Collinsville Weather Forecast

    • 56
    • 78

    Increasing Clouds

    • 45
    • 74

    Rain Showers Likely

    • 40
    • 67

    Sunny

    • 44
    • 73

    Mostly Sunny

    • 38
    • 66

    Mostly Sunny

    • 36
    • 64

    Partly Sunny

    • 42
    • 66

    Partly Sunny

Today 18 Oct Henry

Sunny. Near steady temperature in the upper 70s. Southwest Winds around 5 Mph.

Tonight 18 Oct Henry

Mostly clear. Not as cool with Lows in the upper 50s. South Winds 5 to 10 Mph.

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Collinsville Temperature Statistics

October Temperature

Martinsville (7.5 miles)

  • Lowest 10 October, 2025

    40.3 °F

  • Average October

    60 °F

  • Highest 8 October, 2025

    79.3 °F

Climate (2020–Present)

Martinsville (7.5 miles)

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  • Average Low 2020–2025

    45.4 °F

  • Average 2020–2025

    57.2 °F

  • Average High 2020–2025

    69.2 °F
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