8 
BULLETIN 1112, U. S. DEPARTMENT OF AGRICULTURE. 
temperatures accompanied by a "norther" sometimes ripen grain in 
from 3 to 5 days. The highest mean and also the extreme tempera- 
tures occur in June, July, and August. During the 12-year period 
the maximum temperature recorded was 112° F., and the minimum 
was 13° F. 
Table 5 contains the average monthly and annual mean tempera- 
tures in the 46-year period, 1871 to 1916, inclusive, and the monthly 
maximum and minimum temperatures in a 38-year period. 
Table 4. — Mean, maximum, and minimum temperatures at Chico, Calif., by months, 
for the 12-year period from 1910 to 1921, inclusive. 
[Data in degrees F.] 
Year. 
Jan. 
Mean: 
1910. 
1911. 
1912. 
1913. 
1914. 
1915. 
1916. 
1917. 
1918. 
1919. 
1920. 
1921. 
Maximum: 
1910... 
1911... 
1912... 
1913... 
1914... 
1915... 
1916... 
1917... 
1918. .. 
1920. 
1921. 
Average . 
Minimum: 
1910.. 
1911... 
1912.. 
1913.. 
1914. . 
1915. . 
1916.. 
1917.. 
1918. . 
1919.. 
1920. . 
1921 . . 
43.1 
46.4 
47.2 
42.3 
47.8 
43.7 
43.0 
42.1 
46.2 
45.8 
46.7 
45.1 
Feb. Mar. Apr. May. June. July. 
Average . . . 45. 
. 63 
. 74 
.1 64 
69 
64 
62 
58 
63 
i 72 
67 
77 
57 
Average ... 22. 6 
47.9 
45.8 
51.4 
48.9 
49.6 
49.6 
53.1 
49.5 
47. 5 
47.7 
50.8 
51.4 
57.0 
55.7 
50.8 
51.1 
58. 
57.2 
56.2 
49.2 
52.0 
50.8 
50.5 
54.5 
61.0 
56.8 
.54.2 
57.4 
59.2 
59.0 
61.4 
56.4 
57.6 
59.9 
57.5 
57.4 
68. 8 
61.4 
64.3 
66.2 
66.8 
61.6 
63.6 
61.6 
63.8 
69.2 
62.8 
63.2 
104 
93 
98 
100 
99 
92 
90 
• 87 
93 
105 
100 
92 
72.6 
74.0 
72.9 
72. 5 
71.5 
73.6 
71.4 
74.0 
79.2 
72.4 
72.6 
75.2 
80.2 
79.4 
78.0 
82.2 
77.7 
79.4 
75.6 
82.0 
76.6 
79.2 
75.6 
78.5 
Aug. ' Sept. 
77.2 
74.8 
76.2 
74.8 
77.2 
79.2 
75.9 
79.2 
76.4 
76.7 
78.0 
73.9 
73. 5 78. 5 i 77. 2 
109 
102 
111 
98 
110 
102 
103 
105 
112 
109 
108 
108 
1 106.4 
30.6 
32.2 
40 
45.5 
110 
110 
110 
100 
100 
110 
102 
111 
106 
lin 
lor, 
109 
106 
102 
106 
112 
106 
110 
105 
107 
110 
112 
111 
105 
71.2 
71.1 
72.0 
69.9 
70.6 
70.2 
70.0 
Ort. Nov. Dec. 
93 
94 
106 
100 
102 
98 
104 
101 
100 
64.8 
62.0 
59.1 
65.7 
60.8 
65.2 
59.0 
68.0 
62.8 
59.0 
58.3 
64.3 
53.4 
52.8 
51.4 
52.4 
54.2 
52.4 
48.4 
53.4 
49.8 
51.3 
50.3 
53.4 
48.0 
45.2 
45.7 
44.4 
43.2 
44.6 
43.8 
58.6 
43.5 
43.5 
45.6 
47.5 
62. 4 51. 9 46. 1 
10S.4 
50.0 
107. 7 99. 3 91. 8 
48. 9 43. 7 35. 
77.8 
An- 
nual . 
62.0 
60.1 
60.0 
61.4 
61.3 
61.4 
59.4 
62.2 
60.4 
60.5 
59.9 
61.2 
60.5 
Table 5. — Average monthly and annual mean temperatures at Chico, Calif., during the 
46-year period from 1871 to 1916, inclusive. 
[ Data in degrees F. The average monthly maximum and minimum temperatures shown are for a 38-year \ 
period.] 
Kind. 
Jan. 
Feb. Mar. 
Apr. 
May. June. 
July. Aug. Sept. 
Oct. 
Nov. 
Dec. 
An- 
nual. 
Mean. 
Maximum 
46.9 
78 
13 
,50. 3 55. 6 
S4 90 
20 25 
61.6 
97 
30 
68. 4 77. 1 
107 114 
33 40 
83. 9 81. 5 74. 6 
117 116 109 
46 48 40 
64.4 
103 
34 
53.8 
88 
21 
47.5 
78 
22 
63.8 
117 
Minimum 
13 
