364 



TRANSACTIONS OF THE 



Report for the Tear 1SSS. 



Mean barometer 29.901 



Highest barometer, January seventeenth 30.39 



Lowest barometer, December twenty-second 29.58 



Yearly range .81 



Highest temperature, September seventh - 105° 



Lowest temperature, January twelfth and sixteenth 25° 



Mean temperature. - — 62.1° 



Yearly range - 70° 



Greatest daily range, June eighth 51° 



Least daily range, December twenty-second - 5° 



Mean daily range --- - -- 28° 



Mean maximum temperature - 77.7° 



Mean minimum temperature 49.7° 



Total rainfall 14.70 



The mean temperature for the past eight years is 63.9°, showing the past 

 year to be 1.8° cooler than the average. Light shocks of earthquake were 

 observed on April eighth, at 7:40 p. m.; April ninth, at 7:05 a. m.; April 

 twelfth, at 5:15 a. m.; and June fifteenth, at 7:40 p. m. 



Summary for the Year 1887. 



Month. 



Mean 

 Temperature. 



Highest 

 Temperature. 



Lowest 

 Temperature. 



Rainfall, 

 in Inches. 



Prevailing 



Wind 

 Direction. 



January 



February 



March.. 



April 



May 



June 



July 



August 



September 



October 



November 



December 



Yearly average 



51.4 

 49.7 

 69.0 

 64.1 

 67.4 

 71.3 

 76.2 

 73.6 

 73.3 

 66.5 

 57.9 

 50.1 



63.5 



78.0 

 84.0 

 88.0 

 89.5 

 90.5 

 99.0 

 105.0 

 99.5 

 98.0 

 94.0 

 85.0 

 72.0 



105.0 



25.5 

 29.0 

 39 

 43.0 

 44.0 

 47.0 

 50.0 

 51.0 

 48.0 

 42.0 

 33.0 

 29.5 



25.5 



.13 



2.85 

 .02 



1.71 

 .17 

 .00 

 .00 

 .00 

 .00 

 .86 

 .92 



1.50 



8.16 



n: 

 s.w. 

 s.w. 



s.w. 

 s.w. 

 s.w. 

 s.w. 

 s.w. 

 s.w. 

 s.w. 

 s.w. 

 s.w. 



sw. 



Chino, San Bernardino County. 



Chino, San Bernardino County, Cal., February 18, 1889. 



Sergeant James A. Barwick, Observer Signal Corps, Sacramento, California: 



Dear Sir: Replying to your request for a brief and instructive article 

 on the temperature and rainfall of San Bernardino County, with data as 

 far back as possible, I have to say, the data at my command are insuffi- 

 cient to do the subjects justice. I requested several gentlemen to do the 

 work, whose means to make a valuable report are ample, but so far they 

 have declined by their silence. My residence at this place began in Octo- 

 ber, 1887, when I commenced to keep an accurate record of the tempera- 

 ture of this locality, and have daily continued it. On pages 182-3 of your 

 Meteorological Review for 1887, are tables showing the rainfall and tem- 

 perature at Riverside, San Bernardino, Colton, and other points. As San 

 Bernardino County comprises every elevation, from about sea level on the 

 Colorado Desert to over ten thousand feet on several mountain tops, the 

 reader will understand that to compile comprehensive and accurate meteor- 

 ological statistics of this county involves the collection of a vast amount of 

 statistics, some of which have never been collected by anybody. 



