Idyllwild Weather Forecast

    • 66
    • 78

    Mostly Sunny

    • 65
    • 78

    Partly Sunny

    • 58
    • 73

    Chance Rain Showers

    • 57
    • 68

    Slight Chance Rain Showers

    • 60
    • 71

    Mostly Sunny

    • 63
    • 76

    Sunny

    • 63
    • 78

    Sunny

Today 25 Sep Riverside County Mountains

Mostly sunny. Highs 76 to 86.

Tonight 25 Sep Riverside County Mountains

Mostly clear this evening. Becoming partly cloudy. Lows 51 to 61. Areas of Winds west to 10 Mph this evening becoming light.

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Idyllwild Temperature Statistics

September Temperature

Palm Springs Regional Airport (13 miles)

  • Lowest 19 September, 2026

    66.7 °F

  • Average September

    88.9 °F

  • Highest 10 September, 2026

    113.6 °F

Climate (2021–2026)

Palm Springs Regional Airport (13 miles)

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  • Average Low 2021–2026

    64.7 °F

  • Average 2021–2026

    77.5 °F

  • Average High 2021–2026

    90.3 °F
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