Foster Weather Forecast

    • 55
    • 71

    Slight Chance Thunderstorms

    • 56
    • 70

    Chance Thunderstorms

    • 59
    • 75

    Chance Thunderstorms

    • 60
    • 78

    Partly Sunny

    • 54
    • 77

    Chance Thunderstorms

    • 54
    • 70

    Slight Chance Thunderstorms

Today 18 Sep Pierce

Mostly cloudy. A slight chance of Showers and Thunderstorms this afternoon. Highs in the lower 70s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 18 Sep Pierce

A slight chance of Thunderstorms in the evening. Mostly cloudy with a slight chance of Showers. Lows in the mid 50s. West Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

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Foster Temperature Statistics

September Temperature

Norfolk, Stefan Memorial Airport (23 miles)

  • Lowest 6 September, 2025

    39 °F

  • Average September

    66.1 °F

  • Highest 13 September, 2025

    91.9 °F

Climate (2020–Present)

Norfolk, Stefan Memorial Airport (23 miles)

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  • Average Low 2020–2025

    40.2 °F

  • Average 2020–2025

    51.8 °F

  • Average High 2020–2025

    63.7 °F
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