ClimateForecastAprilMay >>

Climate in Hillsboro (Oregon), United States of America

The graphs below show the monthly weather averages over the year.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Weather Forecasts for Hillsboro (OR)

Thu   Apr 25
13°C | 10°C
S 22 km/h
13 mm
broken clouds and rain

broken clouds and rain

Fri   Apr 26
14°C | 9°C
S 14 km/h
4.2 mm
broken clouds and rain

broken clouds and rain

Sat   Apr 27
13°C | 7°C
S 14 km/h
1.8 mm
overcast and rain

overcast and rain

The best time of year to visit Hillsboro in the United States of America

During the months of June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:

  • Which months have the greatest rainfall in Hillsboro?
    Most rainfall (rainy season) is seen in November and December.
  • Does Hillsboro have a dry season?
    Yes, the months of July and August are very dry.
  • Which is the warmest month in Hillsboro?
    August has an average maximum temperature of 28°C and is the warmest month of the year.
  • Which is the coldest month in Hillsboro?
    The coldest month is December with an average maximum temperature of 7°C.
  • Which is the wettest month in Hillsboro?
    December tops the wettest month list with 185 mm of rainfall.
  • Which is the driest month in Hillsboro?
    July is the driest month with 9 mm of precipitation.
  • Which is the sunniest month in Hillsboro?
    July is the sunniest month with an average of 332 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.