Herkimer Weather Forecast

    • 55
    • 71

    Rain Showers Likely

    • 60
    • 78

    Slight Chance Thunderstorms

    • 62
    • 79

    Chance Thunderstorms

    • 62
    • 80

    Slight Chance Thunderstorms

    • 57
    • 82

    Slight Chance Thunderstorms

    • 54
    • 74

    Mostly Sunny

Today 18 Sep Marshall

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms Early, then Showers likely with a chance of Thunderstorms. Not as warm. Near steady temperature in the upper 60s. South Winds around 5 Mph, becoming southwest. Chance of rain 60 percent.

Tonight 18 Sep Marshall

Partly cloudy. Lows in the mid 50s. Southwest Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Herkimer Temperature Statistics

September Temperature

Marysville Municipal Airport (4.3 miles)

  • Lowest 6 September, 2025

    44.6 °F

  • Average September

    69.2 °F

  • Highest 12 September, 2025

    91.4 °F

Climate (2020–Present)

Marysville Municipal Airport (4.3 miles)

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  • Average Low 2020–2025

    43.3 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    65.9 °F
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