January weather forecast
Dallas, TX

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Dallas, Texas, modern city skyscrapers, just before sunset
Dallas, Texas, modern city skyscrapers, just before sunset

Weather in January

In Dallas, the year starts with a balanced combination of cool temperatures, ample sunlight, and sporadic showers, gradually turning into a comfortable climate. Slight temperature differences from December carry over to January, paving the way to a warmer February. The wind speed is moderate, creating a refreshing contrast against the cooler climate. Winter’s hallmark is its relatively lower quantities of snowfall, yet the increase from 0 in December to 0.16" (4mm) in January may be anticipated by snow lovers. Despite the chilly factor, citizens can enjoy the outdoors thanks to stable visibility conditions and a reasonable amount of daylight hours.

Temperature

January is Dallas's coldest month, registering average high temperatures of 54.3°F (12.4°C) and lows of 39.2°F (4°C).

Humidity

The average relative humidity in January is 64%.

Rainfall

In Dallas, during January, the rain falls for 6.7 days and regularly aggregates up to 1.69" (43mm) of precipitation. Throughout the year, there are 141.2 rainfall days, and 30.12" (765mm) of precipitation is accumulated.

Snowfall

January, February, November and December are months with snowfall. In Dallas, during January, snow falls for 0.4 days and regularly aggregates up to 0.16" (4mm) of snow. In Dallas, during the entire year, snow falls for 2.2 days and aggregates up to 0.71" (18mm) of snow.

Daylight

In January, the average length of the day in Dallas is 10h and 17min.
On the first day of January, sunrise is at 7:29 am and sunset at 5:31 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 5:58 pm CST.

Sunshine

The average sunshine in January is 5.9h.

UV index

January and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: In January, a daily UV index of 3 turns into the following recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
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Frequently asked questions

What is the coldest month in Dallas?

Dallas's temperature records reveal January as the coldest month, marked by average highs of 54.3°F (12.4°C) and lows of 39.2°F (4°C).

What is the usual temperature for Dallas in January?

Dallas in January has an average high-temperature of 54.3°F (12.4°C) and an average low-temperature of 39.2°F (4°C).

What is the average humidity in January in Dallas?

In January, the average relative humidity is 64%.

How many days does it rain in January in Dallas?

In Dallas, during January, the rain falls for 6.7 days and regularly aggregates up to 1.69" (43mm) of precipitation.

How many days does it snow in January in Dallas?

In Dallas, during January, snow falls for 0.4 days and regularly aggregates up to 0.16" (4mm) of snow.

How many hours of daylight does Dallas have in January?

In January, the average day length in Dallas is 10h and 17min.

What time are sunrise and sunset in January in Dallas?

In January, on the first day of the month, sunrise is at 7:29 am and sunset at 5:31 pm. On the last day of the month, in Dallas, sunrise is at 7:22 am and sunset at 5:58 pm CST.

How many hours of sunshine does Dallas have in January?

In January, the average sunshine duration in Dallas is 5.9h.

What are the months with the lowest UV index in Dallas?

The months with the lowest UV index are January and December, with an average maximum UV index of 3.

What is the UV index reading in January in Dallas?

In January, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Dallas, TX

Average temperature in January - Dallas, TX
  • Average high temperature in January: 54.3°F

The warmest month (with the highest average high temperature) is August (96.1°F).
The month with the lowest average high temperature is January (54.3°F).

  • Average low temperature in January: 39.2°F

The month with the highest average low temperature is August (77.2°F).
The coldest month (with the lowest average low temperature) is January (39.2°F).

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Average pressure in January
Dallas, TX

Average pressure in January - Dallas, TX
  • Average pressure in January: 30.16"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in January
Dallas, TX

Average wind speed in January - Dallas, TX
  • Average wind speed in January: 9mph

The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).

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Average humidity in January
Dallas, TX

Average humidity in January - Dallas, TX
  • Average humidity in January: 64%

The month with the highest relative humidity is May (72%).
The month with the lowest relative humidity is August (55%).

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Average rainfall in January
Dallas, TX

Average rainfall in January - Dallas, TX
  • Average rainfall in January: 1.69"

The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is February (1.61").

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Average rainfall days in January
Dallas, TX

Average rainfall days in January - Dallas, TX
  • Average rainfall days in January: 6.7 days

The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (6.7 days).

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Average snowfall in January
Dallas, TX

Average snowfall in January - Dallas, TX
  • Average snowfall in January: 0.16"

The month with the highest snowfall is February (0.43").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").

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Average snowfall days in January
Dallas, TX

Average snowfall days in January - Dallas, TX
  • Average snowfall days in January: 0.4 days

The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).

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Average daylight in January /
Average sunshine in January
Dallas, TX

Average daylight in January / Average sunshine in January - Dallas, TX
  • Average daylight in January: 10h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in January: 5h and 5min

The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

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Average sunshine days in January
Dallas, TX

Average sunshine days in January - Dallas, TX
  • Average sunshine days in January: 23.2 days

The month with the most sunshine days is January (23.2 days).
The month with the least sunshine days is May (12.2 days).

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Average UV index in January
Dallas, TX

Average UV index in January - Dallas, TX
  • Average UV index in January: 3

The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

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Average cloud cover in January
Dallas, TX

Average cloud cover in January - Dallas, TX
  • Average cloud cover in January: 30

The months with the most cloud cover are February and March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 20).

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Average visibility in January
Dallas, TX

Average visibility in January - Dallas, TX
  • Average visibility in January: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Dallas, Texas, USA

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