306 



TRANSACTIONS OF THE 



below the average; the lowest was 20°, or 10° below the average. The high- 

 est barometer was 30.52 on the seventeenth, the highest reading I have any 

 record of; the lowest was 29.44; mean, 30.05. Clear days, 11; cloudy, 17; 

 fair, 3. Rain fell for 13 days, and a trace on the 14th. Rainfall for the 

 month, 7.72 inches; season, to date, 11.71 inches. Light frosts, none; 

 heavy, none; hard, 13. 



Summary for January, 1884 to 1S8S, at Oroville. 



Tear : 



1884. 



1SS5. 



1S86. 



1887. 



1SS8. 



Average. 



Mean temperature ... 

 Highest temperature. 

 Lowest temperature.. 



Clear days 



Cloudy days ._ 



Fair days 



Rainfall 



Season to date 



Light frost 



50.45 

 70.00 

 35.00 



53.23 



74.00 



34.00 



16 



12 



3 



2.10 



15.83 



1 



48.18 



66.00 



29.00 



18 



11 



2 



5.17 

 22.17 



9 



50.28 



70.00 



32.00 



24 



5 



2 



1.02 

 4.11 



7 



45.41 



65.00 



20.00 



11 



17 



3 



7.72 



11.71 



49.51 



69.00 



30.00 



17 



11.1 



2.2 



4.0 



13.45 



22 



February, 1888 — Was a pleasant month; at no time was the temperature 

 at the freezing point; less than one inch of rain fell. The mean tempera- 

 ture was 55.2°, or about 2° above the average for the last five Februarys; 

 the highest was 79°, about 6° above the average; lowest, 34°, or 1° below 

 the average. The almonds and apricot trees were in full bloom by the 

 fifteenth instant. Highest barometer was 30.25; lowest, 29.70; mean, 

 29.98. There were 21 clear, 4 cloudy, and 4 fair days. It rained part of 

 5 days; rainfall, .99, and for the season to date, 12.70. Prevailing 

 winds were southerly. Light frost occurred on the second, third, sixth, and 

 seventh. Thermometer at 6 a. m. at each date was 39°, 34°, 35°, 37°. 



Summary for February, IS84 to 1888, at Oroville. 



Year : 



1884. 



18S5. 



1S86. 



1887. 



1888. 



Average. 



Mean temperature . . . 

 Highest temperature 

 Lowest temperature . 



Clear days 



Cloudy days 



Fair days 



Rainfall 



Season to date 



Light frost 



49.46 



74.00 

 25.00 



59.16 



70.00 



38.00 



18 



6 



4 



0.73 



16.56 



1 



57.10 



70.00 



44.00 



18 



3 



7 



0.36 



25.53 



1 



47.30 



70.00 



32.00 



15 



13 







8.93 



13.65 



4 



55.20 



79.00 



34.00 



21 



4 



4 



0.99 



12.70 



4 



53.53 



73.00 



35.00 



18 



6.2 



3.3 



2.75 



17.40 



3.2 



March, 1888 — Came in with a cold rain storm lasting four days; the rain 

 was 1.64 inches. Range of the thermometer during the four days, highest, 

 64°; lowest, 40°. Mean for March was 56.03°; this was 4° below the average 

 for the last five years; highest temperature, 78°; lowest, 40°. Highest 

 barometer, 30.38; lowest, 29.54; mean, 29.94. Clear days, 19; cloudy, 6; 

 fair, 6. Days that rain fell, 9; rainfall, 3.44; season to date, 16.14. Pre- 

 vailing winds, southerly. No frost. On the third, a hail storm with thun- 

 der and zigzag lightning, lasting about fifteen minutes, followed by a light 

 rain for half an hour, measuring .18 of an inch. Thermometer, 48°; 

 barometer, 29.73. This month the nectarine, peach, plum, pear, apple, 

 and on the twenty-fourth orange and lemon trees were in bloom. 



