Changes within a gene pool occurring from generation to generation is called microevolution. Allele frequencies in a population may change due to gene flow, genetic drift, natural selection and mutation. These are referred to as the four fundamental forces of evolution.
The Hollister, CA forecast for Apr 03 is 64 degrees and Sunny . There is 45 percentage chance of rain and 5 mph winds from the East-Southeast.
Poway, California, gets 14 inches of rain per year. The US average is 39. Snowfall is 0 inches. The average US city gets 26 inches of snow per year. The number of days with any measurable precipitation is 27. On average, there are 267 sunny days per year in Poway, California. The July high is around 88 degrees. The January low is 42. Sperling's comfort index for Poway is a 71 out of 100, where a higher score indicates a more comfortable year-around climate. The US average for the comfort index is 54.