Derwood Weather Forecast

    • 72
    • 85

    Rain Showers Likely

    • 69
    • 90

    Chance Thunderstorms

    • 63
    • 84

    Mostly Sunny

    • 66
    • 83

    Mostly Sunny

    • 70
    • 86

    Partly Sunny

    • 74
    • 92

    Partly Sunny

Today 19 Jul Central and Southeast Montgomery

Mostly cloudy. A slight chance of Showers and Thunderstorms late this Morning, then Showers likely with a chance of Thunderstorms this afternoon. Highs in the mid 80s. South Winds around 5 Mph. Chance of rain 70 percent.

Tonight 19 Jul Central and Southeast Montgomery

Mostly cloudy. A chance of Showers and Thunderstorms in the evening. Lows in the lower 70s. Southeast Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 40 percent.

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Derwood Temperature Statistics

July Temperature

Gaithersburg - Montgomery County Airport (3.1 miles)

  • Lowest 4 July, 2025

    60.1 °F

  • Average July

    78.3 °F

  • Highest 8 July, 2025

    95 °F

Climate (2020–Present)

Gaithersburg - Montgomery County Airport (3.1 miles)

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  • Average Low 2020–2025

    46.4 °F

  • Average 2020–2025

    56.1 °F

  • Average High 2020–2025

    65.9 °F
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