Walnut Weather Forecast

    • 23
    • 33

    Increasing Clouds

    • 35
    • 42

    Mostly Cloudy

    • 32
    • 47

    Mostly Cloudy

    • 43
    • 51

    Slight Chance Rain

    • 35
    • 56

    Mostly Cloudy

    • 30
    • 43

    Mostly Cloudy

Today 21 Dec Bureau

Sunny. Highs in the mid 30s. South Winds around 5 Mph.

Tonight 21 Dec Bureau

Mostly cloudy. Near steady temperature in the upper 20s. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Walnut Temperature Statistics

December Temperature

Sterling Rockfalls (13 miles)

  • Lowest 4 December, 2025

    -5.1 °F

  • Average December

    20.7 °F

  • Highest 18 December, 2025

    50 °F

Climate (2020–Present)

Sterling Rockfalls (13 miles)

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  • Average Low 2020–2025

    41.7 °F

  • Average 2020–2025

    51.6 °F

  • Average High 2020–2025

    61.6 °F
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