| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.46 | 4.41 | 0.05 |
| Feb | 4.20 | 4.31 | -0.11 |
| Mar | 4.65 | 4.62 | 0.03 |
| Apr | 3.55 | 3.67 | -0.12 |
| May | 3.70 | 3.62 | 0.08 |
| Jun | 4.21 | 4.17 | 0.04 |
| Jul | 4.08 | 4.07 | 0.01 |
| Aug | 4.27 | 4.41 | -0.14 |
| Sep | 3.60 | 3.94 | -0.34 |
| Oct | 3.43 | 3.56 | -0.13 |
| Nov | 3.69 | 3.92 | -0.23 |
| Dec | 4.57 | 4.81 | -0.24 |
48.41 | 49.51 | -1.10 |