Spring Valley Weather Forecast

    • 64
    • 82

    Rain Showers Likely

    • 58
    • 81

    Mostly Sunny

    • 57
    • 77

    Partly Sunny

    • 60
    • 78

    Partly Sunny

    • 64
    • 79

    Slight Chance Thunderstorms

    • 64
    • 82

    Slight Chance Thunderstorms

    • 63
    • 82

    Partly Sunny

Today 21 Aug Bureau

Mostly sunny with a chance of Showers and Thunderstorms. Near steady temperature around 80. Southwest Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 21 Aug Bureau

Partly cloudy. Showers likely with a chance of Thunderstorms this evening. Some Thunderstorms may be severe with damaging Winds and large hail. Lows in the lower 60s. West Winds 5 to 10 Mph. Chance of rain 60 percent.

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Spring Valley Temperature Statistics

August Temperature

Illinois Valley Regional Airport (3.1 miles)

  • Lowest 3 August, 2026

    60.8 °F

  • Average August

    74.3 °F

  • Highest 10 August, 2026

    89.6 °F

Climate (2021–2026)

Illinois Valley Regional Airport (3.1 miles)

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  • Average Low 2021–2026

    43.3 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    62.6 °F
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