Meridian Weather Forecast

    • 37
    • 49

    Slight Chance Rain

    • 46
    • 57

    Rain

    • 34
    • 54

    Rain

    • 40
    • 48

    Rain

    • 33
    • 55

    Rain Likely

    • 32
    • 48

    Chance Rain

    • 36
    • 48

    Chance Rain

Today 15 Dec Upper Treasure Valley

Partly cloudy. A slight chance of rain this afternoon. Chance of rain 20 percent. Highs 48 to 53. Southeast Winds 10 to 15 Mph with Gusts to 25 Mph.

Tonight 15 Dec Upper Treasure Valley

Mostly cloudy. A chance of Rain, mainly after midnight. Chance of rain 30 percent. Lows 34 to 40. Southeast Winds up to 10 Mph.

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Meridian Temperature Statistics

December Temperature

Nampa Municipal Airport (6.8 miles)

  • Lowest 1 December, 2025

    19.4 °F

  • Average December

    40.8 °F

  • Highest 10 December, 2025

    62.6 °F

Climate (2020–Present)

Nampa Municipal Airport (6.8 miles)

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  • Average Low 2020–2025

    41.6 °F

  • Average 2020–2025

    53.3 °F

  • Average High 2020–2025

    65.1 °F
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