Union Lake Weather Forecast

    • 74
    • 91

    Slight Chance Thunderstorms

    • 74
    • 97

    Hot

    • 69
    • 92

    Rain Showers

    • 64
    • 87

    Chance Thunderstorms

    • 59
    • 78

    Chance Rain Showers

    • 61
    • 78

    Slight Chance Rain Showers

Today 28 Sep Stephens

Mostly sunny. A 30 percent chance of Showers and Thunderstorms this afternoon. Highs in the lower 90s. Southeast Winds around 5 Mph.

Tonight 28 Sep Stephens

Partly cloudy. Lows in the lower 70s. Southeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Union Lake Temperature Statistics

September Temperature

Graham, Graham Municipal Airport (11.8 miles)

  • Lowest 22 September, 2026

    69.1 °F

  • Average September

    86.9 °F

  • Highest 12 September, 2026

    105.1 °F

Climate (2021–2026)

Graham, Graham Municipal Airport (11.8 miles)

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  • Average Low 2021–2026

    54.7 °F

  • Average 2021–2026

    67 °F

  • Average High 2021–2026

    79.5 °F
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