Clearlake Weather Forecast

    • 29
    • 47

    Mostly Cloudy

    • 41
    • 51

    Rain

    • 45
    • 55

    Rain Likely

    • 46
    • 59

    Rain

    • 42
    • 58

    Rain

    • 41
    • 59

    Chance Rain

Today 20 Feb Southern Lake County

Partly cloudy in the morning then becoming mostly cloudy. Patchy valley fog in the morning. Highs 42 to 52.

Tonight 20 Feb Southern Lake County

Mostly cloudy. Slight chance of rain and snow through the night. Snow level 2000 to 2500 feet. Lows 27 to 37. Southeast wind around 20 Mph in the Valleys and southeast 20 to 30 Mph at higher elevation.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Clearlake Temperature Statistics

February Temperature

Ukiah Municipal Airport (32.9 miles)

  • Lowest 4 February, 2026

    33.7 °F

  • Average February

    50.9 °F

  • Highest 5 February, 2026

    75.7 °F

Climate (2021–Present)

Ukiah Municipal Airport (32.9 miles)

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

  • Average Low 2021–2026

    47 °F

  • Average 2021–2026

    60.8 °F

  • Average High 2021–2026

    76.1 °F
Get WillyWeather+ to remove ads