Dallas Weather in January

January's weather is the year's coldest at Dallas, Texas. Still, most days are mild and a few even warm. Some nights can get quite chilly now. Yet Dallas often has no snow this month.

This page gives detailed information on the typical January temperature, precipitation, sun, humidity, wind and storms for Dallas. The temperature, precipitation and wind speed numbers here are historical averages based on climate data gathered at the Dallas Love Field Airport, located a few miles from downtown Dallas. The rest of the measurements are averages from the nearby Dallas - Fort Worth International Airport.

Temperature Weather iconTemperature

58 °F January average high 14 °C
38 °F January average low 3 °C

January is the coldest month overall for Dallas, with the 6th to 10th its chilliest days. These have daily highs averaging 57 degrees Fahrenheit (14 degrees Celsius) and lows of 37 °F (3 °C).

14 days 60 °F max. or more (16 °C)
20 days 40 °F min. or less (4 °C)

Most days during January, Dallas has a daytime temperature of over 40 °F (4 °C). The city averages 5 days this month when the thermometer reaches into the 70s °F (over 21 °C). In some years, one of those days reaches the 80s F (above 27 °C).

The thermometer dips to below freezing on an average of 9 nights. Often one of those nights in the month gets as cold as 20 °F (-8 °C).

Rainy Weather iconPrecipitation

2.6 in total precipitation 66 mm
7 days of rain

Half the time, Dallas receives 1.3 to 3.6 inches (33 to 92 mm) of rainfall in January. One in four years has drier weather, while another one in four is wetter.

Although snow is possible now, in most years January is free of snow. Dallas averages a January snowfall of half an inch (1 cm) or more in one out of four years.

Sunny Weather iconSun

52 % sunshine
10 days clear skies

January is one of the cloudiest months for Dallas. The sun's rays reach the ground during 52 percent of daylight hours on average, for a total of 166 hours in the month. Typically on 10 days this month the sky is mainly clear, with at most 30 percent cloud cover.

Sunlight in January at Dallas lasts for 10 hours and 16 minutes a day on average. The shortest day of the month is the 1st with 10 hours and 3 minutes of daylight. By the end of the month, the days have lengthened to 10:37 from sunrise to sunset. These durations can vary by a minute or two from year to year.

Humid Weather iconHumidity

68 % January average humidity

The relative humidity in Dallas during January usually peaks at 79 percent in the morning then drops to 52 percent by mid afternoon.

Local Time12 am3 am6 am9 am12 pm3 pm6 pm9 pm
Humidity % 73 77 79 76 60 52 57 67

Windy Weather iconWind

8.8 mph January wind speed average 14.2 kph

January is less windy than most other months in Dallas.

Stormy Weather iconStorms

2 days rainfall of 0.5 inches (13 mm) or more
1 day with thunderstorms in January

The weather data here are long-term averages provided by the US National Centers for Environmental Information (NCEI). Temperature and precipitation are 1991-2020 normals while humidity and thunderstorms are 1961-1990 normals.

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