Treadwell Weather Forecast

    • 52
    • 66

    Rain Showers

    • 46
    • 61

    Rain Showers

    • 42
    • 61

    Mostly Cloudy

    • 41
    • 59

    Mostly Cloudy

    • 40
    • 58

    Slight Chance Rain Showers

    • 42
    • 59

    Chance Rain Showers

Today 19 Sep Delaware

Partly sunny. Highs in the upper 60s. South Winds around 5 Mph.

Tonight 19 Sep Delaware

Mostly cloudy. Showers likely after midnight. Lows in the upper 40s. South Winds 5 to 10 Mph. Chance of rain 70 percent.

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Treadwell Temperature Statistics

September Temperature

Monticello, Sullivan County International Airport (46 miles)

  • Lowest 15 September, 2026

    42.1 °F

  • Average September

    64.8 °F

  • Highest 3 September, 2026

    81 °F

Climate (2021–2026)

Monticello, Sullivan County International Airport (46 miles)

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  • Average Low 2021–2026

    36.4 °F

  • Average 2021–2026

    45.9 °F

  • Average High 2021–2026

    55.2 °F
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