Dallas Temperatures: Averages by Month





The numbers here tell you how hot and cold the weather usually is in Dallas, Texas during each month of the year.

The average high and low temperatures are listed below by month and annually for Dallas, in both degrees Fahrenheit and Celsius.

Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.

To find out how often it rises over 70, 80 or 90 °F each month in Dallas, scroll down farther. There are also counts of nights with warm temperatures and days with cold weather.

All the numbers are averages, based on climate data gathered from 1981 to 2010.

Average Dallas temperatures
High °F Low °F   High °C Low °C
57 37 January 14 3
61 41 February 16 5
69 49 March 20 9
77 56 April 25 13
84 65 May 29 19
92 73 June 33 23
96 77 July 36 25
96 77 August 36 25
89 69 September 32 21
79 58 October 26 15
67 48 November 20 9
58 39 December 14 4
77 57 Year 25 14

Days of Hot Weather in Dallas

From May to September, Dallas has daily temperatures of at least 70 °F. Typically 17 of those days have 100-plus degree weather.

Even winter days often reach 70 degrees. For only six times a year on average does the highest temperature of the day in Dallas stay below 40.

Days per month in Dallas of at least 70, 80 or 90 °F
  70 °F
21 °C
80 °F
27 °C
90 °F
32 °C
January 5 0 0
February 7 1 0
March 15 4 0
April 24 11 1
May 30 23 6
June 30 29 20
July 31 31 28
August 31 31 27
September 30 26 14
October 26 15 2
November 13 3 0
December 4 0 0
Year 246 175 97

Number of Warm Nights a Month

Most summer nights in Dallas stay above 69 °F. From April to October, the nighttime temperature remains above 39 degrees.

Average number of days monthly in Dallas that stay above 50, 60 or 70 °F
  50 °F
10 °C
60 °F
16 °C
70 °F
21 °C
January 3 1 0
February 5 1 0
March 13 4 0
April 23 11 1
May 31 25 8
June 30 30 22
July 31 31 30
August 31 31 29
September 30 26 16
October 26 14 2
November 12 4 0
December 4 1 0
Year 237 177 108

How Often Dallas Has Cold Temperatures

Freezing temperatures overnight can happen in Dallas anytime from November to March, normally totalling 23 days a year. For three nights a winter, the lows drop down to 20 degrees Fahrenheit.

Most frosty nights in Dallas are followed by daytime thaws. Only on two days a year, typically, does the day's high stay below freezing.

Reference

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

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