| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.01 | 3.11 | -0.10 |
| Feb | 2.68 | 2.84 | -0.16 |
| Mar | 3.93 | 4.04 | -0.11 |
| Apr | 3.47 | 3.51 | -0.04 |
| May | 4.10 | 4.33 | -0.23 |
| Jun | 4.25 | 4.29 | -0.04 |
| Jul | 4.45 | 4.45 | 0.00 |
| Aug | 4.21 | 4.07 | 0.14 |
| Sep | 4.39 | 4.54 | -0.15 |
| Oct | 4.02 | 4.11 | -0.09 |
| Nov | 3.17 | 3.24 | -0.07 |
| Dec | 3.72 | 3.88 | -0.16 |
45.40 | 46.41 | -1.01 |