Foster Weather Forecast

    • 59
    • 69

    Rain Showers

    • 51
    • 68

    Chance Rain Showers

    • 43
    • 61

    Chance Rain Showers

    • 43
    • 63

    Mostly Cloudy

    • 47
    • 67

    Mostly Cloudy

    • 51
    • 69

    Mostly Cloudy

Today 20 May Warren

Showers with a slight chance of Thunderstorms this Morning, then Showers with a chance of Thunderstorms this afternoon. Highs in the upper 60s. East Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 90 percent.

Tonight 20 May Warren

Cloudy. Showers likely with a chance of Thunderstorms in the Evening, then a chance of Showers and Thunderstorms after midnight. Lows in the upper 50s. Southeast Winds 10 to 15 Mph, becoming south 5 to 10 Mph after midnight. Chance of rain 70 percent.

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Foster Temperature Statistics

May Temperature

Butler County Regional Airport (14.3 miles)

  • Lowest 10 May, 2025

    38.6 °F

  • Average May

    63.9 °F

  • Highest 15 May, 2025

    87.7 °F

Climate (2020–Present)

Butler County Regional Airport (14.3 miles)

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  • Average Low 2020–2025

    44.4 °F

  • Average 2020–2025

    55.4 °F

  • Average High 2020–2025

    66.6 °F
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