In October, Hillsboro typically sees daytime highs of 17.1°C and overnight lows around 5.9°C. Compared to the annual average high of 16.4°C, October runs +0.8°C.
October in Hillsboro averages a daytime high of 17.1°C and an overnight low of 5.9°C.
October runs +0.8°C compared to Hillsboro's annual average high of 16.4°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 17.1°C and cooler evenings around 5.9°C.