National Weather Service Dallas/Fort Worth  

Dallas/Fort Worth - Normal, Means, and Extremes

POR - period of record (if less than entire climate record)

Note:  If multiple extreme events occurred, year of latest occurrence is listed.

Temperature (&#176F)
  POR Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
 Normal Daily Maximum 30 54.1 60.1 68.3 75.9 83.2 91.1 95.4 94.8 87.7 77.9 65.1 56.5 75.8
 Mean Daily Maximum 65 54.8 59.4 67.7 75.8 83.3 91.1 95.6 95.9 88.3 78.7 66.4 58.1 76.3
 Highest Daily Maximum
 Year of Occurrence		 93°
1911		 96°
1904		 100°
1916		 101°
2006		 107°
1927		 113°
1980		 110°
1998		 112°
1936		 111°
2000		 106°
1951		 89°
2005		 90°
1951		 113°
Jun 1980
 Mean of Extreme Maximums 65 76.3 80.0 85.1 89.2 94.2 98.4 102.5 103.2 98.6 92.5 83.0 77.4 90.0
 Normal Daily Minimum 30 34.0 38.7 46.4 54.0 63.0 70.7 74.6 74.0 67.2 56.4 45.1 36.8 55.1
 Mean Daily Minimum 65 34.2 37.9 45.5 54.3 63.1 70.5 74.5 74.2 66.9 56.5 45.0 37.2 55.0
 Lowest Daily Minimum
 Year of Occurrence		 -2°
1949		 -8°
1899		 10°
1943		 29°
1989		 34°
1903		 48°
1903		 56°
1905		 55°
1915		 40°
1942		 24°
1917		 19°
1950		 -1°
1989		 -8°
Feb 1899
 Mean of Extreme Minimums 65 16.8 21.7 28.0 37.9 49.9 60.6 67.8 66.3 53.1 40.6 28.9 20.6 41.0
 Normal Dry Bulb 30 44.1 49.4 57.4 65.0 73.1 80.9 85.0 84.4 77.5 67.2 55.1 46.7 65.5
Mean  Dry Bulb 65 44.5 48.6 56.6 65.1 73.2 80.9 85.1 85.1 77.7 67.6 55.7 47.6 65.6
 Wet Bulb 24 40.1 43.6 50.1 57.5 66.1 71.6 73.4 72.7 67.6 59.2 49.7 41.8 57.8
 Dew Point 24 35.1 38.4 44.7 52.3 62.6 68.3 69.0 68.0 63.0 54.6 44.9 36.7 53.1
 
Normal
Number
of Days
with...		  Maximum ≥ 90° 30 0.0 0.1 0.2 0.8 5.6 20.2 28.2 27.1 15.7 3.0 0.0 0.0 100.9
 Maximum ≤ 32° 30 1.5 0.9 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.1 3.6
 Minimum ≤ 32° 30 13.5 6.9 2.0 0.2 0.0 0.0 0.0 0.0 0.0 0.1 2.9 10.0 35.6
 Minimum ≤ 0° 30 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 * 0.0


Degree Days
  POR Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
 Normal  Heating 30 650 448 248 74 13 0 0 0 2 52 312 571 2370
 Cooling 30 3 7 10 72 265 478 621 601 376 118 15 2 2568


Relative Humidity (%)
  POR Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
 Normal 30 68 66 64 64 70 67 60 59 64 66 69 70 66
 Midnight CST or 1:00 a.m. CDT 30 74 71 69 71 78 74 67 66 71 73 74 73 72
 6:00 a.m. CST or 7:00 a.m. CDT 30 80 80 79 81 87 86 81 80 83 83 82 80 82
 Noon CST or 1:00 p.m. CDT 30 61 58 56 55 59 55 49 49 54 55 58 60 56
 6:00 p.m. CST or 7:00 p.m. CDT 30 59 55 51 51 57 52 45 45 51 54 60 60 53



Sunshine
  POR Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
 Percent of Possible Sunshine 17 52 54 58 61 57 67 75 73 67 63 57 52 61


Weather
  POR Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Number of
Days with...		  Heavy Fog
 (Visibility ≤ 1/4 mi.)		 44 2.2 1.3 0.9 0.5 0.3 0.1 0.1 0.0 0.1 0.7 1.5 2.1 9.8
 Thunderstorms 60 1.3 2.0 4.1 5.7 7.6 6.4 4.7 4.7 3.4 3.2 1.9 1.2 46.2


Pressure ("Hg)
  POR Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean  Station Pressure 24 29.50 29.46 29.38 29.32 29.29 29.30 29.35 29.31 29.36 29.40 29.45 29.50 29.39
 Sea-Level Pressure 24 30.14 30.09 30.01 29.94 29.91 29.91 29.96 29.96 29.97 30.03 30.08 30.13 30.01


Wind (mph)
  POR Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
 Mean Speed 24 10.8 11.1 12.0 12.0 11.2 10.2 10.0 8.6 8.7 9.7 10.7 10.3 10.4
 Prevailing Direction 11 190° 190° 170° 190° 170° 170° 190° 190° 170° 170° 190° 190° 190°
 
Maximum
2-Minute		  Speed
 Direction
 Year of Occurrence		 12 41
290°
1996		 51
230°
2000		 48
300°
2000		 52
270°
2007		 52
170°
2006		 53
320°
2007		 41
060°
2002		 47
330°
1996		 43
350°
2005		 46
230°
2001		 43
310°
2006		 39
310°
2003		 53
320°
Jun 2007
Maximum
5-Second		  Speed
 Direction
 Year of Occurrence		 12 51
190°
1996		 78
230°
2000		 74
270°
2000		 64
260°
2000		 67
150°
2006		 64
330°
2008		 53
060°
2002		 47
340°
2002		 49
350°
2005		 54
270°
2004		 54
310°
2006		 47
280°
2003		 78
230°
Feb 2000


Rain (in.)
  POR Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
 Normal 30 1.90 2.37 3.06 3.20 5.15 3.23 2.12 2.03 2.42 4.11 2.57 2.57 34.73
 Monthly Maximum
 Year of Occurrence		 9.07
1932		 7.40
1997		 7.39
2002		 17.64
1922		 13.66
1982		 11.58
1928		 11.13
1973		 10.33
1915		 10.80
1932		 14.18
1981		 7.94
1918		 8.75
1991		 17.64
Apr 1922
 Minimum Monthly
 Year of Occurrence		 T
1986		 0.01
1918		 0.02
1925		 0.11
1987		 0.22
1911		 T
1952		 0.00
1993		 0.00
2000		 0.09
1984		 T
1975		 0.00
1903		 T
1950		 0.00
Aug 2000
 Max in 24 hours
 Year of Occurrence		 54 3.46
2002		 4.06
1965		 4.39
1977		 4.55
1957		 5.34
1989		 3.16
2007		 4.01
2004		 4.05
1976		 4.76
1965		 5.91
1959		 2.83
1964		 4.22
1991		 5.91
Oct 1959
 
 Number of
 Days with...		  Precipitation > T 30 7.2 6.3 7.8 7.1 9.3 7.2 4.3 4.5 5.9 6.7 6.4 6.5 79.2
 Precipitation ≥ 0.10 30 4.0 3.9 4.8 4.9 6.6 5.1 3.3 2.7 4.0 4.8 4.4 4.0 52.5
 Precipitation ≥ 0.50 30 1.1 1.6 2.1 2.4 3.6 2.4 1.6 1.2 1.7 2.6 1.8 1.7 23.8
 Precipitation ≥ 1.00 30 0.3 0.7 0.8 1.1 1.8 0.8 0.6 0.6 0.8 1.4 0.7 0.6 10.2


Snowfall (in.)
  POR Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
 Normal 30 0.8 1.2 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.* 0.2 0.2 2.5
 Maximum Monthly
 Year of Occurrence		 12.1
1964		 13.5
1978		 6.1
1942		 T
2007		 T
1993		 5.0
1976		 5.5
1898		 13.5
Feb 1978
 Maximum in 24 Hours
 Year of Occurrence		 12.1
1964		 7.5
1978		 6.0
1924		 T
2007		 T
1993		 5.0
1976		 5.5
1898		 12.1
Jan 1964
 

Number of
Days with...

  Snowfall 30 2.4 1.7 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.* 0.4 1.4 6.4
 Snowfall > T 30 0.5 0.7 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.4 1.8
 Snowfall ≥ 1.0 30 0.4 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 1.0

Back to DFW Climatology  To the Front Page