| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.50 | 3.59 | -0.09 |
| Feb | 2.91 | 2.84 | 0.07 |
| Mar | 4.04 | 3.93 | 0.11 |
| Apr | 3.54 | 3.62 | -0.08 |
| May | 3.73 | 3.90 | -0.17 |
| Jun | 4.49 | 4.33 | 0.16 |
| Jul | 5.42 | 5.14 | 0.28 |
| Aug | 5.16 | 5.43 | -0.27 |
| Sep | 5.16 | 5.11 | 0.05 |
| Oct | 3.83 | 4.29 | -0.46 |
| Nov | 3.10 | 3.21 | -0.11 |
| Dec | 3.54 | 3.58 | -0.04 |
48.42 | 48.97 | -0.55 |