Currently: 56 °F. Sunny. (Weather station: Portland-Hillsboro Airport, USA). See more current weatherAnnual Weather Averages in City of Hillsboro
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in City of Hillsboro
High Temp: 82 °F
Low Temp: 34 °F
Mean Temp: 53 °F
Precipitation: 3.02"
Humidity: 75%
Dew Point: 44 °F
Wind: 7 mph
Pressure: 30.06 "Hg
Visibility: 9 mi
January Climate & Weather Averages in City of Hillsboro
High Temp: 47 °F
Low Temp: 34 °F
Mean Temp: 41 °F
Precipitation: 5.62"
Humidity: 87%
Dew Point: 37 °F
Wind: 7 mph
Pressure: 30.10 "Hg
Visibility: 7 mi
February Climate & Weather Averages in City of Hillsboro
High Temp: 51 °F
Low Temp: 34 °F
Mean Temp: 42 °F
Precipitation: 3.89"
Humidity: 82%
Dew Point: 37 °F
Wind: 7 mph
Pressure: 30.08 "Hg
Visibility: 9 mi
March Climate & Weather Averages in City of Hillsboro
High Temp: 56 °F
Low Temp: 37 °F
Mean Temp: 46 °F
Precipitation: 3.70"
Humidity: 78%
Dew Point: 39 °F
Wind: 8 mph
Pressure: 30.07 "Hg
Visibility: 10 mi
April Climate & Weather Averages in City of Hillsboro
High Temp: 61 °F
Low Temp: 40 °F
Mean Temp: 50 °F
Precipitation: 2.55"
Humidity: 73%
Dew Point: 41 °F
Wind: 8 mph
Pressure: 30.06 "Hg
Visibility: 10 mi
May Climate & Weather Averages in City of Hillsboro
High Temp: 68 °F
Low Temp: 45 °F
Mean Temp: 57 °F
Precipitation: 1.95"
Humidity: 69%
Dew Point: 46 °F
Wind: 7 mph
Pressure: 30.04 "Hg
Visibility: 11 mi
June Climate & Weather Averages in City of Hillsboro
High Temp: 73 °F
Low Temp: 50 °F
Mean Temp: 61 °F
Precipitation: 1.30"
Humidity: 67%
Dew Point: 50 °F
Wind: 7 mph
Pressure: 30.04 "Hg
Visibility: 11 mi
July Climate & Weather Averages in City of Hillsboro
High Temp: 82 °F
Low Temp: 53 °F
Mean Temp: 67 °F
Precipitation: 0.37"
Humidity: 61%
Dew Point: 53 °F
Wind: 7 mph
Pressure: 30.03 "Hg
Visibility: 11 mi
August Climate & Weather Averages in City of Hillsboro
High Temp: 82 °F
Low Temp: 52 °F
Mean Temp: 67 °F
Precipitation: 0.46"
Humidity: 62%
Dew Point: 53 °F
Wind: 6 mph
Pressure: 30.00 "Hg
Visibility: 11 mi
September Climate & Weather Averages in City of Hillsboro
High Temp: 76 °F
Low Temp: 48 °F
Mean Temp: 62 °F
Precipitation: 1.46"
Humidity: 68%
Dew Point: 50 °F
Wind: 5 mph
Pressure: 30.01 "Hg
Visibility: 10 mi
October Climate & Weather Averages in City of Hillsboro
High Temp: 63 °F
Low Temp: 42 °F
Mean Temp: 52 °F
Precipitation: 3.19"
Humidity: 80%
Dew Point: 46 °F
Wind: 5 mph
Pressure: 30.08 "Hg
Visibility: 8 mi
November Climate & Weather Averages in City of Hillsboro
High Temp: 52 °F
Low Temp: 37 °F
Mean Temp: 45 °F
Precipitation: 5.34"
Humidity: 87%
Dew Point: 41 °F
Wind: 6 mph
Pressure: 30.09 "Hg
Visibility: 7 mi
December Climate & Weather Averages in City of Hillsboro
High Temp: 46 °F
Low Temp: 34 °F
Mean Temp: 40 °F
Precipitation: 6.39"
Humidity: 88%
Dew Point: 36 °F
Wind: 7 mph
Pressure: 30.12 "Hg
Visibility: 7 mi