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Dallas in December: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Dallas in December will be like? Take a look at our weather guide for Dallas, based on historical data.
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December

Weather in Dallas in December 2024

OK Weather
Mild
☁️
Cloudy
If you plan to visit Dallas in December, the weather is typically alright, with an average high temperature of +15°C during the day and approximately 8 sunny days. Expect some rainy, though, as there are typically 8 rainy days in the month and around 70 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flights in one click on Avionero.

Average weather

☀️
+15°C
Avg. max. temperature
-18°C
Min.
+31°C
Max.
70 mm
Total precipitation
66%
Avg. humidity
3 m/s
Avg. wind
8 ☀️
Sunny Days
13 ⛅️
Cloudy
8 🌦
Rainy
Our opinion: Dallas has OK weather in December.

Average temperature in Dallas in December

Here are the expected maximum, average and minimum temperatures in Dallas for December based on the historical data.
Last Year
Historical Data

Going from a maximum of +26°C during the day to a minimum of -1°C during the night, the temperature in December averages around +17°C.

The average maximum temperature goes up 4% by the end of the month, compared with the beginning of the month, from +17°C to +18°C.

Is Dallas warm or cold in December?

Dallas is typically mild in December.

Maximum temperatures go down compared to the previous month from +20°C to +15°C. The minimum temperature also goes down from +9°C to +5°C.

Pack a light jacket as it will be warm in the day and cool in the evenings.

December is one of the coolest months in Dallas, here is the comparison with other months:

Climate in Dallas in December

Dallas weather looks like this, on average, in December and the surrounding months.
NovemberDecemberJanuary
Avg. temperature
+20°C+15°C+14°C
Min. temperature
-5°C-18°C-13°C
Max. temperature
+33°C+31°C+29°C
Rainfall
77 mm70 mm53 mm
Wind
3 m/s3 m/s3 m/s
Humidity
66%66%64%
Air pressure
1018 HPa1019 HPa1020 HPa
Sunny days
988
Cloudy days
111313
Rainy days
787
Snowy days
011

December typically has worse weather conditions compared to November. It’s getting colder in December. From +20°C in the day, the average maximum temperature lowers to +15°C. As December arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 77 mm to 70 mm. Humidity levels don’t change as the month goes on, averaging around 66%. The average wind speed doesn’t change much during December, staying around 3 m/s. The days becoming less sunny, going from 9 sunny days in November to 8 in December.

But maybe it is worth considering traveling in January as the weather gets better.

Wind

Wind speed in Dallas in December based on historical data.
Last Year
Historical Data

The average wind speed is 3 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Dallas is gradually decreasing during December, going from 4 m/s to 2 m/s over the course of the month.

Rain

Amount of rainfall in mm during December in Dallas based on historical data.
Last Year
Historical Data
Typically, there is a 26% chance of rain on an average day in December, with total rainfall of approximately 111 mm. The maximum amount of rainfall per day is around 61 mm, which is considered heavy rain. On average, there are about 8 rainy days during December, so prepare to bring an umbrella.
Here’s how December is compared with other months in the amount of precipitation, total mm:
Dallas wettest month is May, where a typical day has a 29% chance of precipitation and 137 mm of rainfall per day. July, on the other hand, is the driest month with a mere 23% chance of precipitation and 43 mm of rainfall per day.

Snow

Amount of snow in mm during December in Dallas based on historical data.
Last Year
Historical Data
Typically, there is a 0% chance of snow on an average day in December, with a total monthly snowfall of approximately 0 mm.

December is one of the snowiest months in Dallas.

Here’s how December is compared with other months in the amount of snow, total mm:

How was the weather last December in Dallas?

This is the weather in Dallas in December 2023:
1 December
☁️
+17°C
2 December
☁️
+19°C
3 December
☀️
+22°C
4 December
☀️
+18°C
5 December
☀️
+21°C
6 December
☀️
+18°C
7 December
☀️
+21°C
8 December
☀️
+26°C
9 December
☀️
+22°C
10 December
☀️
+14°C
11 December
☀️
+18°C
12 December
☁️
+18°C
13 December
☁️
+16°C
14 December
☁️
+18°C
15 December
🌫️
+15°C
16 December
☀️
+15°C
17 December
☀️
+21°C
18 December
☀️
+17°C
19 December
☁️
+15°C
20 December
☁️
+19°C
21 December
☁️
+17°C
22 December
🌫️
+20°C
23 December
🌫️
+18°C
24 December
🌫️
+18°C
25 December
☀️
+16°C
26 December
☀️
+13°C
27 December
☀️
+11°C
28 December
☀️
+9°C
29 December
☀️
+13°C
30 December
☀️
+18°C
31 December
☁️
+18°C
In December 2023 Dallas had 18 sunny days, 9 cloudy days, and 0 rainy days. The average maximum temperature was +17°C, with an absolute maximum of +26°C and a minimum of +9°C. The average humidity was 66%, with a maximum of 99% and a minimum of 22%. The average wind speed was 3 m/s, with a maximum of 10 m/s and a minimum of 0 m/s.
Are you planning a trip in December?

Climate Change over Years

This is how Dallas climate have been changing during last 43 years period.

The climate in Dallas in December has not changed much over the last 43 years.

The average temperature was the lowest in 1979 (+23°C) and the highest in 2012 (+27°C). The driest year was 2005 with only 460 mm of rainfall, and the wettest year was 2020 with 1551 mm.

FAQ

Frequently asked questions about the weather in Dallas in December:

Is December a good time to visit Dallas?

It’s always a good time to visit Dallas, but the weather is changeable in December, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Dallas in December?

December has mild temperatures in Dallas. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!

Is Dallas rainy in December?

Dallas is often rainy in December. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Dallas in December?

Usually, it’s not very sunny in Dallas in December, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in USA

Check out the weather for other cities in USA.

Monthly weather in Dallas

Source of the data

For this page, we’ve looked at the typical weather in Dallas, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.