Great Falls Park Weather Forecast

    • 78
    • 99

    Patchy Smoke

    • 75
    • 99

    Patchy Smoke

    • 74
    • 94

    Chance Thunderstorms

    • 73
    • 91

    Rain Showers Likely

    • 71
    • 90

    Chance Thunderstorms

    • 72
    • 90

    Slight Chance Thunderstorms

Today 15 Jul Central and Southeast Montgomery

Sunny, hot with Highs around 100. West Winds 5 to 10 Mph.

Tonight 15 Jul Central and Southeast Montgomery

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 70s. Northwest Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Great Falls Park Temperature Statistics

July Temperature

Washington/Dulles International Airport, DC (11.2 miles)

  • Lowest 12 July, 2026

    66.9 °F

  • Average July

    81.8 °F

  • Highest 4 July, 2026

    99.6 °F

Climate (2021–2026)

Washington/Dulles International Airport, DC (11.2 miles)

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

  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    58.2 °F

  • Average High 2021–2026

    68.6 °F
Get WillyWeather+ to remove ads