10 
LARAMTE BASTN, WYOMING. 
Monthly means of temperature (°F.) at Laramie, Wyo., 1891-1905. 
January 21. 6 
February 20.3 
March 28.4 
April 37.3 
May 47.4 
June 56.6 
July 62.3 
August 61.9 
September : . 51. 8 
October 42.1 
November 31. 1 
December 21. 8 
Mean 40.3 
Extremes of temperatures and variation of mean annual temperatures at Laramie, Wyo., 
1891-1905. 
Year. 
Highest. 
Lowest. 
°F. 
Date. 
°F. 
Date. 
83 
Aug. 13 
-13 
Dec. 7 
85 
July 19 
-29 
Jan. 11 
87 
July 21 
- 9 
Feb. 27 
88 
July 11 
-27 
Dec. 28 
84 
July 27 
-30 
Feb. 12 
84 
/June 19 
\Aug. 14 
> -« 
Mar. 3 
85 
July 29 
-30 
Jan. 27 
88 
/June 30 
\July 26 
| -23 
Jan. 26 
87 
/June 29 
\July 25 
} -40 
Feb. 12 
91 
June 29 
-27 
Dec. 31 
92 
July 20 
-23 
Dec. 14 
91 
Aug. 1 
[June 2 
-18 
1 
Jan. 26 
84 
{July 25 
lAug. 3 
} " 8 
Mar. 30 
84 
Aug. 22 
-16 
Jan. 28 
91 
July 13 
-42 
Feb. 12 
Mean 
for 
year. 
1891 
1892 
1893 
1894 
1895 
1896 
1897 
1898 
1899 
1900 
1901 
1902 
1903 
1904 
1905 
40.9 
40.5 
40.6 
39.9 
38.5 
41.4 
38.8 
42.6 
40.2 
40.9 
40.1 
41.8 
40.3 
It will be seen from this table that the maximum rarely reaches 
90°. The higher temperatures are of short duration, and all the 
nights are cool, the temperature falling rapidly after sunset. Owing 
to the great dryness of the air the heat is not oppressive. The lower 
winter temperatures do not continue long but recur in irregular 
spells, often separated by long intervals of moderate temperature. 
Strong winds are rare and occur mostly as part of a cold wave or 
accompanying a thunderstorm in summer. 
Precipitation. — The average yearly precipitation at Laramie is 
9.9 inches. The monthly averages for fifteen years are as follows: 
Monthly means of precipitation (inches) at Laramie, Wyo., 1891-1905. 
January 0. 23 
February 34 
March 83 
April 1.14 
May 
June.. . 
July... 
August. 
1.47 I September 0.92 
1.24 October 79 
1.40 November 22 
. 99 ] December 33 
The annual precipitation for the same period is as follows 
1891 13.92 
1892 12.73 
1893 3.84 
1894 7.63 
1895.-. 11.15 
Annual precipitation {inches) at Laramie, Wyo., 1891-1905. 
1896 12.80 1901 
1897 12.48 1902 
1898 7.63 
1899 11.84 
1900 8.53 
8. 52 
7.73 
1903 10.37 
1904.... 9.58 
1905 9.76 
