Rainbow Weather Forecast

    • 43
    • 55

    Chance Rain Showers

    • 41
    • 53

    Rain Showers

    • 40
    • 55

    Mostly Sunny

    • 47
    • 64

    Mostly Cloudy

    • 50
    • 69

    Partly Sunny

    • 53
    • 73

    Chance Rain Showers

    • 54
    • 71

    Chance Rain Showers

Today 18 Feb San Diego County Inland Valleys

Cloudy with Showers this Morning, then partly cloudy with a slight chance of Showers this afternoon. Locally heavy rainfall possible this morning. Highs around 56 in the western Valleys to 47 to 51 near the Foothills. Areas of Winds west 20 to 30 Mph with Gusts to 45 Mph. Becoming 10 to 20 Mph with Gusts to 30 Mph this afternoon.

Tonight 18 Feb San Diego County Inland Valleys

Mostly cloudy. A slight chance of Showers overnight. Patchy fog overnight. Lows 36 to 44 in wind Sheltered Areas to 41 to 45 in warmer Locations. Areas of Winds west 10 to 15 Mph with Gusts to 25 Mph. Becoming to 10 Mph overnight. Chance of measurable precipitation 20 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Rainbow Temperature Statistics

February Temperature

Fallbrook Community Airpark (6.8 miles)

  • Lowest 3 February, 2026

    48.2 °F

  • Average February

    60.1 °F

  • Highest 4 February, 2026

    86 °F

Climate (2021–Present)

Fallbrook Community Airpark (6.8 miles)

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

  • Average Low 2021–2026

    53.6 °F

  • Average 2021–2026

    61.9 °F

  • Average High 2021–2026

    74.2 °F
Get WillyWeather+ to remove ads