DFW - Annual Normals, Means, and Extremes

Heavy to Excessive Rainfall for the Southwest;

Tropical moisture from Priscilla will bring a multi-day thunderstorm, widespread heavy rainfall and flash flooding event across the Southwest/Four Corners region. Flash flooding will be a concern in burn scars, slot canyons, and urban areas. Widespread storms are expected in central/South Florida with some isolated flash flooding possible. Read More >

Dallas/Fort Worth - Normals (1991-2020), Means, and Extremes

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

Note: If multiple extreme events occurred, only the most recent occurrence may be listed.

Temperature (°F)

	POR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Normal High Temperature	30	56.5	60.9	68.6	76.1	83.6	91.5	95.6	95.8	88.6	78.4	66.6	57.9	76.8
Record High Year of Occurrence		93° 1911	96° 1904	100° 1916	101° 2006	107° 1927	113° 1980	110° 1998	112° 1936	111° 2000	106° 1951	94° 2017	90° 1951	113° Jun 1980
Average of Extreme Maximums	78	76.6	80.2	85.4	89.2	94.3	98.8	102.7	103.5	98.7	92.6	83.3	77.7

Normal Low Temperature	30	36.1	40.1	47.8	55.2	64.5	72.2	75.8	75.7	68.5	57.1	46.2	38.3	56.5
Record Low Year of Occurrence		-2° 1949	-8° 1899	10° 1943	29° 1989	34° 1903	48° 1903	56° 1924	55° 1915	40° 1942	24° 1917	19° 1950	-1° 1989	-8° Feb 1899
Average of Extreme Minimums	78	17.4	22.2	28.3	38.3	49.9	61.3	68.3	66.7	54.0	40.7	29.2	21.2

Normal Mean Temperature	30	46.3	50.5	58.2	65.6	74.0	81.9	85.7	85.7	78.5	67.7	56.4	48.1	66.6
Average Wet Bulb	37	37.2	41.3	48.2	55.5	64.1	70.0	71.4	70.6	65.9	57.0	47.4	39.6	55.7
Average Dew Point	37	37.0	40.5	47.3	54.4	63.8	69.8	70.7	69.8	65.1	56.3	46.9	38.7	55.0

Average Number of Days with...	Maximum ≥ 100°	30	0.0	0.0	0.0	0.*	0.1	1.6	7.4	9.7	1.4	0.0	0.0	0.0	20.2
Minimum ≤ 32°	30	10.6	6.2	1.9	0.*	0.0	0.0	0.0	0.0	0.0	0.1	2.3	8.1	29.2
* value rounds to 0.0 but is non-zero Degree Days
	POR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Normal	Heating	30	582	413	246	82	10	0	0	0	3	69	285	528	2220
Cooling	30	2	8	35	102	290	506	642	643	410	154	27	4	2824
Relative Humidity (%)
	POR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Normal	30	68	67	65	64	70	67	61	59	64	66	69	70	66
at Midnight CST or 1:00 a.m. CDT	30	74	71	69	71	78	74	67	66	71	73	74	73	72
at 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
at Noon CST or 1:00 p.m. CDT	30	61	58	56	55	59	55	49	49	54	55	58	60	56
at 6:00 p.m. CST or 7:00 p.m. CDT	30	59	55	51	51	57	52	45	45	51	55	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...	Dense Fog (Visibility ≤ 1/4 mile)	57	2.1	1.1	0.9	0.5	0.3	0.1	0.1	0.1	0.1	0.7	1.3	2.1	9.4
Thunderstorms	73	1.4	2.0	4.0	5.8	7.6	6.3	4.7	4.7	3.3	3.3	1.9	1.3	46.3
Pressure (inches of mercury)
	POR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Average	Station Pressure	37	29.50	29.45	29.38	29.31	29.29	29.29	29.34	29.31	29.35	29.40	29.45	29.48	29.38
Sea Level Pressure	37	30.14	30.08	30.01	29.93	29.90	29.90	29.95	29.94	29.97	30.02	30.08	30.12	30.00
Wind (mph)
	POR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Average Speed	37	10.7	11.3	12.1	12.2	11.4	10.5	9.9	8.7	8.6	9.8	10.6	10.3	10.5
Prevailing Direction	24	190°	170°	170°	170°	170°	170°	170°	170°	170°	170°	190°	190°	170°

Maximum 2-Minute	Speed Direction Year of Occurrence	25	47 310° 2008	51 230° 2000	60 220° 2019	61 250° 2008	52 170° 2006	53 320° 2007	48 330° 2012	49 030° 2020	43 350° 2005	49 250° 2019	43 310° 2006	48 210° 2015	61 250° Apr 2008
Maximum 5-Second	Speed Direction Year of Occurrence	25	55 290° 2017	78 230° 2000	79 230° 2019	75 240° 2008	67 150° 2006	64 300° 2009	64 340° 2012	68 020° 2020	54 360° 2020	67 250° 2019	54 310° 2006	60 220° 2015	79 230° Mar 2019
Precipitation (inches)
	POR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Normal	30	2.53	2.76	3.30	3.22	4.78	3.70	2.08	2.18	2.72	4.37	2.53	2.84	37.01
Monthly Maximum Year of Occurrence		9.07 1932	11.31 2018	7.39 2002	17.64 1922	16.96 2015	11.58 1928	11.13 1973	10.33 1915	12.69 2018	15.66 2018	9.86 2015	8.75 1991	17.64 Apr 1922
Monthly Minimum Year of Occurrence		T 1986	0.01 1918 1916	0.02 1925	0.11 1987	0.22 1911	T 1952 1934	0.00 1993	0.00 2000	T 2019	T 1975 1924	0.00 1903	T 1950	0.00 Aug 2000 Jul 1993 Nov 1903
Maximum in 24 Hours Year of Occurrence	67	4.27 2012	4.72 2018	4.39 1977	4.55 1957	5.34 1989	3.98 2017	4.01 2004	4.05 1976	8.11 2018	5.91 1959	4.78 2015	4.22 1991	8.11 Sep 2018

Number of Days with...	Precipitation > T	30	6.9	6.9	7.8	6.9	9.1	7.2	4.4	5.2	5.1	7.1	6.2	6.5	79.3
Precipitation ≥ 0.10	30	4.0	4.3	4.8	4.5	6.4	5.3	2.9	3.2	3.7	4.8	4.1	4.2	52.2
Precipitation ≥ 0.50	30	1.6	1.6	2.3	2.4	3.5	2.7	1.4	1.5	1.7	2.8	1.7	2.0	25.2
Precipitation ≥ 1.00	30	0.6	0.9	0.9	1.1	1.5	1.1	0.6	0.5	0.8	1.5	0.7	0.7	10.9
Snowfall (inches)
	POR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Normal	30	0.1	1.0	0.3	0.0	0.0	0.0	0.0	0.0	0.0	0.0	T	0.2	1.6
Monthly Maximum Year of Occurrence		12.1 1964	13.5 1978	6.1 1942	T 2007 1938 1928						T 1993 1925	5.0 1976 1937	5.5 1898	13.5 Feb 1978
Maximum in 24 Hours Year of Occurrence		12.1 1964	12.5 2010	6.0 1924	T 2007 1938 1928						T 1993 1925	5.0 1976 1937	5.5 1898	12.5 Feb 2010

Number of Days with...	Snowfall	30	1.6	1.4	0.5	0.*	0.0	0.0	0.0	0.0	0.0	0.*	0.3	1.3	5.1
Snowfall > T	30	0.3	0.6	0.3	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.*	0.3	1.5
Snowfall ≥ 1.0	30	0.*	0.3	0.2	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.1	0.6

POR

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

Normal High Temperature

56.5

60.9

68.6

76.1

83.6

91.5

95.6

95.8

88.6

78.4

66.6

57.9

76.8

Record High
Year of Occurrence

93°
1911

96°
1904

100°
1916

101°
2006

107°
1927

113°
1980

110°
1998

112°
1936

111°
2000

106°
1951

94°
2017

90°
1951

113°
Jun 1980

Average of Extreme Maximums

76.6

80.2

85.4

89.2

94.3

98.8

102.7

103.5

98.7

92.6

83.3

77.7

Normal Low Temperature

36.1

40.1

47.8

55.2

64.5

72.2

75.8

75.7

68.5

57.1

46.2

38.3

56.5

Record Low
Year of Occurrence

-2°
1949

-8°
1899

10°
1943

29°
1989

34°
1903

48°
1903

56°
1924

55°
1915

40°
1942

24°
1917

19°
1950

-1°
1989

-8°
Feb 1899

Average of Extreme Minimums

17.4

22.2

28.3

38.3

49.9

61.3

68.3

66.7

54.0

40.7

29.2

21.2

Normal Mean Temperature

46.3

50.5

58.2

65.6

74.0

81.9

85.7

78.5

67.7

56.4

48.1

66.6

Average Wet Bulb

37.2

41.3

48.2

55.5

64.1

70.0

71.4

70.6

65.9

57.0

47.4

39.6

55.7

Average Dew Point

37.0

40.5

47.3

54.4

63.8

69.8

70.7

69.8

65.1

56.3

46.9

38.7

55.0

Average Number
of Days with...

Maximum ≥ 100°

0.0

0.*

0.1

1.6

7.4

9.7

1.4

0.0

20.2

Minimum ≤ 32°

10.6

6.2

1.9

0.*

0.0

0.1

2.3

8.1

29.2

* value rounds to 0.0 but is non-zero

Degree Days

POR

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

Normal

Heating

582

413

246

285

528

2220

Cooling

102

290

506

642

643

410

154

2824

Relative Humidity (%)

POR

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

Normal

at Midnight CST or 1:00 a.m. CDT

at 6:00 a.m. CST or 7:00 a.m. CDT

at Noon CST or 1:00 p.m. CDT

at 6:00 p.m. CST or 7:00 p.m. CDT

Sunshine

POR

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

Percent of Possible Sunshine

Weather

POR

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

Number of
Days with...

Dense Fog
(Visibility ≤ 1/4 mile)

2.1

1.1

0.9

0.5

0.3

0.1

0.7

1.3

2.1

9.4

Thunderstorms

1.4

2.0

4.0

5.8

7.6

6.3

4.7

3.3

1.9

1.3

46.3

Pressure (inches of mercury)

POR

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

Average

Station Pressure

29.50

29.45

29.38

29.31

29.29

29.34

29.31

29.35

29.40

29.45

29.48

29.38

Sea Level Pressure

30.14

30.08

30.01

29.93

29.90

29.95

29.94

29.97

30.02

30.08

30.12

30.00

Wind (mph)

POR

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

Average Speed

10.7

11.3

12.1

12.2

11.4

10.5

9.9

8.7

8.6

9.8

10.6

10.3

10.5

Prevailing Direction

190°

170°

190°

170°

Maximum
2-Minute

Speed
Direction
Year of Occurrence

47
310°
2008

51
230°
2000

60
220°
2019

61
250°
2008

52
170°
2006

53
320°
2007

48
330°
2012

49
030°
2020

43
350°
2005

49
250°
2019

43
310°
2006

48
210°
2015

61
250°
Apr 2008

Maximum
5-Second

Speed
Direction
Year of Occurrence

55
290°
2017

78
230°
2000

79
230°
2019

75
240°
2008

67
150°
2006

64
300°
2009

64
340°
2012

68
020°
2020

54
360°
2020

67
250°
2019

54
310°
2006

60
220°
2015

79
230°
Mar 2019

Precipitation (inches)

POR

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

Normal

2.53

2.76

3.30

3.22

4.78

3.70

2.08

2.18

2.72

4.37

2.53

2.84

37.01

Monthly Maximum
Year of Occurrence

9.07
1932

11.31
2018

7.39
2002

17.64
1922

16.96
2015

11.58
1928

11.13
1973

10.33
1915

12.69
2018

15.66
2018

9.86
2015

8.75
1991

17.64
Apr 1922

Monthly Minimum
Year of Occurrence

T
1986

0.01
1918
1916

0.02
1925

0.11
1987

0.22
1911

T
1952
1934

0.00
1993

0.00
2000

T
2019

T
1975
1924

0.00
1903

T
1950

0.00
Aug 2000
Jul 1993
Nov 1903

Maximum in 24 Hours
Year of Occurrence

4.27
2012

4.72
2018

4.39
1977

4.55
1957

5.34
1989

3.98
2017

4.01
2004

4.05
1976

8.11
2018

5.91
1959

4.78
2015

4.22
1991

8.11
Sep 2018

Number of
Days with...

Precipitation > T

6.9

7.8

6.9

9.1

7.2

4.4

5.2

5.1

7.1

6.2

6.5

79.3

Precipitation ≥ 0.10

4.0

4.3

4.8

4.5

6.4

5.3

2.9

3.2

3.7

4.8

4.1

4.2

52.2

Precipitation ≥ 0.50

1.6

2.3

2.4

3.5

2.7

1.4

1.5

1.7

2.8

1.7

2.0

25.2

Precipitation ≥ 1.00

0.6

0.9

1.1

1.5

1.1

0.6

0.5

0.8

1.5

0.7

10.9

Snowfall (inches)

POR

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

Normal

0.1

1.0

0.3

0.0

0.2

1.6

Monthly Maximum
Year of Occurrence

12.1
1964

13.5
1978

6.1
1942

T
2007
1938
1928

T
1993
1925

5.0
1976
1937

5.5
1898

13.5
Feb 1978

Maximum in 24 Hours
Year of Occurrence

12.1
1964

12.5
2010

6.0
1924

T
2007
1938
1928

T
1993
1925

5.0
1976
1937

5.5
1898

12.5
Feb 2010

Number of
Days with...

Snowfall

1.6

1.4

0.5

0.*

0.0

0.*

0.3

1.3

5.1

Snowfall > T

0.3

0.6

0.3

0.0

0.*

0.3

1.5

Snowfall ≥ 1.0

0.*

0.3

0.2

0.0

0.1

0.6