| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.73 | 4.66 | 0.07 |
| Feb | 4.64 | 4.61 | 0.03 |
| Mar | 4.99 | 4.71 | 0.28 |
| Apr | 3.94 | 3.96 | -0.02 |
| May | 3.74 | 3.96 | -0.22 |
| Jun | 4.49 | 4.68 | -0.19 |
| Jul | 4.65 | 4.67 | -0.02 |
| Aug | 4.44 | 4.73 | -0.29 |
| Sep | 4.24 | 4.10 | 0.14 |
| Oct | 3.59 | 3.49 | 0.10 |
| Nov | 4.15 | 4.14 | 0.01 |
| Dec | 4.58 | 4.69 | -0.11 |
52.18 | 52.40 | -0.22 |