Foster Weather Forecast

    • 46
    • 59

    Rain Showers

    • 44
    • 57

    Rain

    • 37
    • 54

    Rain Likely

    • 43
    • 60

    Mostly Cloudy

    • 46
    • 64

    Rain Likely

    • 44
    • 60

    Rain Likely

Today 5 Nov Cascade Foothills of Marion and Linn Counties

A slight chance of Thunderstorms. Rain this Morning, then Showers this afternoon. Highs in the upper 50s. South wind 10 to 15 Mph. Gusts up to 35 Mph this afternoon. Chance of rain near 100 percent. Rainfall Amounts a half to three Quarters of an Inch, except higher Amounts possible in Thunderstorms.

Tonight 5 Nov Cascade Foothills of Marion and Linn Counties

A slight chance of Thunderstorms in the evening. Rain. Lows in the upper 40s. Southwest wind 15 to 20 Mph. Gusts up to 35 Mph in the evening. Chance of rain near 100 percent. Rainfall Amounts a quarter to three Quarters of an Inch, except higher Amounts possible in Thunderstorms.

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Foster Temperature Statistics

November Temperature

Corvallis, Corvallis Municipal Airport (31.7 miles)

  • Lowest 2 November, 2025

    39 °F

  • Average November

    51.8 °F

  • Highest 1 November, 2025

    61 °F

Climate (2020–Present)

Corvallis, Corvallis Municipal Airport (31.7 miles)

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  • Average Low 2020–2025

    43.4 °F

  • Average 2020–2025

    53 °F

  • Average High 2020–2025

    63.9 °F
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