Upper Arcadia Reservoir Weather Forecast

    • 30
    • 52

    Slight Chance Rain

    • 32
    • 56

    Chance Rain Showers

    • 31
    • 59

    Mostly Sunny

    • 36
    • 64

    Mostly Sunny

    • 40
    • 67

    Mostly Cloudy

    • 42
    • 70

    Chance Rain

    • 41
    • 70

    Chance Rain Showers

Today 28 Apr Upper Snake River Plain

Mostly sunny. A slight chance of rain in the afternoon. Highs 49 to 57. Southwest Winds up to 10 Mph. Increasing to 10 to 15 Mph in the afternoon.

Tonight 28 Apr Upper Snake River Plain

Partly cloudy. Lows 28 to 35. Southwest Winds 10 to 15 Mph. Shifting to north after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Upper Arcadia Reservoir Temperature Statistics

April Temperature

Rexburg, Rexburg-Madison County Airport (23.6 miles)

  • Lowest 18 April, 2026

    18.6 °F

  • Average April

    45.3 °F

  • Highest 10 April, 2026

    74.6 °F

Climate (2021–Present)

Rexburg, Rexburg-Madison County Airport (23.6 miles)

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  • Average Low 2021–2026

    34.4 °F

  • Average 2021–2026

    46.5 °F

  • Average High 2021–2026

    58.5 °F
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