Hillsboro Civic Center and its public fountain plaza

Weather · December

Hillsboro weather in December

Average highs of 46°F, lows of 33°F and 6.0 in of rain, from 30 years of weather records.

December is Hillsboro’s coldest month, with average highs of 46°F and lows of 33°F. That is 6° cooler than November, and 17° below the yearly average high.

Average high
46°F
Average low
33°F
Precipitation
6.0 in
Wet days
20
Sunrise · sunset
7:45 AM · 4:28 PM

December 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 December

  • Cool days: a warm jacket and long pants, plus layers for the swing between morning and afternoon.
  • Pack an umbrella or rain jacket: rain or snow falls on about 20 days this month.

December is good for

What’s on in Hillsboro in December

See all upcoming events and school days off.

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 ↗

December compared with the months around it

MonthHighLowRain
November53°F37°F5.4 in
December46°F33°F6.0 in
January47°F34°F5.3 in

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

Questions

How hot does it get in Hillsboro in December?

Average highs are 46°F and average lows 33°F, for a daily mean of 40°F. Individual days run hotter or colder than these 30-year averages.

Does it rain in Hillsboro in December?

December averages 6.0 in of precipitation over about 20 days with at least 0.01 in. It is the wettest month of the year.

What time is sunset in Hillsboro in December?

Around mid-December the sun rises about 7:45 AM and sets about 4:28 PM, for roughly 8.7 hours of daylight.

Is December a good time to visit Hillsboro?

The mildest months for visiting are June, July, August. December is cold, with Christmas lights and New Year’s Eve events.

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

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