Stillwater Weather Forecast

    • 43
    • 64

    Increasing Clouds

    • 46
    • 61

    Chance Rain

    • 40
    • 65

    Partly Sunny

    • 40
    • 64

    Mostly Sunny

    • 39
    • 66

    Mostly Sunny

    • 41
    • 68

    Mostly Cloudy

    • 44
    • 67

    Chance Rain Showers

Today 19 Sep Southern Penobscot

Partly sunny with a 40 percent chance of Showers. Highs in the mid 60s.

Tonight 19 Sep Southern Penobscot

Clear this Evening, then becoming partly cloudy. Lows in the lower 40s. East Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Stillwater Temperature Statistics

September Temperature

Bangor, Bangor International Airport (9.9 miles)

  • Lowest 15 September, 2026

    39.7 °F

  • Average September

    61.8 °F

  • Highest 10 September, 2026

    82.7 °F

Climate (2021–2026)

Bangor, Bangor International Airport (9.9 miles)

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  • Average Low 2021–2026

    37.2 °F

  • Average 2021–2026

    47.2 °F

  • Average High 2021–2026

    56.9 °F
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