Letha Weather Forecast

    • 58
    • 91

    Increasing Clouds

    • 58
    • 98

    Hot

    • 54
    • 89

    Sunny

    • 57
    • 90

    Mostly Sunny

    • 62
    • 96

    Mostly Cloudy

    • 57
    • 91

    Partly Sunny

    • 56
    • 91

    Sunny

Today 15 Jun Lower Treasure Valley

Sunny. Highs 88 to 93. Northwest Winds 10 to 15 Mph.

Tonight 15 Jun Lower Treasure Valley

Decreasing Clouds. Lows 58 to 63. Northwest Winds 10 to 15 Mph this Evening, becoming light after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Letha Temperature Statistics

June Temperature

Caldwell - Caldwell Industrial Airport (17.4 miles)

  • Lowest 11 June, 2026

    44.1 °F

  • Average June

    65.1 °F

  • Highest 2 June, 2026

    86 °F

Climate (2021–Present)

Caldwell - Caldwell Industrial Airport (17.4 miles)

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

  • Average Low 2021–2026

    42 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    65.4 °F
Get WillyWeather+ to remove ads