Orenco (OR) Temperature by Month
Orenco, Oregon, United States of America has an average annual maximum temperature of 17°C (63°F), ranging from 8°C (46°F) in December to 28°C (82°F) in August. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Orenco Monthly Temperatures
Depending on the time of the year, temperatures range from comfortable to cold in Orenco. At night, minimum temperatures range from 13°C (55°F) in August to 2°C (36°F) in December.
The chart below illustrates the average maximum day and minimum night temperatures in Orenco by month:
Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. August, the warmest month of the year, receives 298 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Orenco vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
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Orenco vs World: Temperature Compared
Orenco's average annual maximum temperature is 17°C (63°F). To put that in context, here's how it compares to a few well-known destinations:
Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.
On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.
Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.
Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.
What Does the Temperature Feel Like in Orenco?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.
In Orenco, December is the coolest month, with average highs of 8°C (46°F) and humidity around 83% — considered very high. In August, the warmest month, temperatures average 28°C (82°F) with 65% humidity — conditions that feel high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Orenco this rarely lasts long on the ground.
For more on Orenco's weather — including monthly rainfall, sunshine hours, and humidity — visit our Orenco climate page.
