Glen Allen Weather Forecast

    • 68
    • 97

    Slight Chance Thunderstorms

    • 62
    • 83

    Partly Sunny

    • 62
    • 80

    Partly Sunny

    • 64
    • 81

    Chance Thunderstorms

    • 68
    • 86

    Mostly Sunny

    • 72
    • 92

    Mostly Sunny

Today 21 Jul Bollinger

Mostly sunny. A slight chance of Showers and Thunderstorms this afternoon. Hot with Highs in the mid 90s. West Winds around 5 Mph. Chance of rain 20 percent. Highest heat index Readings heat index Readings up to 107 this afternoon.

Tonight 21 Jul Bollinger

Mostly clear. Lows in the upper 60s. North Winds around 5 Mph.

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Glen Allen Temperature Statistics

July Temperature

Cape Girardeau, Cape Girardeau Regional Airport (25.5 miles)

  • Lowest 14 July, 2026

    67.6 °F

  • Average July

    80.4 °F

  • Highest 3 July, 2026

    93.7 °F

Climate (2021–2026)

Cape Girardeau, Cape Girardeau Regional Airport (25.5 miles)

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  • Average Low 2021–2026

    49 °F

  • Average 2021–2026

    59.7 °F

  • Average High 2021–2026

    70.5 °F
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