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Climate almanac

Mission Viejo

California, United States · 33.60°, -117.67°

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What is the weather like in Mission Viejo in December?

In December, Mission Viejo is typically 64°F (18°C) during the day and 53°F (12°C) at night. The month brings about 2.2 in (57 mm) of precipitation in total.

  • Average high64°F (18°C)
  • Average low53°F (12°C)
  • Precipitation2.2 in (57 mm)
  • Clear or mostly clear days13
  • Based on2016-2025 daily ERA5 reanalysis data (10-year normals)