Lewisville Weather Forecast

    • 18
    • 37

    Patchy Freezing Fog

    • 14
    • 36

    Patchy Freezing Fog

    • 16
    • 36

    Mostly Sunny

    • 15
    • 39

    Mostly Sunny

    • 16
    • 38

    Mostly Sunny

    • 19
    • 38

    Partly Sunny

Today 15 Jan Upper Snake River Plain

Mostly sunny. Patchy freezing fog in the morning. Highs 34 to 41. Light and variable Winds. Becoming southwest up to 10 Mph in the afternoon.

Tonight 15 Jan Upper Snake River Plain

Partly cloudy. Patchy freezing fog. Lows 14 to 21. South Winds up to 10 Mph. Shifting to northeast after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Lewisville Temperature Statistics

January Temperature

Idaho Falls Regional Airport (12.4 miles)

  • Lowest 11 January, 2026

    17.1 °F

  • Average January

    31.1 °F

  • Highest 3 January, 2026

    48 °F

Climate (2021–Present)

Idaho Falls Regional Airport (12.4 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    33.6 °F

  • Average 2021–2026

    46.5 °F

  • Average High 2021–2026

    59.3 °F
Get WillyWeather+ to remove ads