Olsen Slough Weather Forecast

    • 53
    • 59

    Rain Showers Likely

    • 54
    • 60

    Rain Showers

    • 53
    • 65

    Chance Rain Showers

    • 54
    • 74

    Partly Sunny

    • 50
    • 71

    Partly Sunny

    • 50
    • 70

    Mostly Sunny

Today 18 Sep Nelson

Cloudy. A chance of Showers this Morning, then Showers likely and a slight chance of Thunderstorms this afternoon. Highs 55 to 60. Breezy. Northeast Winds 15 to 25 Mph. Chance of rain 70 percent.

Tonight 18 Sep Nelson

Showers likely. A chance of Thunderstorms, mainly in the evening. Lows in the mid 50s. Northeast Winds 10 to 20 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Olsen Slough Temperature Statistics

September Temperature

Cooperstown (29.8 miles)

  • Lowest 7 September, 2025

    32 °F
  • Average September

    59.3 °F
  • Highest 14 September, 2025

    84.2 °F

Climate (2020–Present)

Cooperstown (29.8 miles)

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  • Average Low 2020–2025

    31.2 °F
  • Average 2020–2025

    41.6 °F
  • Average High 2020–2025

    52 °F
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