Union Lake Weather Forecast

    • 68
    • 93

    Increasing Clouds

    • 70
    • 94

    Partly Sunny

    • 71
    • 95

    Chance Rain Showers

    • 72
    • 96

    Chance Thunderstorms

    • 69
    • 97

    Chance Thunderstorms

    • 63
    • 90

    Chance Rain Showers

Today 18 Sep Stephens

Mostly sunny with a 20 percent chance of Showers and Thunderstorms. Highs in the lower 90s. South Winds around 5 Mph.

Tonight 18 Sep Stephens

Partly cloudy. Lows in the upper 60s. South Winds around 5 Mph.

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Union Lake Temperature Statistics

September Temperature

Graham, Graham Municipal Airport (11.8 miles)

  • Lowest 8 September, 2025

    59.5 °F

  • Average September

    78.2 °F

  • Highest 4 September, 2025

    102.6 °F

Climate (2020–Present)

Graham, Graham Municipal Airport (11.8 miles)

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  • Average Low 2020–2025

    53 °F

  • Average 2020–2025

    65.1 °F

  • Average High 2020–2025

    77.7 °F
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