| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 2.38 | 2.40 | -0.02 | 
| Feb | 1.99 | 2.11 | -0.12 | 
| Mar | 2.92 | 2.92 | 0.00 | 
| Apr | 4.05 | 4.11 | -0.06 | 
| May | 4.43 | 4.52 | -0.09 | 
| Jun | 4.71 | 4.86 | -0.15 | 
| Jul | 4.15 | 4.23 | -0.08 | 
| Aug | 3.38 | 3.34 | 0.04 | 
| Sep | 3.04 | 3.03 | 0.01 | 
| Oct | 3.34 | 3.40 | -0.06 | 
| Nov | 3.26 | 3.30 | -0.04 | 
| Dec | 2.44 | 2.50 | -0.06 | 
| 40.09 | 40.72 | -0.63 |