George J. Hatfield State Recreation Area Weather Forecast

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    • 51

    Increasing Clouds

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    Dense Fog

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    Rain Likely

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    Rain Likely

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    Rain Likely

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    Chance Rain

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    Rain

Today 17 Dec Merced - Madera - Mendota

Partly sunny. A 20 percent chance of rain early in the morning. Patchy dense fog in the morning. Highs in the mid 40s. Southeast Winds up to 5 Mph shifting to the north in the afternoon.

Tonight 17 Dec Merced - Madera - Mendota

Partly cloudy early in the evening then becoming mostly cloudy. Patchy dense fog until early morning. Areas of dense fog late in the night. Near steady temperature in the mid 40s. North Winds up to 5 Mph shifting to the northeast after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

George J. Hatfield State Recreation Area Temperature Statistics

December Temperature

Modesto City-County Airport - Harry Sham Field (18.6 miles)

  • Lowest 4 December, 2025

    36 °F

  • Average December

    42.7 °F

  • Highest 3 December, 2025

    54 °F

Climate (2020–Present)

Modesto City-County Airport - Harry Sham Field (18.6 miles)

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  • Average Low 2020–2025

    51.4 °F

  • Average 2020–2025

    63.3 °F

  • Average High 2020–2025

    75.9 °F
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