| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.53 | 3.71 | -0.18 |
| Feb | 3.07 | 3.32 | -0.25 |
| Mar | 3.67 | 3.74 | -0.07 |
| Apr | 3.90 | 3.82 | 0.08 |
| May | 4.04 | 3.72 | 0.32 |
| Jun | 4.59 | 4.39 | 0.20 |
| Jul | 4.13 | 4.14 | -0.01 |
| Aug | 3.95 | 4.16 | -0.21 |
| Sep | 3.90 | 3.83 | 0.07 |
| Oct | 4.88 | 4.84 | 0.04 |
| Nov | 3.70 | 3.68 | 0.02 |
| Dec | 4.34 | 4.50 | -0.16 |
47.70 | 47.85 | -0.15 |