| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.52 | 4.46 | 0.06 |
| Feb | 4.48 | 4.49 | -0.01 |
| Mar | 4.66 | 4.62 | 0.04 |
| Apr | 3.74 | 3.81 | -0.07 |
| May | 3.60 | 3.55 | 0.05 |
| Jun | 4.64 | 4.82 | -0.18 |
| Jul | 4.03 | 4.22 | -0.19 |
| Aug | 4.68 | 4.45 | 0.23 |
| Sep | 3.84 | 4.00 | -0.16 |
| Oct | 3.30 | 3.29 | 0.01 |
| Nov | 3.81 | 3.89 | -0.08 |
| Dec | 4.52 | 4.71 | -0.19 |
49.82 | 50.31 | -0.49 |