Boysen Park Weather Forecast

    • 51
    • 78

    Patchy Fog

    • 53
    • 70

    Mostly Cloudy

    • 52
    • 67

    Slight Chance Rain Showers

    • 51
    • 66

    Mostly Cloudy

    • 47
    • 67

    Mostly Sunny

    • 47
    • 70

    Partly Sunny

    • 48
    • 71

    Partly Sunny

Today 20 Jan Orange County Inland

Partly cloudy in the morning. Becoming mostly sunny. Highs around 74 towards the coast to 75 to 78 farther inland. Areas of Winds east to 10 Mph in the morning becoming light.

Tonight 20 Jan Orange County Inland

Partly cloudy. Patchy fog overnight. Lows around 50. Light Winds.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Boysen Park Temperature Statistics

January Temperature

Fullerton, Fullerton Municipal Airport (6.2 miles)

  • Lowest 9 January, 2026

    42.1 °F

  • Average January

    62.8 °F

  • Highest 14 January, 2026

    84.9 °F

Climate (2021–Present)

Fullerton, Fullerton Municipal Airport (6.2 miles)

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

  • Average Low 2021–2026

    56.9 °F

  • Average 2021–2026

    66.1 °F

  • Average High 2021–2026

    76.4 °F
Get WillyWeather+ to remove ads