312 



TRANSACTIONS OF THE 

 Summary for December, 1SS4 to 1SSS, at Oroville. 



Tear: 



1884. 



1885. 



1886. 



1S87. 



1888. 



Average. 



Mean temperature . - 

 Highest temperature 

 Lowest temperature . 



Clear days 



Cloudy days 



Fair days 



Rainfall 



Season to date 



Light frost 



53.66 



74.00 



31.00 



12 



16 



3 



9.33 



13.73 



9. 



53.00 



75.00 



37.00 



15 



15 



1 



5.53 



16.00 







52.25 



70.00 



37.00 



15 



11 



5 



2.75 



3.67 



4 



51.00 



67.00 



34.00 



17 



9 



5 



2.60 



3.99 



50.20 



66.00 



35.00 



13 



17 



1 



8.91 



13.75 



9 



52.00 

 70.20 

 35.00 

 14.20 

 15.20 



3 



5.83 



10.23 



3 



The following annual summary for the years 1884, 1885, 1886, 1887, and 

 1888, is for Oroville: 



It will be seen the average annual mean temperature for the five years 

 was 64.15°; the highest was in 1885, 67.25°; lowest, in 1888, 60.15°. The 

 annual maximum was highest in 1887, 87.4°; average, 84.43°; lowest in 

 1885, 82.60°. Minimum, the average was 45.16°; highest in 1885, 48.3°; 

 lowest in 1887, 42.2°. The average number of clear days for the four years 

 (leaving out 1884, as the record was but four months) was 266 days; the 

 highest number in any one year was 287 in 1887, and the lowest was 236 

 in 1885. The average for cloudy days was 67; the highest in anyone year 

 was 91 in 1885, and the least, 48 in 1887. The average number of rainy 

 days in the four years was 54, and 61 was the highest number in 1888, and 

 47 the lowest in 1887. The average annual rainfall for the four years was 

 21.54 in 1888, and the least was 17.88 in 1886. The average number of 

 light frosts for the five years was 12.3, and of killing frosts, 6.3; the most 

 light frost was 22 in 1887, and of killing, 13 in January, 1888. 



Animal Summary for 1884 to 1888, at Oroville. 



Tear: 



Mean temperature ..- 

 Highest temperature 

 Lowest temperature . 



Clear days 



Cloudy days 



Fair days/.. 



Rainfall 



Light frost _. 



18S4. 



64.60 



84.65 



44.61 



*110 



*33 



*10 



13.73 



16 



1885. 



67.25 



82.06 



48.03 



236 



91 



38 



22.76 



4 



1886. 



64.28 



83.34 



46.12 



274 



63 



28 



17.88 



13 



1887. 



64.53 



87.04 



42.02 



287 



48 



20 



17.99 



22 



1888. 



60.10 



85.09 



45.00 



266 



66 



35 



27.52 



Average. 



64.15 



84.43 



45.16 



266 



67 



32 



21.54 



12 



* Four months record. 



Chico Temperature and Rainfall. 



The following table shows the average temperature and rainfall by sea- 

 sons, as deduced from fourteen years' observations, along with the highest 

 and lowest temperatures: 



Seasonal 

 Temperature- 

 Degrees. 



Seasonal Rain- 

 fall — Inches and 

 Tenths. 



Average winter 



Average spring 



Average summer 



Average autumn 



Average yearly 



Highest temperature 

 Lowest temperature . 



47.3 

 62.4 

 81.3 

 64.1 

 63.8 

 10S.0 

 18.0 



11.52 



4.88 



.36 



3.56 



20.32 



