Potomac Weather Forecast

    • 16
    • 28

    Decreasing Clouds

    • 18
    • 29

    Partly Sunny

    • 25
    • 36

    Partly Sunny

    • 30
    • 48

    Mostly Cloudy

    • 37
    • 54

    Mostly Cloudy

    • 28
    • 47

    Slight Chance Snow

Today 14 Dec Central and Southeast Montgomery

Mostly sunny. A chance of snow in the morning. Little or no additional snow accumulation. Highs in the upper 20s. Northwest Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of snow 50 percent.

Tonight 14 Dec Central and Southeast Montgomery

Snow with a slight chance of rain. Snow may be heavy at Times. Snow accumulation of 2 to 4 Inches. Lows in the mid 20s. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of precipitation near 100 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac Temperature Statistics

December Temperature

Gaithersburg - Montgomery County Airport (10.6 miles)

  • Lowest 4 December, 2025

    21.9 °F

  • Average December

    32.3 °F

  • Highest 1 December, 2025

    44.1 °F

Climate (2020–Present)

Gaithersburg - Montgomery County Airport (10.6 miles)

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

  • Average Low 2020–2025

    46.3 °F

  • Average 2020–2025

    56 °F

  • Average High 2020–2025

    65.8 °F
Get WillyWeather+ to remove ads