Dallas (OR) Temperature by Month

Dallas, Oregon, United States of America has an average annual maximum temperature of 17°C (63°F), ranging from 7°C (45°F) in December to 28°C (82°F) in August. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

Visitors to Dallas can expect significant temperature changes throughout the year. Nighttime temperatures also vary widely, ranging from 11°C (52°F) in August to 1°C (34°F) in December.

The chart below illustrates the average maximum day and minimum night temperatures in Dallas by month:

Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. August, the warmest month, sees 321 hours of sunshine.

The chart below shows the average temperature throughout the year:

Dallas'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:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

Queenstown, New Zealand averages 10°C (50°F) annually, remember seasons are flipped, so its coldest months fall in June and July.

San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation, summers are often cool and foggy, winters mild.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

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.

Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.

Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.

For more on Dallas's weather, including monthly rainfall, sunshine hours, and humidity, visit our Dallas climate page.