Byron Weather Forecast

    • 28
    • 36

    Mostly Cloudy

    • 21
    • 33

    Mostly Cloudy

    • 33
    • 37

    Cloudy

    • 30
    • 40

    Mostly Cloudy

    • 28
    • 35

    Mostly Cloudy

    • 13
    • 37

    Mostly Cloudy

Today 22 Dec Olmsted

Mostly cloudy this Morning, then becoming partly sunny. Highs in the mid 30s. South Winds 10 to 15 Mph.

Tonight 22 Dec Olmsted

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the upper 20s. Light Winds, becoming west after midnight.

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Byron Temperature Statistics

December Temperature

Rochester - St. Mary's Hospital Heliport (8.1 miles)

  • Lowest 14 December, 2025

    -9.6 °F

  • Average December

    17.1 °F

  • Highest 16 December, 2025

    42.3 °F

Climate (2020–Present)

Rochester - St. Mary's Hospital Heliport (8.1 miles)

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  • Average Low 2020–2025

    40.1 °F

  • Average 2020–2025

    48.2 °F

  • Average High 2020–2025

    56.2 °F
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