Climate almanac

Hillsboro

Oregon, US · 45.52°, -122.99°

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What is the climate like in Hillsboro?

Hillsboro is warmest in August, when daily highs average 85°F (29°C), and coolest in December, when lows fall to about 37°F (3°C). The wettest month is typically December and the driest is July; the year sees roughly 51 in of precipitation.

  • Warmest monthAugust — average high 85°F (29°C)
  • Coolest monthDecember — average low 37°F (3°C)
  • Wettest monthDecember (7.9 in)
  • Driest monthJuly (0.2 in)
  • Annual precipitation51 in