The Western Regional Climate Center, a part of NOAA, has analyzed the long-term (i.e. since 1948) data record of the weather station Yosemite Valley. According to this analysis, average precipitation between October 1 and January 31 is 19.58". The Yosemite Valley weather station reports 5.27" of precipitation since October 1. This is roughly 27% of average.
Below is the average monthly precipitation by month. February is the second-rainiest month, on average.
- January 6.70"
- February 6.21"
- March 5.30"
- April 2.95"
- May 1.50"
- June 0.65"
- July 0.41"
- August 0.21"
- September 0.76"
- October 1.85"
- November 4.71"
- December 6.12