Sidney Weather Forecast

    • 33
    • 41

    Mostly Cloudy

    • 22
    • 53

    Slight Chance Rain

    • 24
    • 33

    Chance Snow

Today 18 Dec Kennebec

Partly sunny. Highs in the lower 40s. Light and variable Winds, becoming south around 10 Mph with Gusts up to 20 Mph in the afternoon.

Tonight 18 Dec Kennebec

Mostly clear. Lows around 20. West Winds around 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sidney Temperature Statistics

December Temperature

Waterville, Waterville Robert LaFleur Airport (5.6 miles)

  • Lowest 15 December, 2025

    10 °F

  • Average December

    21.9 °F

  • Highest 11 December, 2025

    32 °F

Climate (2020–Present)

Waterville, Waterville Robert LaFleur Airport (5.6 miles)

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  • Average Low 2020–2025

    38.4 °F

  • Average 2020–2025

    47.1 °F

  • Average High 2020–2025

    56.2 °F
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