Sydney Harbour Weather Forecast

    • 78
    • 96

    Slight Chance Thunderstorms

    • 78
    • 96

    Chance Thunderstorms

    • 77
    • 97

    Slight Chance Thunderstorms

    • 78
    • 95

    Partly Sunny

    • 74
    • 93

    Slight Chance Thunderstorms

    • 74
    • 94

    Mostly Sunny

    • 75
    • 95

    Mostly Sunny

Today 13 Sep Montgomery

Mostly sunny with a slight chance of Showers and Thunderstorms. Hot. Near steady temperature in the lower 90s. South Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 107.

Tonight 13 Sep Montgomery

Partly cloudy with a slight chance of Showers with isolated Thunderstorms this Evening, then mostly clear after midnight. Lows in the mid 70s. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 106 early this evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sydney Harbour Temperature Statistics

September Temperature

Houston, Hooks Memorial Airport (9.3 miles)

  • Lowest 10 September, 2026

    72.6 °F

  • Average September

    84 °F

  • Highest 7 September, 2026

    96.7 °F

Climate (2021–2026)

Houston, Hooks Memorial Airport (9.3 miles)

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  • Average Low 2021–2026

    61.6 °F

  • Average 2021–2026

    71.9 °F

  • Average High 2021–2026

    82.7 °F
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