Gaithersburg Weather Forecast

    • 66
    • 89

    Mostly Sunny

    • 73
    • 90

    Increasing Clouds

    • 73
    • 87

    Chance Thunderstorms

    • 70
    • 92

    Rain Showers Likely

    • 71
    • 90

    Chance Thunderstorms

    • 70
    • 88

    Rain Showers Likely

    • 70
    • 85

    Chance Thunderstorms

Today 5 Jul Central and Southeast Montgomery

Mostly sunny. Highs in the upper 80s. South Winds around 5 Mph.

Tonight 5 Jul Central and Southeast Montgomery

Mostly clear. Lows in the mid 60s. South Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Gaithersburg Temperature Statistics

July Temperature

Gaithersburg - Montgomery County Airport (2.5 miles)

  • Lowest 3 July, 2025

    66.2 °F

  • Average July

    77.5 °F

  • Highest 1 July, 2025

    91.9 °F

Climate (2020–Present)

Gaithersburg - Montgomery County Airport (2.5 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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