San Joaquin River National Wildlife Refuge Weather Forecast

    • 42
    • 56

    Decreasing Clouds

    • 38
    • 57

    Partly Sunny

    • 41
    • 57

    Mostly Cloudy

    • 40
    • 58

    Mostly Cloudy

    • 43
    • 58

    Mostly Cloudy

    • 44
    • 57

    Mostly Cloudy

Today 23 Jan Northern San Joaquin Valley

Mostly cloudy. Widespread fog. Locally dense in the Morning, then patchy fog in the afternoon. Highs around 55. Light Winds.

Tonight 23 Jan Northern San Joaquin Valley

Mostly cloudy in the evening then becoming partly cloudy. Lows around 41. Light Winds.

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  • Temperature Real-Time

San Joaquin River National Wildlife Refuge Temperature Statistics

January Temperature

Modesto City-County Airport - Harry Sham Field (13 miles)

  • Lowest 10 January, 2026

    32 °F

  • Average January

    48.6 °F

  • Highest 6 January, 2026

    63 °F

Climate (2021–Present)

Modesto City-County Airport - Harry Sham Field (13 miles)

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  • Average Low 2021–2026

    51.5 °F

  • Average 2021–2026

    63.4 °F

  • Average High 2021–2026

    75.9 °F
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