Alto Pass Weather Forecast

    • 67
    • 83

    Chance Thunderstorms

    • 57
    • 75

    Chance Rain Showers

    • 54
    • 77

    Mostly Sunny

    • 58
    • 78

    Partly Sunny

    • 63
    • 82

    Mostly Sunny

    • 68
    • 88

    Mostly Sunny

Today 8 Jun Union

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms this Morning, then a slight chance of Showers this afternoon. Highs in the mid 80s. South Winds around 5 Mph, becoming southwest this afternoon. Chance of rain 50 percent.

Tonight 8 Jun Union

Mostly cloudy with a chance of Thunderstorms. A chance of Showers. Lows in the upper 60s. Southwest Winds 5 to 10 Mph, becoming northwest after midnight. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Alto Pass Temperature Statistics

June Temperature

Southern Illinois Airport (14.9 miles)

  • Lowest 1 June, 2024

    65.6 °F

  • Average June

    74.5 °F

  • Highest 3 June, 2024

    88 °F

Climate (2019–Present)

Southern Illinois Airport (14.9 miles)

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  • Average Low 2019–2024

    47.6 °F

  • Average 2019–2024

    57.5 °F

  • Average High 2019–2024

    68.2 °F
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