Dumas (TX) Temperature by Month

Dumas, Texas, United States of America has an average annual maximum temperature of 22°C (72°F), ranging from 9°C (48°F) in December to 34°C (93°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

The climate in Dumas is known for significant temperature differences throughout the year. At night, this contrast is just as clear, with lows ranging from 19°C (66°F) in July to -6°C (21°F) in December.

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

Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. July, the warmest month, sees 353 hours of sunshine.

The chart below shows the average temperature throughout the year:

Dumas's average annual maximum temperature is 22°C (72°F). To put that in context, here's how it compares to a few well-known destinations:

Seville, Spain averages 23°C (73°F) a year, one of the warmer cities in Western Europe, with long hot summers.

On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.

Chicago, USA averages 15°C (59°F) annually, known for extreme seasonal swings, from bitterly cold winters to warm summers.

Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate, hot dry summers and mild wet winters.

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 Dumas, December is the coolest month, with average highs of 9°C (48°F) and humidity around 58%, considered moderate. In July, the warmest month, temperatures average 34°C (93°F) with 52% humidity, conditions that feel moderate. 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 Dumas this rarely lasts long on the ground.

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