Rio Weather Forecast

    • 58
    • 78

    Decreasing Clouds

    • 58
    • 77

    Mostly Sunny

    • 60
    • 81

    Rain Showers

    • 48
    • 74

    Chance Rain Showers

    • 48
    • 71

    Partly Sunny

    • 54
    • 73

    Chance Rain Showers

    • 48
    • 70

    Chance Rain Showers

Today 21 Apr Knox

Mostly sunny and not as cool. Near steady temperature in the mid 70s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 21 Apr Knox

Partly cloudy this Evening, then clearing. Not as cool with Lows in the upper 50s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rio Temperature Statistics

April Temperature

Galesburg Municipal Airport (11.8 miles)

  • Lowest 5 April, 2026

    32.9 °F

  • Average April

    53.7 °F

  • Highest 17 April, 2026

    82.8 °F

Climate (2021–Present)

Galesburg Municipal Airport (11.8 miles)

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  • Average Low 2021–2026

    41.6 °F

  • Average 2021–2026

    51.9 °F

  • Average High 2021–2026

    62.3 °F
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