| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.64 | 4.01 | -0.37 |
| Feb | 3.41 | 3.68 | -0.27 |
| Mar | 4.59 | 4.68 | -0.09 |
| Apr | 4.26 | 4.10 | 0.16 |
| May | 3.60 | 3.59 | 0.01 |
| Jun | 4.07 | 4.06 | 0.01 |
| Jul | 3.36 | 3.49 | -0.13 |
| Aug | 3.44 | 3.12 | 0.32 |
| Sep | 3.76 | 3.58 | 0.18 |
| Oct | 4.87 | 4.68 | 0.19 |
| Nov | 4.01 | 3.90 | 0.11 |
| Dec | 4.72 | 4.87 | -0.15 |
47.73 | 47.76 | -0.03 |