| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) | 
|---|---|---|---|
| Jan | 2.10 | 2.21 | -0.11 | 
| Feb | 1.88 | 2.00 | -0.12 | 
| Mar | 2.45 | 2.38 | 0.07 | 
| Apr | 3.91 | 3.92 | -0.01 | 
| May | 4.60 | 4.71 | -0.11 | 
| Jun | 4.42 | 4.41 | 0.01 | 
| Jul | 3.87 | 4.07 | -0.20 | 
| Aug | 4.11 | 4.07 | 0.04 | 
| Sep | 3.33 | 3.27 | 0.06 | 
| Oct | 3.55 | 3.50 | 0.05 | 
| Nov | 2.63 | 2.60 | 0.03 | 
| Dec | 2.19 | 2.26 | -0.07 | 
| 39.04 | 39.40 | -0.36 |