STATE ACKHTI.TIKAI, SOCIETY. 



345 



over tli«' town, accompanied with thunder and Lightning. Precipitation, 

 0.07 of an inch. During the shower a beautiful double rainbow was seen 

 in tlic cast. The mean barometer for the month was 29.94; highest, 30.22; 

 lowest, 29.62. Number of clear days. 21: cloudy, 7: fair, 2. Rain fell on 

 the sixth, eighth, ninth, thirteenth, nineteenth, twentieth, twenty-ninth, 

 and sprinkled on the tenth. Rainfall for the month, 2. 81 inches; season 

 to date, 17.41 inches. Prevailing winds northwesterly. Number of days 

 from southwest. •">: northwest, 13; west. •">: southeast. 7. One light frost, 

 on the eleventh. 



Meteorological Record and Summary for the Year 1886, at Oroville, 



Butte County, California. 



January, 1886 — Was the coldest month we have any record of. Com- 

 mencing on the first, a cold wave passed over the State. At 6:30 a. m. the 

 reading of the thermometer registered at the following dates were, on the 

 first, fourth, fifth, eighth, tenth, and twelfth, 32°: on the second and seventh, 

 31°, and on the sixth, 29°. 



In January, 1884, the lowest temperature recorded was 35°; the highest, 

 70°; mean, 50.45°. In 1885 the mean for January was 53.23°; lowest, 34°; 

 highest, 74°. January, 1886, mean was 48.18°; lowest, 29°: highest, 66°. 

 The mean for January, 1884, was 2.27°, and January, 1885, 5.05° higher 

 than January, 1886. There were fifteen clear, two fair, three foggy, and 

 eleven cloudy days in January. Rain fell on ten days. Rainfall, 5.17 

 inches. January, 1885, 2.10 inches. There were eleven frosts during the 

 month — nine killing, one heavy, and one light. 



February, 1886 — The mean was 57.01°; the highest recorded was 70°; 

 the lowest, 44°. In comparing the mean of this month with February, 1885, 

 the latter shows 2.15° the highest, while the maximum was the same, 70°, 

 and the minimum but 2° in favor of 1885 — 44° and 46°. The mild tempera- 

 ture during the last part of January, brought the almond, apricot, and 

 peach trees in full bloom, and as early as the eighteenth of February some 

 orange trees were in blossom. There were eighteen clear, seven fair, and 

 three cloudy days this month. Rainfall, 0.36 inches. February, 1885, 

 0.73 inches. But one very light frost this month. 



March, 1886 — The temperature was considerably below the average, 

 owing to continued heavy rains. Mean was 55.18°; highest, 75°; lowest, 

 40°. The mean of March, 1885, was 13° the highest. The maximum was 

 11° and the minimum 6° in favor of 1885. Number of clear days, fourteen; 

 fair, six; cloudy, eleven. Rainfall, 2.70 inches; rainfall March, 1885, 0.25 

 inches; excess 1886, 2.45 inches. One very light frost in March, 1886. 



April, 1886 — The mean was below the average, owing to the unusual num- 

 ber of rainy days. Mean for the month was 60.27°; highest, 84°; lowest, 

 44°. The maximum and minimum was nearly the same for both years — 

 1885, 84° and 42°, 4.45° the highest mean. Number of clear days, thirteen; 

 fair, four; cloudy, thirteen. Rainfall, 5.48 inches; rainfall April, 1885, 1.64 

 inches; excess 1886, 3.84 inches. No frost this month. 



May, 1886 — The temperature for this month was about the average, 



