Idyllwild Weather Forecast

    • 64
    • 80

    Chance Rain Showers

    • 61
    • 71

    Rain Showers Likely

    • 62
    • 70

    Chance Rain Showers

    • 64
    • 74

    Chance Rain Showers

    • 65
    • 75

    Chance Rain Showers

    • 66
    • 76

    Slight Chance Thunderstorms

Today 17 Sep Riverside County Mountains

Partly cloudy. A slight chance of Showers and Thunderstorms in the afternoon. Highs 77 to 87. Areas of Winds east to 10 Mph. Chance of measurable precipitation 20 percent.

Tonight 17 Sep Riverside County Mountains

Mostly cloudy with a slight chance of Thunderstorms. A slight chance of Showers in the Evening, then a chance of Showers overnight. Lows 52 to 62. Light Winds. Chance of measurable precipitation 40 percent.

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  • Temperature Real-Time

Idyllwild Temperature Statistics

September Temperature

Palm Springs Regional Airport (13 miles)

  • Lowest 11 September, 2025

    69.1 °F

  • Average September

    89.5 °F

  • Highest 1 September, 2025

    109 °F

Climate (2020–Present)

Palm Springs Regional Airport (13 miles)

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  • Average Low 2020–2025

    64.5 °F

  • Average 2020–2025

    77.5 °F

  • Average High 2020–2025

    90.2 °F
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