| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.51 | 4.49 | 0.02 |
| Feb | 4.64 | 4.52 | 0.12 |
| Mar | 4.94 | 4.84 | 0.10 |
| Apr | 3.90 | 3.93 | -0.03 |
| May | 3.00 | 3.13 | -0.13 |
| Jun | 4.36 | 4.36 | 0.00 |
| Jul | 4.55 | 4.57 | -0.02 |
| Aug | 4.36 | 4.27 | 0.09 |
| Sep | 3.93 | 3.74 | 0.19 |
| Oct | 3.26 | 3.27 | -0.01 |
| Nov | 3.68 | 3.70 | -0.02 |
| Dec | 4.69 | 4.64 | 0.05 |
49.82 | 49.46 | 0.36 |