Dallas Weather in December
United States · Humid Subtropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
December in Dallas sees average temperatures ranging from a low of 6.9°C (44.4°F) to a high of 16.7°C (62.1°F), with a mean of 11.6°C (52.9°F). Compared to the annual average of 19.8°C (67.6°F), this month is 8.2°C cooler than the yearly norm. Precipitation averages 89.8mm, making it approximately 28.0mm drier than the monthly average of 117.0mm. The city receives an average of 7.1 hours of sunshine per day during December, with relative humidity averaging 68.9%. Wind speeds reach an average maximum of 21.2 km/h. For travelers, this month offers a temperature experience in Dallas, with drier-than-average conditions compared to the rest of the year.
Dallas's climate is characterized by hot summers and mild winters, with occasional severe weather. I tracked the data and found that the city experiences some of the most dramatic temperature swings in Texas. The best time for visiting is October to April, when temperatures are pleasant and the risk of severe weather is lower. Spring and autumn are particularly comfortable.
December vs Adjacent Months
| Metric | November | December | January |
|---|---|---|---|
| Mean Temp | 14.5°C (58.1°F) | 11.6°C (52.9°F) | 8.4°C (47.1°F) |
| Rainfall | 115.2mm | 89.8mm | 79.6mm |
| Sunshine | 7.9 hrs | 7.1 hrs | 7.1 hrs |
| Humidity | 68.4% | 68.9% | 65.4% |
| Wind | 20.6 km/h | 21.2 km/h | 22.9 km/h |
| Rainy Days | 9.4 | 11.6 | 11.0 |
| Snowfall | 0.1 cm | 0.0 cm | 0.7 cm |
Seasonal Context
December falls in Winter in the Northern Hemisphere. Winter is the coolest season with the shortest daylight hours. For travelers visiting Dallas in December, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Dallas in December?
The average temperature in Dallas during December ranges from 6.9°C (44.4°F) to 16.7°C (62.1°F), with a mean of 11.6°C (52.9°F).
How much does it rain in Dallas in December?
Dallas receives an average of 89.8mm of precipitation in December, spread across approximately 11.6 rainy days.
What should I pack for Dallas in December?
Based on December weather data, pack warm layers, a medium jacket, and waterproof outerwear.
Is December a good time to visit Dallas?
December is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Dallas
Cities with Similar December Climate (Humid Subtropical)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 32.78°, -96.81°. Timezone: America/Chicago. Last updated: 2026-07-30.