Harper Weather Forecast

    • 52
    • 64

    Rain Showers

    • 46
    • 65

    Chance Thunderstorms

    • 41
    • 64

    Chance Rain Showers

    • 43
    • 65

    Mostly Sunny

    • 47
    • 71

    Mostly Sunny

    • 50
    • 74

    Mostly Sunny

    • 53
    • 77

    Partly Sunny

Today 30 Apr Keokuk

Cloudy with isolated Showers. Highs in the lower 60s. Temperature falling into the upper 50s. Southeast Winds 10 to 15 Mph. Chance of rain 20 percent.

Tonight 30 Apr Keokuk

Cloudy. A chance of Showers this Evening, then Showers likely with a slight chance of Thunderstorms after midnight. Not as cool with Lows in the lower 50s. East Winds around 10 Mph, becoming northeast after midnight. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Harper Temperature Statistics

April Temperature

Washington (20.5 miles)

  • Lowest 8 April, 2025

    21.2 °F

  • Average April

    52.2 °F

  • Highest 28 April, 2025

    84.2 °F

Climate (2020–Present)

Washington (20.5 miles)

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  • Average Low 2020–2025

    41.5 °F

  • Average 2020–2025

    51.8 °F

  • Average High 2020–2025

    62.1 °F
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