Oak Grove Weather Forecast

    • 67
    • 87

    Mostly Cloudy

    • 63
    • 84

    Chance Rain Showers

    • 63
    • 88

    Mostly Sunny

    • 64
    • 91

    Mostly Sunny

    • 67
    • 95

    Mostly Sunny

    • 62
    • 84

    Chance Rain Showers

Today 18 Sep Northern San Joaquin Valley

Mostly cloudy. A slight chance of rain Showers in the afternoon. Highs 83 to 89. North Winds up to 10 Mph shifting to the south in the afternoon.

Tonight 18 Sep Northern San Joaquin Valley

Cloudy. A chance of rain Showers in the Evening, then a chance of rain Showers and a slight chance of Thunderstorms after midnight. Lows 64 to 69. West Winds up to 10 Mph shifting to the south after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Oak Grove Temperature Statistics

September Temperature

Modesto City-County Airport - Harry Sham Field (11.2 miles)

  • Lowest 5 September, 2025

    61 °F

  • Average September

    74.9 °F

  • Highest 2 September, 2025

    102 °F

Climate (2020–Present)

Modesto City-County Airport - Harry Sham Field (11.2 miles)

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  • Average Low 2020–2025

    51.2 °F

  • Average 2020–2025

    63.3 °F

  • Average High 2020–2025

    76.1 °F
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