Potomac River - Coan River Entrance Weather Forecast

    • 74
    • 91

    Rain Showers

    • 71
    • 85

    Rain Showers

    • 70
    • 80

    Partly Sunny

    • 71
    • 81

    Slight Chance Rain Showers

    • 71
    • 79

    Slight Chance Rain Showers

    • 73
    • 82

    Slight Chance Thunderstorms

Today 21 Jul Northumberland

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms this Morning, then Showers likely with a chance of Thunderstorms this afternoon. Highs in the lower 90s. Southwest Winds 10 to 15 Mph. Chance of rain 70 percent. Heat index Values up to 103.

Tonight 21 Jul Northumberland

Showers and Thunderstorms likely. Humid with Lows in the lower 70s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 70 percent. Heat index Values up to 100 early in the evening.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac River - Coan River Entrance Temperature Statistics

July Temperature

St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity (10.6 miles)

  • Lowest 14 July, 2026

    64.9 °F

  • Average July

    81.1 °F

  • Highest 3 July, 2026

    98.1 °F

Climate (2021–2026)

St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity (10.6 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    51.9 °F

  • Average 2021–2026

    60.4 °F

  • Average High 2021–2026

    68.7 °F
Get WillyWeather+ to remove ads