Firth Weather Forecast

    • 29
    • 50

    Rain Showers

    • 28
    • 44

    Chance Snow

    • 29
    • 46

    Chance Snow Showers

    • 29
    • 49

    Chance Snow Showers

    • 28
    • 52

    Slight Chance Rain Showers

    • 28
    • 55

    Mostly Sunny

Today 31 Mar Lower Snake River Plain

A chance of rain Showers and a slight chance of Thunderstorms in the morning. Then rain Showers and a chance of Thunderstorms in the afternoon. Highs 47 to 54. Southwest Winds 10 to 20 Mph.

Tonight 31 Mar Lower Snake River Plain

Mostly cloudy. A chance of rain Showers, Thunderstorms and snow Showers in the evening. Then a slight chance of snow after midnight. Little or no snow accumulation. Lows 27 to 34. Southwest Winds 10 to 20 Mph. Chance of precipitation 50 percent.

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Firth Temperature Statistics

March Temperature

Idaho Falls Regional Airport (15.5 miles)

  • Lowest 8 March, 2025

    12.8 °F

  • Average March

    40.5 °F

  • Highest 26 March, 2025

    71.7 °F

Climate (2020–Present)

Idaho Falls Regional Airport (15.5 miles)

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  • Average Low 2020–2025

    32.9 °F

  • Average 2020–2025

    45.9 °F

  • Average High 2020–2025

    58.5 °F
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