San Joaquin River National Wildlife Refuge Weather Forecast

    • 47
    • 66

    Slight Chance Rain

    • 48
    • 73

    Mostly Sunny

    • 49
    • 73

    Partly Sunny

    • 48
    • 68

    Mostly Cloudy

    • 48
    • 69

    Partly Sunny

    • 49
    • 71

    Partly Sunny

Today 22 Apr Northern San Joaquin Valley

Partly cloudy with a slight chance of rain. Highs 62 to 71.

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San Joaquin River National Wildlife Refuge Temperature Statistics

April Temperature

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

  • Lowest 18 April, 2026

    43.6 °F

  • Average April

    63.3 °F

  • Highest 5 April, 2026

    86.6 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    51.8 °F

  • Average 2021–2026

    63.7 °F

  • Average High 2021–2026

    76.3 °F
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