Rockville Weather Forecast

    • 62
    • 84

    Increasing Clouds

    • 60
    • 79

    Chance Rain Showers

    • 61
    • 80

    Chance Rain Showers

    • 61
    • 80

    Chance Rain Showers

    • 57
    • 80

    Chance Rain Showers

    • 56
    • 77

    Slight Chance Thunderstorms

Today 18 Sep Delaware

Mostly sunny. A slight chance of Showers and Thunderstorms in the morning. Highs in the mid 80s. South Winds around 5 Mph. Chance of rain 20 percent.

Tonight 18 Sep Delaware

Partly cloudy with a slight chance of Showers and Thunderstorms. Near steady temperature in the mid 60s. Southeast Winds around 5 Mph. Chance of rain 20 percent.

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Rockville Temperature Statistics

September Temperature

Monticello Regional Airport (13.7 miles)

  • Lowest 7 September, 2025

    37.4 °F

  • Average September

    63.1 °F

  • Highest 13 September, 2025

    93.2 °F

Climate (2020–Present)

Monticello Regional Airport (13.7 miles)

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  • Average Low 2020–2025

    37.6 °F

  • Average 2020–2025

    48.3 °F

  • Average High 2020–2025

    58.5 °F
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