San Joaquin River National Wildlife Refuge Weather Forecast

    • 60
    • 89

    Sunny

    • 59
    • 92

    Mostly Sunny

    • 56
    • 85

    Mostly Sunny

    • 55
    • 84

    Mostly Sunny

    • 53
    • 79

    Mostly Sunny

    • 57
    • 82

    Sunny

    • 59
    • 86

    Sunny

Today 23 Sep Western Stanislaus County Below 1000 ft Including Interstate 5

Sunny. Highs around 89. North Winds up to 10 Mph.

Tonight 23 Sep Western Stanislaus County Below 1000 ft Including Interstate 5

Clear. Lows 60 to 70. Light Winds.

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San Joaquin River National Wildlife Refuge Temperature Statistics

September Temperature

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

  • Lowest 17 September, 2026

    52.6 °F

  • Average September

    74 °F

  • Highest 10 September, 2026

    105.7 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    51.8 °F

  • Average 2021–2026

    63.8 °F

  • Average High 2021–2026

    76.3 °F
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