| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.46 | 3.71 | -0.25 |
| Feb | 2.82 | 3.01 | -0.19 |
| Mar | 4.05 | 4.16 | -0.11 |
| Apr | 3.98 | 4.15 | -0.17 |
| May | 4.01 | 4.00 | 0.01 |
| Jun | 4.68 | 4.78 | -0.10 |
| Jul | 4.58 | 4.62 | -0.04 |
| Aug | 4.53 | 4.75 | -0.22 |
| Sep | 4.41 | 4.50 | -0.09 |
| Oct | 4.41 | 4.51 | -0.10 |
| Nov | 3.68 | 3.79 | -0.11 |
| Dec | 4.32 | 4.54 | -0.22 |
48.93 | 50.52 | -1.59 |