Hillsboro Weather in September

Hillsboro in September averages 33°C (91°F) during the day and 19°C (66°F) at night. Keep in mind that quite a bit of rainfall is expected this month.

Rainfall in Hillsboro in September

Past climate data indicates that roughly 6 days will see rain, totalling around 88 mm (3.5 in) for the month. When rain does fall this month, it tends to come down hard. The low number of rain days makes each shower more significant.

Temperature in Hillsboro in September

September in Hillsboro sees highs of 33°C (91°F) and lows of 19°C (66°F) overnight. Sunshine and humidity can make it feel even warmer than the raw temperature suggests. With overnight lows of 19°C (66°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Hillsboro in September

With approximately 229 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

If you prefer enjoying temperate temperatures and rain-free days, April and November typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.