Hillsboro

What is the climate like in Hillsboro?

The best time to visit Hillsboro is typically August – October, with trip comfort peaking in September (7.3/10). Hillsboro is warmest in July, when daily highs average 86°F (30°C), and coolest in January, when lows fall to about 24°F (-4°C). The wettest month is typically April and the driest is December; the year sees roughly 45 in (1154 mm) of precipitation.

• Best time to visitAugust – October — comfort peaks in September (7.3/10)
• Warmest monthJuly — average high 86°F (30°C)
• Coolest monthJanuary — average low 24°F (-4°C)
• Wettest monthApril (5.6 in (141 mm))
• Driest monthDecember (2.4 in (61 mm))
• Annual precipitation45 in (1154 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromHillsboro, 0 km away (1895-2026)