Thornburg Weather Forecast

    • 22
    • 24

    Mostly Cloudy

    • 25
    • 37

    Chance Rain

    • 13
    • 32

    Breezy

    • 8
    • 25

    Slight Chance Snow

    • -4
    • 18

    Mostly Cloudy

    • -3
    • 9

    Cold

Today 8 Dec Keokuk

Mostly cloudy late this Morning, then becoming partly sunny. Highs in the mid 20s. South Winds 5 to 10 Mph.

Tonight 8 Dec Keokuk

Mostly cloudy. Not as cool with Lows in the lower 20s. South Winds around 10 Mph with Gusts up to 25 Mph.

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Thornburg Temperature Statistics

December Temperature

Oskaloosa, Oskaloosa Municipal Airport (17.4 miles)

  • Lowest 4 December, 2025

    -2.9 °F

  • Average December

    23.3 °F

  • Highest 5 December, 2025

    36.9 °F

Climate (2020–Present)

Oskaloosa, Oskaloosa Municipal Airport (17.4 miles)

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  • Average Low 2020–2025

    43.7 °F

  • Average 2020–2025

    54 °F

  • Average High 2020–2025

    64.7 °F
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