Note 5 — HABITAT
Reading edition
The following monthly and annual meteorologic summaries, compiled from United States Weather Bureau records at these stations, have been kindly furnished by Prof. Willis L. Moore, Superintendent of the Bureau. The tabulated records represent the observations of twenty years at Yuma and ten years at Tucson.
Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Year
Absolute maximum temperature, Fahr.:
Yuma 81 91 100 105 112 117 118 115 113 108 92 83 118
Tucson 84 85 95 101 106 111 110 109 106 97 89 82 111
Absolute minimum temperature, Fahr.:
Yuma 22 25 31 40 44 52 61 60 50 41 31 25 22
Tucson 14 20 24 32 38 39 64 60 46 31 23 11 11
Mean maximum temperature, Fahr.:
Yuma 65.1 70.7 78.5 85.4 93.2 101.2 106.7 104.9 99.6 87.2 75.0 67.4 86.6
Tucson 62.9 67.0 74.5 81.4 91.4 100.2 99.0 94.8 92.2 82.8 71.5 63.7 81.8
Mean minimum temperature, Fahr.:
Yuma 42.0 46.1 50.8 55.1 61.4 68.3 77.2 77.6 70.5 58.5 48.8 44.7 58.4
Tucson 34.9 41.5 44.0 48.1 55.3 63.8 75.0 73.6 67.3 52.1 42.5 35.1 52.8
Mean temperature, Fahr.:
Yuma 54.1 58.8 64.5 69.8 77.2 84.9 91.5 90.7 84.4 73.0 61.9 56.0 72.2
Tucson 49.4 53.2 59.5 65.6 74.0 82.3 87.2 83.5 77.7 68.5 57.0 52.0 67.4
Mean precipitation (inches and hundredths):
Yuma 0.42 0.51 0.26 0.07 0.04 T. 0.14 0.35 0.15 0.28 0.29 0.46 3.04
Tucson 0.75 0.98 0.90 0.17 0.16 0.19 2.86 3.08 1.16 0.33 0.37 0.95 12.26
Prevailing Winds:
Yuma N. N. W. W. W. SW. S. S. NE. NE. N. N. N.
Tucson S. S. S. W. S. SW. SE. SE. S. S. S. SE. S.
Average cloudiness (scale 0-10):
Yuma 2.4 2.4 2.4 1.6 1.3 0.8 1.8 2.3 1.1 1.3 1.7 2.5 1.8
Tucson 3.0 3.2 3.2 1.8 1.6 1.5 4.5 4.4 1.9 1.6 1.6 2.9 2.6