Gresham Weather Forecast

    • 63
    • 88

    Mostly Sunny

    • 62
    • 87

    Sunny

    • 66
    • 88

    Mostly Sunny

    • 68
    • 91

    Mostly Sunny

    • 70
    • 92

    Slight Chance Thunderstorms

    • 71
    • 92

    Chance Thunderstorms

Today 15 Sep Marion

Mostly sunny. Highs in the upper 80s. Northeast Winds 5 to 10 Mph.

Tonight 15 Sep Marion

Partly cloudy in the Evening, then becoming mostly clear. Lows in the lower 60s. Northeast Winds around 5 Mph.

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Gresham Temperature Statistics

September Temperature

Marion County Airport (17.4 miles)

  • Lowest 9 September, 2026

    64.4 °F

  • Average September

    78.8 °F

  • Highest 5 September, 2026

    96.8 °F

Climate (2021–2026)

Marion County Airport (17.4 miles)

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  • Average Low 2021–2026

    53.2 °F

  • Average 2021–2026

    63 °F

  • Average High 2021–2026

    74 °F
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