| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 3.65 | 3.82 | -0.17 | 
| Feb | 2.90 | 3.28 | -0.38 | 
| Mar | 4.29 | 4.50 | -0.21 | 
| Apr | 4.28 | 4.50 | -0.22 | 
| May | 3.77 | 3.70 | 0.07 | 
| Jun | 4.35 | 4.36 | -0.01 | 
| Jul | 3.87 | 3.95 | -0.08 | 
| Aug | 4.31 | 4.21 | 0.10 | 
| Sep | 4.31 | 4.54 | -0.23 | 
| Oct | 4.76 | 4.72 | 0.04 | 
| Nov | 4.06 | 4.03 | 0.03 | 
| Dec | 4.46 | 4.76 | -0.30 | 
| 49.01 | 50.37 | -1.36 |