Spring Valley Weather Forecast

    • 60
    • 78

    Mostly Cloudy

    • 57
    • 81

    Mostly Sunny

    • 62
    • 86

    Mostly Sunny

    • 65
    • 87

    Partly Sunny

    • 64
    • 83

    Chance Thunderstorms

    • 59
    • 83

    Slight Chance Thunderstorms

Today 23 May Bureau

Partly sunny. A slight chance of Showers this afternoon. Highs in the upper 70s. Northeast Winds around 5 Mph, becoming west around 5 Mph this afternoon. Chance of rain 20 percent.

Tonight 23 May Bureau

Mostly cloudy with a slight chance of Thunderstorms. A slight chance of Showers in the Evening, then a chance of Showers after midnight. Lows in the upper 50s. Southwest Winds around 5 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Spring Valley Temperature Statistics

May Temperature

Illinois Valley Regional Airport (3.1 miles)

  • Lowest 2 May, 2026

    33.8 °F

  • Average May

    59.9 °F

  • Highest 17 May, 2026

    87.8 °F

Climate (2021–Present)

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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