Sidney Weather Forecast

    • 57
    • 78

    Chance Rain Showers

    • 49
    • 70

    Chance Rain Showers

    • 49
    • 72

    Partly Sunny

    • 53
    • 78

    Partly Sunny

    • 52
    • 75

    Partly Sunny

    • 57
    • 72

    Mostly Cloudy

Today 4 Sep Kennebec

Partly sunny. Patchy fog in the morning. A slight chance of Showers and Thunderstorms in the afternoon. Highs in the upper 70s. Light and variable Winds. Chance of rain 20 percent.

Tonight 4 Sep Kennebec

Cloudy. Areas of dense fog. Visibility one quarter mile or less at Times. Lows in the upper 50s. Light and variable Winds.

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  • Temperature Real-Time

Sidney Temperature Statistics

September Temperature

Waterville, Waterville Robert LaFleur Airport (5.6 miles)

  • Lowest 1 September, 2026

    51.1 °F

  • Average September

    62.6 °F

  • Highest 1 September, 2026

    75.9 °F

Climate (2021–2026)

Waterville, Waterville Robert LaFleur Airport (5.6 miles)

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  • Average Low 2021–2026

    38.1 °F

  • Average 2021–2026

    46.9 °F

  • Average High 2021–2026

    56 °F
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