| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.37 | 3.64 | -0.27 |
| Feb | 3.30 | 3.43 | -0.13 |
| Mar | 4.26 | 4.55 | -0.29 |
| Apr | 4.04 | 4.14 | -0.10 |
| May | 3.60 | 3.66 | -0.06 |
| Jun | 4.12 | 4.17 | -0.05 |
| Jul | 3.63 | 3.72 | -0.09 |
| Aug | 3.53 | 3.65 | -0.12 |
| Sep | 3.81 | 3.75 | 0.06 |
| Oct | 4.65 | 4.74 | -0.09 |
| Nov | 3.78 | 3.83 | -0.05 |
| Dec | 4.37 | 4.67 | -0.30 |
46.46 | 47.95 | -1.49 |