GRAIN SORGHUMS IN THE TEXAS PANHANDLE. 
9 
TEMPERATURE. 
The data on mean, maximum, and minimum temperatures, by 
months, for the growing season (April to September) in the 6-year 
period from 1914 to 1919, inclusive, are given in Table III. The 
summer days usually are warm to hot, followed by cool nights, which 
gives a wide range of temperature during the 24 hours. The maxi- 
mum temperature frequently goes near the 100° F. mark, but seldom 
exceeds it. June 29, 1918, was the hottest day recorded in this 
6-year period. On that date the temperature registered 106° F. 
Table III. — Monthly data on temperature and wind movement recorded at Amarillo, Tex. , 
171 the six months from April to September, inclusive, each year, during the 6-year 
period from 1914 to 1919, inclusive. 
Year and month. 
Temperature. 
Wind. 
Mean. 
Maximum. 
Minimum. 
Prevail- 
ing 
direction. 
Monthly 
move- 
ment. 
Highest 
hourly 
move- 
ment. 
■tceaciing. 
Date 

xveading. 
Date. 
Season of 1914: 
jy 
-T . 
°F. 
"F. 
JyLiLes. 
Miles. 
April . . . 
56 
88 
21 
20 
8 
bV\ . 
9, 827 
40 
May 
63 
95 
10 
42 
12 
s. 
8, 416 
37 
June 
76 
99 
26 
57 
17 
sw. 
10, 429 
40 
July 
78 
97 
31 
60 
2 
s. 
6, 023 
40 
August . 
76 
QJ. 
31 
57 
s. 
6, 559 
31 
September 
73 
98 
6 
49 
28 
o 
o. 
7, 938 
40 
Season of 1915: 
April . . 
57 
88 
28 
29 
1 
s. 
7,997 
46 
May 
62 
92 
25 
30 
7 
s. 
9,263 
44 
June 
72 
103 
20 
42 
7 
s. 
8,841 
37 
July 
75 
102 
11 
52 
5 
s. 
8,893 
44 
August 
71 
95 
4 
48 
30 
s. 
6,232 
27 
September 
69 
94 
10 
47 
30 
s. 
.7, 860 
33 
Season of 1916: 
A.pril 
53 
87 
11 
26 
8 
NE. 
9,123 
42 
67 
98 
31 
35 
1 
sw. 
9,585 
37 
June 
75 
100 
21 
50 
7 
s. 
8.988 
35 
July 
79 
100 
3 
61 
7 
s. 
6,856 
25 
August 
77 
97 
13 
55 
28 
s. 
7,652 
39 
September 
68 
91 
10 
40 
29 
s. 
8,174 
35 
Season of 1917: 
April 
55 
90 
23 
26 
8 
s. 
10, 157 
42 
May 
58 
98 
17 
30 
7 
SE. 
9,032 
25 
June 
74 
100 
12 
38 
2 
SE. 
8,972 
40 
July 
79 
100 
14 
58 
4 
S. 
8,393 
32 
August 
74 
95 
7 
49 
29 
s. 
7.147 
39 
September 
69 
94 
7 
40 
27 
SE. 
6,4 
35 
Season of 1918: 
April 
53 
87 
26 
31 
21 
SW. 
8, 176 
37 
May 
68 
93 
24 
35 
10 
s. 
8,943 
32 
June 
77 
106 
29 
54 
1 
s. 
6,727 
26 
July 
78 
99 
10 
58 
1 
s. 
7,823 
32 
August 
78 
98 
2 
55 
31 
s. 
7,898 
38 
September 
65 
99 
14 
37 
20 
s. 
8, 176 
26 
Season of 1919: 
April 
55 
88 
21 
26 
10 
sw. 
8,417 
44 
May 
62 
87 
3 
45 
20 
NE. 
7,060 
39 
90 
7 
38 
2 
SE. 
6,561 
42 
July 
76 
95 
11 
61 
22 
S. 
8,341 
35 
August 
78 
101 
6 
60 
8 
S. 
6, 760 
38 
September 
71 
99 
2 
47 
23 
S. 
7,730 
31 
In winter the temperature sometimes reaches zero, and occasion- 
ally lower temperatures occur for short periods only. The average 
date of the last spring frost is about April 19 and that of the first 
fall frost October 30, leaving an average frost-free period of 194 days. 
52686°— 21— Bull. 976 2 
