Summertime in Eastern Oklahoma and Northwest Arkansas
is a period of warm temperatures and varying amounts of
humidity and rainfall. Average high temperatures range
from the mid 80s in June near Fayetteville to the low to
mid 90s in Tulsa, McAlester and Fort Smith in July and
August. The region experiences several days of 100+
degree readings during a typical summer, and nights are
usually mild with average lows in the 60s and lower 70s.
The majority of summer precipitation falls from
thunderstorms, and these storms are sometimes accompanied
by large hail and strong winds along with occasional
tornadoes. When summer thunderstorms do occur, they tend
to be either in the late afternoon or during the early
morning hours. Total rainfall in the summer months is
less than during the spring and the area receives nearly
75% of the total possible sunshine.
The
following tables summarize the kind of weather usually
seen during the summer months and some weather extremes
the area has experienced in years gone by. Also, a
reminder that...
Summer officially begins on Thursday,
June 21st, 2007 at 1:06 PM CDT
SUMMER
CLIMATOLOGY
TULSA
FORT
SMITH
June
July
August
June
July
August
Average High Temperature
88
94
93
88
93
93
Average Low Temperature
68
73
71
67
71
70
Average Mean Temperature
78
84
82
77
82
81
Record High Temperature
108
113
115
106
111
113
Record Low Temperature
49
51
48
47
50
45
Average Days Above 90 Degrees
13
23
22
13
23
22
Average Rainfall
4.72
2.96
2.85
4.28
3.19
2.56
Record Rainfall *
14.87
11.39
11.80
15.02
14.99
10.89
Record Rainfall in 24 hours *
5.01
7.54
5.37
3.48
7.13
5.09
Record Least Rainfall *
0.27
Trace
0
0.38
0.07
Trace
Average Number of Rain Days
8
5
6
8
7
7
Average Thunderstorm Days
8
6
6
8
7
7
Average Wind Speed (in mph)
9.8
9.4
8.9
6.5
6.1
6.3
Average Sunshine
69%
76%
74%
69%
73%
72%
Mid-Month Time Of Sunrise
606 am
618 am
642 am
602 am
614 am
637 am
Mid-Month Time Of Sunset
842 pm
841 pm
815 pm
834 pm
833 pm
807 pm
Average Heating Degree Days
0
0
0
1
0
0
Average Cooling Degree Days
374
558
505
364
520
495
Temperatures
are reported in Fahrenheit
Rainfall totals are reported in inches
See
climate data for each station for time period of record.
* Rainfall records for Fort Smith since 1945
SUMMER
CLIMATOLOGY
MCALESTER
FAYETTEVILLE
June
July
August
June
July
August
Average High Temperature
88
93
94
84
89
89
Average Low Temperature
67
71
70
64
69
67
Average Mean Temperature
78
82
82
74
79
78
Record High Temperature
106
112
110
104
111
109
Record Low Temperature
45
51
51
42
45
44
Average Days Above 90 Degrees
10
22
22
9
18
19
Average Rainfall
4.53
2.78
2.71
5.26
3.14
3.00
Mid-Month Time Of Sunrise
609 am
621 am
643 am
559 am
611 am
635 am
Mid-Month Time Of Sunset
838 pm
837 pm
812 pm
834 pm
833 pm
807 pm
Average Heating Degree Days
1
0
0
8
0
4
Average Cooling Degree Days
378
537
525
269
430
402
Temperatures
are reported in Fahrenheit
Rainfall totals are reported in inches
See
climate data for each station for time period of record.
National Weather Service
Tulsa, OK
10159 E. 11th St. Suite 300
Tulsa, OK 74128
918-838-7838
Page Author: WFO Tulsa, OK
Web Master's Email:sr-tsa.webmaster@noaa.gov
Page last modified:
January 12, 2006
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National Weather Service Forecast Office
