| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.54 | 4.38 | 0.16 |
| Feb | 3.96 | 3.90 | 0.06 |
| Mar | 4.67 | 4.70 | -0.03 |
| Apr | 4.33 | 4.40 | -0.07 |
| May | 4.18 | 4.31 | -0.13 |
| Jun | 4.43 | 4.45 | -0.02 |
| Jul | 4.59 | 4.72 | -0.13 |
| Aug | 4.64 | 4.81 | -0.17 |
| Sep | 4.32 | 4.28 | 0.04 |
| Oct | 3.87 | 3.86 | 0.01 |
| Nov | 4.01 | 4.07 | -0.06 |
| Dec | 4.81 | 4.89 | -0.08 |
52.35 | 52.77 | -0.42 |