| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.90 | 3.89 | 0.01 |
| Feb | 3.39 | 3.37 | 0.02 |
| Mar | 4.58 | 4.66 | -0.08 |
| Apr | 4.33 | 4.45 | -0.12 |
| May | 3.66 | 3.51 | 0.15 |
| Jun | 4.13 | 4.26 | -0.13 |
| Jul | 3.55 | 3.55 | 0.00 |
| Aug | 3.82 | 3.84 | -0.02 |
| Sep | 3.98 | 3.97 | 0.01 |
| Oct | 4.86 | 4.87 | -0.01 |
| Nov | 4.01 | 4.04 | -0.03 |
| Dec | 4.74 | 4.83 | -0.09 |
48.95 | 49.24 | -0.29 |