Date.
Year

Year.

3, 1888 9, 1893 20, 1893 16, 1891 15, 1898 5, 1894 22, 1896 29, 1896 15, 1891 23, 1889 16, 1888 29, 1891

MEAN MONTHLY AND ANNUAL TEMPERATURE (DEGREES FAHRENHEIT).

Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. Annual.

1888.

1889.

1890.

1891.

1892.

1893.

1894.

43.0

1895.

1896.

1897.

1898.

37.0 45.6 46.7 62.1 68.8 77.8 85.4 84.7 79.5 65.0 52.4 45.4
42.9 50.0 57.5 62.8 68.9 81.2 83.9 81.4 76.4
57.9 49.5 45.6
39.9 47.0 51.5 57.6 67.8 72.9 80.2 78.2 71.7 62.3 53.8 43.4
44.4 46.8 51.1 56.1 65.0 71.8 83.0 81.4 69.4 64.5 52.9 43.8
46.6 50.4 51.4 54.5 64.4 67.2 79.0 78.4 68.9 61.8 54.1 45.1
42.0 47.2 49.4 51.1 64.7 72.8 79.3
78.9 64.9 57.8 50.0 47.0
46.9 51.7 60.6 67.0 67.3 82.3 79.6 71.0 61.0 54.4 46.5
46.2 51.3 50.3 58.7 67.2
75.5
77.1 76.4 68.2 64.8 48.4 40.9
49.7 53.1 58.0 54.0 64.4 77.4 83.3 78.0 71.7 67.2 48.7 47.7
45.0 48.6 48.9 62.0 69.2 71.3 78.6 78.4 70.9 59.2 50.5 41.0
39.4 51.1 50.6 62.5 63.3
73.4 81.4

62.1

63.2

60.5

60.9

60.2

58.8

61.0

60.4

63.6

60.3

MONTHLY, ANNUAL, AND SEASONAL PRECIPITATION (INCHES AND HUNDREDTHS).

Year.

Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov.

Dec. Annual.

Season
of.

Seasonal.

1888..

1889.

1890.

1891.

1892.

0.25

1893.

1.28

1894.

1.90

1895.

1896.

1897.

1898.

Mean..

0.53 0.48 0.15 0.04 0.01

3.06 0.16 1.61 0.14 0.00 0.00 0.00 0.00 0.35 0.00 2.39 1.70
0.71 0.36 3.46 0.49 1.22 0.00 0.00 0.00 T. 4.08 0.66 3.21
3.34 1.12 1.10 0.25 0.46 0.00 0.00 T. 0.73 0.00 0.51 2.36
0.57 2.85 0.66 1.36 0.07 0.04 0.00 0.00 1.10 0.00 0.34 3.46
1.79 3.01 0.54 1.64 0.18 0.00 0.00 T. 0.39 0.61 2.17
1.78 3.61 0.43 0.00 0.00 T. 0.00 0.00 0.00 0.13 1.38
1.03 1.25 0.21 0.48 1.42 0.00 0.00 0.50 0.35 0.10 3.75
4.30 1.68 1.61 0.65 0.47 0.00 T. T. 0.08 0.45 0.64 0.61
3.02 0.04 0.99
1.33
0.23 0.00 0.40
3.51 2.11 1.93 0.39 T. T. T.
0.54 0.96 0.74 0.08 0.73 0.00
2.04 1.26 1.82

Length
of Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Νον. Dec.
record.

Annual.

NORMAL MONTHLY AND ANNUAL TEMPERATURE (DEGREES FAHRENHEIT)—Continued.

Eleva- Length

Stations.

tion.

of Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. record.

An

nual.

81.1

90.6

93.2 85.2

59.9 64.6 65.8
65.0 63.6 58.7 51.8 46.5
80.2 87.8 94.4 92.3 84.7 72.2 60.1
55.6 62.9 68.6 67.0 60.6 54.0 47.0 41.9
64.7 74.0 80.2 77.7 72.6 63.5 54.9
64.1 70.7 76.6 77.3 71.5 62.1 54.8
70.7 78.9 84.6 81.8 74.2 64.5 57.1
62.9 67.2 68.9 69.0 68.3
64.6 72.6 78.6
76.5 71.5 64.2 56.3 46.9
64.9 73.9 79.7
76.3 71.4 62.5
52.9
84.0 93.8 99.4 98.1
91.8 77.3 67.8 56.0
58.5 66.6 73.0 70.6 63.0 55.6 48.6
70.4 78.7 86.4 84.2 76.7 66.4
56.4
67.2 75.2 81.3 79.3! 73.8 66.6
65.6 74.3 78.9
97.7
61.9 68.4 72.5 71.1 66.9
59.6 65.0 66.0 63.3

56.5

52.8.

72.6

52.9

47.4

61.5

49.5

61.5

49.4

65.1

!

12 41.1 43.6 46.3 51.1

58.5 66.8 72.7 69.8 62.8 55.5 48.1 42.0
53.9 55.3 56.0 57.0 57.6 56.3
51.6
54.5

54.8

53.8 49.4 56.1 54.7 53.0 50.6

53.3

52.1

NORMAL MONTHLY AND ANNUAL TEMPERATURE (DEGREES FAHRENHEIT)-Continued.

The following are the results of two observations on the minimum winter temperature of the summit of Mount Lyell in the Sierra Nevada Mountains of Central California. This point is situated about 18 miles in an air line and 40 miles by trail east of the Yosemite Valley. Its geographical coordinates, as given in the United States Geographical Surveys West of the One Hundredth Meridian, are: North latitude 37° 44' 11", longitude 119° 16′ 18.07" west. Its elevation, according to the United States Geological Survey, is 13,041 feet above the sea.