Roswell Weather Forecast

    • 48
    • 79

    Sunny

    • 50
    • 83

    Sunny

    • 53
    • 86

    Mostly Sunny

    • 54
    • 85

    Partly Sunny

    • 52
    • 82

    Partly Sunny

    • 50
    • 80

    Mostly Sunny

Today 16 Sep Lower Treasure Valley

Areas of fog this morning. Sunny. Highs 76 to 81. Southeast Winds up to 10 Mph.

Tonight 16 Sep Lower Treasure Valley

Mostly clear. Lows 48 to 53. Light Winds.

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Roswell Temperature Statistics

September Temperature

Caldwell - Caldwell Industrial Airport (18 miles)

  • Lowest 13 September, 2025

    51.1 °F

  • Average September

    72.3 °F

  • Highest 1 September, 2025

    97 °F

Climate (2020–Present)

Caldwell - Caldwell Industrial Airport (18 miles)

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  • Average Low 2020–2025

    41.5 °F

  • Average 2020–2025

    53 °F

  • Average High 2020–2025

    65 °F
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