Riley Weather Forecast

    • 58
    • 71

    Rain Showers Likely

    • 60
    • 79

    Chance Rain Showers

    • 61
    • 80

    Chance Thunderstorms

    • 62
    • 82

    Slight Chance Thunderstorms

    • 57
    • 83

    Chance Rain Showers

    • 58
    • 80

    Mostly Sunny

Today 18 Sep Riley

A chance of Thunderstorms. Showers Likely, mainly in the morning. Highs in the lower 70s. Southwest Winds around 5 Mph. Chance of rain 60 percent.

Tonight 18 Sep Riley

Mostly cloudy. A slight chance of Showers and Thunderstorms late this Evening, then a chance of Showers and Thunderstorms. Lows in the lower 60s. Southwest Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Riley Temperature Statistics

September Temperature

Manhattan, Manhattan Municipal Airport (13.7 miles)

  • Lowest 7 September, 2025

    46 °F

  • Average September

    69.2 °F

  • Highest 12 September, 2025

    91.9 °F

Climate (2020–Present)

Manhattan, Manhattan Municipal Airport (13.7 miles)

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  • Average Low 2020–2025

    44.2 °F

  • Average 2020–2025

    56.9 °F

  • Average High 2020–2025

    69.8 °F
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