers, with thunderstorms also possible after 5pm. Partly sunny, with a high near 78. Southwest wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Chance
    Showers

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 3am, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 61. South wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 70. South wind around 5 mph becoming light and variable in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 49. Calm wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 49 °F

    Showers

  • Thursday

    Thursday: A chance of showers. Cloudy, with a high near 56. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 56 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers before 2am. Mostly cloudy, with a low around 50. Chance of precipitation is 20%.

    Low: 50 °F

    Slight Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 40%.

    High: 80 °F

    Partly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.

    Low: 58 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Showers likely after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 60%.

    High: 82 °F

    Mostly Sunny
    then Showers
    Likely

Detailed Forecast

This Afternoon
A chance of showers, with thunderstorms also possible after 5pm. Partly sunny, with a high near 78. Southwest wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, mainly before 3am, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 61. South wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 70. South wind around 5 mph becoming light and variable in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 49. Calm wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers. Cloudy, with a high near 56. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A slight chance of showers before 2am. Mostly cloudy, with a low around 50. Chance of precipitation is 20%.
Friday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.
Saturday
Showers likely after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 60%.
Saturday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.
Sunday
Showers likely. Mostly cloudy, with a high near 68. Chance of precipitation is 60%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 36. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 55.
Monday Night
Mostly clear, with a low around 33.
Tuesday
Mostly sunny, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown PA
 40.61°N 77.57°W (Elev. 515 ft)
Last Update:
2:21 pm EDT Mar 31, 2026
Forecast Valid:
3pm EDT Mar 31, 2026-6pm EDT Apr 7, 2026
 
Forecast Discussion
 
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Additional Resources

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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