Nampa Municipal Airport Weather Forecast

    • 33
    • 44

    Rain

    • 38
    • 46

    Rain

    • 37
    • 51

    Rain Likely

    • 39
    • 49

    Rain Likely

    • 37
    • 55

    Chance Rain

    • 35
    • 51

    Chance Rain

    • 29
    • 48

    Partly Sunny

Today 20 Dec Lower Treasure Valley

Patchy fog this morning. Sunny, cooler with Highs 39 to 44. Southeast Winds up to 10 Mph.

Tonight 20 Dec Lower Treasure Valley

Rain with a slight chance of light freezing rain this Evening, then rain with a chance of light freezing rain after midnight. Patchy fog this evening. Areas of fog after midnight. Chance of precipitation 90 percent. Lows 30 to 35. Temperature rising into the mid 30s after midnight. Southeast Winds up to 10 Mph.

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Nampa Municipal Airport Temperature Statistics

December Temperature

Nampa Municipal Airport (0 miles)

  • Lowest 1 December, 2025

    19.4 °F

  • Average December

    40.4 °F

  • Highest 10 December, 2025

    62.6 °F

Climate (2020–Present)

Nampa Municipal Airport (0 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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