Harp Airport Weather Forecast

    • 66
    • 84

    Severe Tstms

    • 58
    • 79

    Mostly Sunny

    • 58
    • 75

    Sunny

    • 61
    • 78

    Mostly Cloudy

    • 62
    • 77

    Partly Sunny

    • 65
    • 82

    Chance Rain Showers

Today 21 Jul Frederick

Mostly cloudy. Scattered Showers with isolated Thunderstorms this Morning, then numerous Showers and Thunderstorms this afternoon. Some Thunderstorms may be severe with damaging Winds, large Hail, and heavy rainfall this afternoon. Highs in the upper 80s. South Winds 5 to 10 Mph. Chance of rain 70 percent.

Tonight 21 Jul Frederick

Mostly cloudy with numerous Showers and scattered Thunderstorms in the Evening, then partly cloudy with scattered Showers and Thunderstorms after midnight. Some Thunderstorms may produce damaging Winds, large Hail, and heavy rainfall in the evening. Lows in the upper 60s. Southwest Winds 5 to 10 Mph. Chance of rain 70 percent.

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Harp Airport Temperature Statistics

July Temperature

Hagerstown, Washington County Regional Airport (11.8 miles)

  • Lowest 13 July, 2026

    64.7 °F

  • Average July

    80.7 °F

  • Highest 2 July, 2026

    99.6 °F

Climate (2021–2026)

Hagerstown, Washington County Regional Airport (11.8 miles)

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  • Average Low 2021–2026

    47.8 °F

  • Average 2021–2026

    56.9 °F

  • Average High 2021–2026

    66 °F
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