Union Weather Forecast

    • 22
    • 36

    Mostly Sunny

    • 40
    • 45

    Rain Likely

    • 34
    • 54

    Mostly Cloudy

    • 49
    • 56

    Rain

    • 53
    • 63

    Chance Rain

    • 42
    • 63

    Chance Rain

Today 21 Dec Montgomery

Sunny. Highs in the mid 30s. Northwest Winds around 5 Mph.

Tonight 21 Dec Montgomery

Clear. Lows in the lower 20s. Southeast Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Union Temperature Statistics

December Temperature

Dayton, Cox Dayton International Airport (4.3 miles)

  • Lowest 14 December, 2025

    -2 °F

  • Average December

    27 °F

  • Highest 18 December, 2025

    54 °F

Climate (2020–Present)

Dayton, Cox Dayton International Airport (4.3 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    46.2 °F

  • Average 2020–2025

    55.4 °F

  • Average High 2020–2025

    64.6 °F
Get WillyWeather+ to remove ads