Dallas Temperatures: Averages by Month

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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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