Rock Valley Weather Forecast

    • 56
    • 84

    Rain Showers

    • 52
    • 87

    Rain Showers

    • 44
    • 69

    Rain Showers

    • 38
    • 57

    Mostly Cloudy

    • 42
    • 63

    Partly Sunny

    • 46
    • 69

    Slight Chance Thunderstorms

Today 16 May Sioux

Partly sunny. Highs in the mid 80s. Northeast Winds 10 to 15 Mph.

Tonight 16 May Sioux

Mostly cloudy. Showers and Thunderstorms likely after midnight. Lows in the upper 50s. East Winds 15 to 20 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rock Valley Temperature Statistics

May Temperature

Sheldon (23 miles)

  • Lowest 6 May, 2026

    26.6 °F

  • Average May

    55 °F

  • Highest 11 May, 2026

    78.8 °F

Climate (2021–Present)

Sheldon (23 miles)

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  • Average Low 2021–2026

    36.4 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    58.5 °F
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