Calimesa Weather Forecast

    • 64
    • 91

    Increasing Clouds

    • 57
    • 86

    Chance Rain Showers

    • 56
    • 76

    Slight Chance Rain Showers

    • 59
    • 82

    Sunny

    • 61
    • 86

    Mostly Sunny

    • 62
    • 88

    Mostly Sunny

Today 26 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy in the morning. Becoming mostly sunny. Highs 91 to 97. Light Winds becoming southwest 10 to 15 Mph with Gusts to 25 Mph in the afternoon.

Tonight 26 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy in the evening. Becoming mostly cloudy. Lows 63 to 67. Areas of Winds west to 10 Mph in the evening becoming light.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Calimesa Temperature Statistics

September Temperature

San Bernardino Intl. Airport (11.8 miles)

  • Lowest 19 September, 2026

    57.2 °F

  • Average September

    73.8 °F

  • Highest 9 September, 2026

    105.8 °F

Climate (2021–2026)

San Bernardino Intl. Airport (11.8 miles)

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

  • Average Low 2021–2026

    54.2 °F

  • Average 2021–2026

    63.2 °F

  • Average High 2021–2026

    80.3 °F
Get WillyWeather+ to remove ads