Hillsboro Civic Center and its public fountain plaza

Weather · May

Hillsboro weather in May

Average highs of 69°F, lows of 45°F and 2.0 in of rain, from 30 years of weather records.

May is Hillsboro’s 5th warmest month, with average highs of 69°F and lows of 45°F. That is 8° warmer than April, and 5° above the yearly average high.

Average high
69°F
Average low
45°F
Precipitation
2.0 in
Wet days
12
Sunrise · sunset
5:41 AM · 8:34 PM

May across the year

  1. 47°34°Jan
  2. 51°34°Feb
  3. 56°37°Mar
  4. 61°39°Apr
  5. 69°45°May
  6. 74°49°Jun
  7. 82°52°Jul
  8. 82°52°Aug
  9. 76°48°Sep
  10. 64°41°Oct
  11. 53°37°Nov
  12. 46°33°Dec

High and low Rain

What to wear in May

  • Mild days: dress in layers, with a light jacket or sweater for mornings and evenings.
  • Pack an umbrella or rain jacket: rain or snow falls on about 12 days this month.

May is good for

See Hillsboro

A look around town before you go.

Hillsboro, Oregon (Orenco Station, Downtown) 4K Walking Tour Binaural Audio video thumbnail

A WALK AROUND TOWN

Hillsboro, Oregon (Orenco Station, Downtown) 4K Walking Tour Binaural Audio

A recorded walk through Orenco Station and downtown Hillsboro, showing neighborhood streets and civic surroundings.

Watch on YouTube ↗
Walking Tour of "The Streets of Tanasbourne" in Hillsboro, Oregon video thumbnail

A WALK AROUND TOWN

Walking Tour of "The Streets of Tanasbourne" in Hillsboro, Oregon

A creator-led walk around the Streets of Tanasbourne shopping area in Hillsboro.

Watch on YouTube ↗

May compared with the months around it

MonthHighLowRain
April61°F39°F2.6 in
May69°F45°F2.0 in
June74°F49°F1.3 in

Planning a trip? See the best time to visit Hillsboro and today’s forecast.

Questions

How hot does it get in Hillsboro in May?

Average highs are 69°F and average lows 45°F, for a daily mean of 57°F. Individual days run hotter or colder than these 30-year averages.

Does it rain in Hillsboro in May?

May averages 2.0 in of precipitation over about 12 days with at least 0.01 in. It is the 8th wettest month of the year.

What time is sunset in Hillsboro in May?

Around mid-May the sun rises about 5:41 AM and sets about 8:34 PM, for roughly 14.9 hours of daylight.

Is May a good time to visit Hillsboro?

The mildest months for visiting are June, July, August. May is mild.

NOAA U.S. Climate Normals 1991–2020, Portland-Hillsboro Ap station (1.2 mi from downtown). Sunrise and sunset are calculated for May 15 at the city’s coordinates.

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