Rock Island Weather Forecast

    • 37
    • 50

    Mostly Sunny

    • 33
    • 60

    Partly Sunny

    • 25
    • 47

    Mostly Sunny

    • 32
    • 47

    Partly Sunny

    • 42
    • 57

    Mostly Cloudy

    • 48
    • 60

    Chance Rain Showers

Today 3 Dec Le Flore

Sunny. Highs around 50. East Winds around 5 Mph, becoming south this afternoon.

Tonight 3 Dec Le Flore

Mostly clear. Not as cool with Lows in the mid 30s. South Winds 5 to 10 Mph.

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Rock Island Temperature Statistics

December Temperature

Fort Smith Regional Airport (11.8 miles)

  • Lowest

  • Average December

  • Highest

Climate (2019–Present)

Fort Smith Regional Airport (11.8 miles)

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  • Average Low 2019–2024

    53.5 °F
  • Average 2019–2024

    63.5 °F
  • Average High 2019–2024

    74.7 °F
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