Windsor Weather Forecast

    • 16
    • 20

    Cloudy

    • 15
    • 21

    Overcast

    • 12
    • 20

    Cloudy

    • 14
    • 22

    Sunny day

    • 14
    • 22

    Partly cloudy

    • 12
    • 21

    Partly cloudy

Today 18 Sep London and South East England

Fine during the morning, with some warm sunshine after a cool start in places. Becoming breezier later, with thickening cloud eventually bringing a little light rain in places. Maximum temperature 23 °C.

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Windsor Temperature Statistics

September Temperature

Heathrow (11km)

  • Lowest 9 September, 2026

    11.5 °C

  • Average September

    18.4 °C

  • Highest 6 September, 2026

    27.6 °C

Climate (2021–2026)

Heathrow (11km)

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  • Average Low 2021–2026

    8.9 °C

  • Average 2021–2026

    12.7 °C

  • Average High 2021–2026

    16.6 °C
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