Dallas TX Average Temperatures by Month - Current Results

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 80, 90 or 100 °F each month in Dallas, scroll down farther. There are also counts of nights with warm temperatures and days with cold weather.

The first set of high and low temperatures are averages for 2010 to 2019. Everything else here is based on 1991 to 2020 weather.

10-year temperature averages for Dallas, 2010 to 2019
High °F Low °F   High °C Low °C
57 37 January 14 3
61 41 February 16 5
71 50 March 21 10
78 58 April 26 14
85 66 May 30 19
94 75 June 34 24
97 78 July 36 26
98 79 August 37 26
92 72 September 33 22
80 59 October 27 15
68 48 November 20 9
60 41 December 15 5
78 59 Year 26 15
30-year temperature averages for Dallas, 1991 to 2020
High °F Low °F   High °C Low °C
58 38 January 14 3
62 42 February 17 6
70 49 March 21 10
77 57 April 25 14
85 66 May 29 19
93 74 June 34 23
97 78 July 36 25
97 77 August 36 25
90 70 September 32 21
80 59 October 26 15
68 48 November 20 9
59 40 December 15 4
78 58 Year 26 15

Days of Hot Weather in Dallas

For most of May to September, Dallas has daily temperatures of at least 80 °F. Typically 22 of those days have 100-plus degree weather.

Days per month in Dallas of at least 80, 90 or 100 °F
  80 °F
27 °C
90 °F
32 °C
100 °F
38 °C
January 1 0 0
February 2 0 0
March 5 0 0
April 13 1 0
May 25 8 0
June 30 22 2
July 31 29 8
August 31 28 11
September 27 17 2
October 17 4 0
November 3 0 0
December 1 0 0
Year 184 108 22

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 nights each month 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 14 4 0
April 23 11 1
May 30 25 8
June 30 30 23
July 31 31 30
August 31 31 29
September 30 27 16
October 25 14 3
November 11 4 0
December 4 1 0
Year 238 178 111

How Often Dallas Has Cold Temperatures

Freezing overnight temperatures can happen in Dallas anytime from November to March, normally totalling 23 days a year. Typically one or two nights a winter, have lows that drop down to 20 degrees Fahrenheit or less.

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

Days per month on average in Dallas when the minimum temperature drops to 20, 32 or 40 °F or below
  20 °F
-8 °C
32 °F
0 °C
40 °F
4 °C
January 1 9 20
February 0 5 13
March 0 1 5
April 0 0 1
May 0 0 0
June 0 0 0
July 0 0 0
August 0 0 0
September 0 0 0
October 0 0 1
November 0 2 8
December 0 7 18
Year 2 23 65
References

Jay Lawrimore, Ron Ray, Scott Applequist, Bryant Korzeniewski, Matthew Menne. 2016. Global Summary of the Month and Year, Version 1.0. NOAA National Centers for Environmental Information.

NOAA National Centers for Environmental Information (NCEI). Climate Normals.