Riverside SPB Weather Forecast

    • 40
    • 64

    Increasing Clouds

    • 38
    • 59

    Chance Rain

    • 39
    • 62

    Partly Sunny

    • 39
    • 64

    Mostly Sunny

    • 39
    • 65

    Partly Sunny

    • 41
    • 66

    Mostly Cloudy

Today 19 Sep Southern Piscataquis

Sunny. Highs in the lower 60s. Northwest Winds 5 to 10 Mph.

Tonight 19 Sep Southern Piscataquis

Clear in the Evening, then becoming partly cloudy. Lows around 40. Northeast Winds around 5 Mph in the Evening, becoming light and variable.

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Riverside SPB Temperature Statistics

September Temperature

Greenville (24.9 miles)

  • Lowest 9 September, 2026

    43 °F

  • Average September

    57.6 °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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