Climate almanac

San Dimas

California, US · 34.11°, -117.81°

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What is the climate like in San Dimas?

The best time to visit San Dimas is typically April – November, with trip comfort peaking in July (9.3/10). San Dimas is warmest in August, when daily highs average 89°F (31°C), and coolest in January, when lows fall to about 45°F (7°C). The wettest month is typically January and the driest is July; the year sees roughly 18 in of precipitation.

  • Best time to visitApril – November — comfort peaks in July (9.3/10)
  • Warmest monthAugust — average high 89°F (31°C)
  • Coolest monthJanuary — average low 45°F (7°C)
  • Wettest monthJanuary (3.7 in)
  • Driest monthJuly (0.0 in)
  • Annual precipitation18 in