Sigourney Weather Forecast

    • 62
    • 79

    Chance Thunderstorms

    • 59
    • 78

    Chance Thunderstorms

    • 61
    • 77

    Chance Rain Showers

    • 61
    • 76

    Chance Rain Showers

    • 61
    • 80

    Chance Thunderstorms

    • 58
    • 75

    Slight Chance Thunderstorms

    • 56
    • 74

    Mostly Sunny

Today 18 Sep Keokuk

Partly sunny with a chance of Showers with a slight chance of Thunderstorms. Near steady temperature in the lower 80s. South Winds around 5 Mph. Chance of rain 40 percent.

Tonight 18 Sep Keokuk

Showers likely with a chance of Thunderstorms. Lows in the lower 60s. Southwest Winds around 5 Mph, becoming south. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sigourney Temperature Statistics

September Temperature

Oskaloosa, Oskaloosa Municipal Airport (16.2 miles)

  • Lowest 7 September, 2025

    43 °F

  • Average September

    69.8 °F

  • Highest 13 September, 2025

    99 °F

Climate (2020–Present)

Oskaloosa, Oskaloosa Municipal Airport (16.2 miles)

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  • Average Low 2020–2025

    43.5 °F

  • Average 2020–2025

    53.8 °F

  • Average High 2020–2025

    64.6 °F
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