Portland Weather Forecast

    • 64
    • 87

    Rain Showers Likely

    • 58
    • 75

    Chance Rain Showers

    • 51
    • 70

    Mostly Cloudy

    • 51
    • 71

    Partly Sunny

    • 54
    • 73

    Partly Sunny

    • 54
    • 75

    Mostly Cloudy

Today 20 Sep Callaway

Partly sunny with a chance of Showers. A chance of Thunderstorms this afternoon. Highs in the mid 80s. West Winds around 5 Mph. Chance of rain 50 percent.

Tonight 20 Sep Callaway

A chance of Thunderstorms. Showers likely. Lows in the mid 60s. North Winds 5 to 10 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Portland Temperature Statistics

September Temperature

Jefferson City, Jefferson City Memorial Airport (24.9 miles)

  • Lowest 14 September, 2026

    64.7 °F

  • Average September

    82.4 °F

  • Highest 5 September, 2026

    100.7 °F

Climate (2021–2026)

Jefferson City, Jefferson City Memorial Airport (24.9 miles)

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  • Average Low 2021–2026

    48.2 °F

  • Average 2021–2026

    59.2 °F

  • Average High 2021–2026

    70.3 °F
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