Hillsboro Weather in September

What's the weather like in Hillsboro (Oregon) in September 2024?

The climate in Hillsboro during September can be summarized as mild and reasonably dry.

September is in the fall / autumn in Hillsboro and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around 23°C (73°F), whilst at night 9°C (48°F) is normal.

Hillsboro weather averages (imperial / metric)
Daytime temperature 22.7°C 72.9°F
Nightly temperature 8.7°C 47.7°F
Average temperature 15.7°C 60.3°F
Daily sunshine 8.4 hrs
Avg rainfall 45 mm 1.8 ins
Rainy days 8 days
Sea temperature 13.3°C 55.9°F
Humidity 71%
Windspeed 11.5kph 7 mph

On average September is the 4th driest month of the year in Hillsboro with around 45mm 1.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.4 hours of sunshine per day.

September temperatures in Hillsboro

Hillsboro average temperature in September

September rainfall

Hillsboro average rain in September

September hourly sunshine

Hillsboro average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Hillsboro in September 2024.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Hillsboro weather stats

Hillsboro weather statistics
Hottest month: August 25.2°C 77.4°F
Driest month: July 16mm 0.6ins
Sunniest month: July 11.2hrs
Coldest month: January 6.9°C 44.4°F
Wettest month: December 196mm 7.7ins
Map showing location of Hillsboro (45.52289, -122.98983) Hillsboro map pin © Google

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