Riverside SPB Weather Forecast

    • 45
    • 71

    Partly Sunny

    • 52
    • 76

    Becoming Sunny

    • 43
    • 72

    Mostly Sunny

    • 53
    • 68

    Rain Showers Likely

    • 48
    • 80

    Slight Chance Rain Showers

    • 44
    • 71

    Mostly Sunny

    • 47
    • 75

    Partly Sunny

Today 6 Sep Southern Piscataquis

Partly sunny with scattered Showers. Highs in the upper 60s. North Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent.

Tonight 6 Sep Southern Piscataquis

Partly cloudy. Lows in the mid 40s. Northwest Winds 5 to 10 Mph.

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Riverside SPB Temperature Statistics

September Temperature

Greenville (24.9 miles)

  • Lowest 1 September, 2026

    48.9 °F

  • Average September

    60 °F

  • Highest 4 September, 2026

    72 °F

Climate (2021–2026)

Greenville (24.9 miles)

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  • Average Low 2021–2026

    35.8 °F

  • Average 2021–2026

    43.6 °F

  • Average High 2021–2026

    51.3 °F
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