Normal season: July 1 through June 30
Average seasonal precipitation: 16.19"(411.1 mm)1
| Season | Precipitation | ||
| 2003-2004 | 8.71" | (221.2 mm) | * |
| 2004-2005 | 37.21" | (945.1 mm) | |
| 2005-2006 | 10.21" | (259.3 mm) | |
| 2006-2007 | 2.87" | (72.9 mm) | |
| 2007-2008 | 13.47" | (342.1 mm) | |
| 2008-2009 | 11.40" | (289.5 mm) | |
| 2009-2010 | 17.38" | (441.4 mm) | |
| 2010-2011 | 20.77" | (527.5 mm) | |
| 2011-2012 | 4.56" | (115.8 mm) | |