Downeyville Weather Forecast

    • 55
    • 88

    Increasing Clouds

    • 60
    • 79

    Mostly Sunny

    • 69
    • 91

    Chance Rain Showers

    • 71
    • 91

    Slight Chance Thunderstorms

    • 68
    • 90

    Slight Chance Thunderstorms

    • 65
    • 85

    Slight Chance Thunderstorms

    • 64
    • 86

    Chance Rain Showers

Today 13 Sep Decatur

Mostly sunny Early, then partly cloudy with a slight chance of Showers late. Highs in the upper 80s. West Winds around 5 Mph, becoming northwest with Gusts up to 20 Mph late. Chance of rain 20 percent.

Tonight 13 Sep Decatur

Partly cloudy through the late Overnight, then clearing. Lows in the mid 50s. Northeast Winds around 5 Mph. Gusts up to 20 Mph toward daybreak.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Downeyville Temperature Statistics

September Temperature

Shelbyville Municipal Airport (16.8 miles)

  • Lowest 7 September, 2026

    59.6 °F

  • Average September

    78.3 °F

  • Highest 4 September, 2026

    96.7 °F

Climate (2021–2026)

Shelbyville Municipal Airport (16.8 miles)

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  • Average Low 2021–2026

    46.8 °F

  • Average 2021–2026

    56.9 °F

  • Average High 2021–2026

    67 °F
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