Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

For More Weather Information:

Philadelphia, PA Local Forecast Office

36NM SSW Philadelphia PA

Marine Point Forecast

[NOTICE]
    • Today

      Today:Variable winds 5 kt or less. Sunny. Waves 1 ft or less.

      High: 87 °F

      Light Wind
      < 1ft

    • Tonight

      Tonight:Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.

      Low: 71 °F

      Light Wind
      < 1ft

    • Thursday

      Thursday:Variable winds 5 kt or less. Showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm.   Waves 1 ft or less.

      High: 83 °F

      Light Wind
      < 1ft

    • Thursday Night

      Thursday Night:Variable winds 5 kt or less. Showers likely, mainly before 8pm.   Waves 1 ft or less.

      Low: 67 °F

      Light Wind
      < 1ft

    • Friday

      Friday:Variable winds 5 kt or less. A chance of showers after 2pm.   Waves 1 ft or less.

      High: 84 °F

      Light Wind
      < 1ft

    • Friday Night

      Friday Night:Variable winds 5 kt or less. A chance of showers, with thunderstorms also possible after 2am.   Waves 1 ft or less.

      Low: 67 °F

      Light Wind
      < 1ft

    • Saturday

      Saturday:Variable winds 5 kt or less. A chance of showers and thunderstorms, then showers likely after 8am.   Waves 1 ft or less.

      High: 82 °F

      Light Wind
      < 1ft

    • Saturday Night

      Saturday Night:Variable winds 5 kt or less. Showers likely.   Waves 1 ft or less.

      Low: 68 °F

      Light Wind
      < 1ft

    • Sunday

      Sunday:Variable winds 5 kt or less. A chance of showers and thunderstorms after 2pm.   Waves 1 ft or less.

      High: 84 °F

      Light Wind
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:20 am EDT Aug 19, 2026
Forecast Valid: 5am EDT Aug 19, 2026-6pm EDT Aug 25, 2026

View Nearby Observations

Detailed Forecast


Today
Variable winds 5 kt or less. Sunny. Waves 1 ft or less.
Tonight
Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.
Thursday
Variable winds 5 kt or less. Showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Waves 1 ft or less.
Thursday Night
Variable winds 5 kt or less. Showers likely, mainly before 8pm. Waves 1 ft or less.
Friday
Variable winds 5 kt or less. A chance of showers after 2pm. Waves 1 ft or less.
Friday Night
Variable winds 5 kt or less. A chance of showers, with thunderstorms also possible after 2am. Waves 1 ft or less.
Saturday
Variable winds 5 kt or less. A chance of showers and thunderstorms, then showers likely after 8am. Waves 1 ft or less.
Saturday Night
Variable winds 5 kt or less. Showers likely. Waves 1 ft or less.
Sunday
Variable winds 5 kt or less. A chance of showers and thunderstorms after 2pm. Waves 1 ft or less.

Winds and seas higher in and near tstms.

*Notices:

  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.
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ABOUT THIS FORECAST

Point Forecast: 39.45°N 75.6°W
Last Update: 4:20 am EDT Aug 19, 2026
Forecast Valid: 5am EDT Aug 19, 2026-6pm EDT Aug 25, 2026
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