Gridley Weather Forecast

    • 56
    • 65

    Chance Rain Showers

    • 52
    • 64

    Decreasing Clouds

    • 52
    • 68

    Mostly Cloudy

    • 52
    • 69

    Mostly Cloudy

    • 49
    • 69

    Mostly Cloudy

    • 53
    • 68

    Mostly Cloudy

    • 54
    • 72

    Partly Sunny

Today 21 Sep McLean

Partly cloudy. Lows in the mid 50s. Highs in the mid 70s.

Tonight 21 Sep McLean

Cloudy. A chance of Sprinkles this evening. Lows in the mid 50s. Northeast Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Gridley Temperature Statistics

September Temperature

Pontiac Municipal Airport (18 miles)

  • Lowest 14 September, 2026

    48.9 °F

  • Average September

    74.2 °F

  • Highest 1 September, 2026

    95.5 °F

Climate (2021–2026)

Pontiac Municipal Airport (18 miles)

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  • Average Low 2021–2026

    42.3 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    62.6 °F
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