| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.80 | 0.81 | -0.01 |
| Feb | 0.89 | 0.85 | 0.04 |
| Mar | 1.52 | 1.39 | 0.13 |
| Apr | 2.77 | 2.86 | -0.09 |
| May | 4.04 | 3.96 | 0.08 |
| Jun | 4.40 | 4.37 | 0.03 |
| Jul | 4.33 | 4.24 | 0.09 |
| Aug | 4.13 | 3.95 | 0.18 |
| Sep | 3.35 | 3.40 | -0.05 |
| Oct | 2.93 | 2.89 | 0.04 |
| Nov | 1.68 | 1.58 | 0.10 |
| Dec | 1.15 | 1.17 | -0.02 |
31.99 | 31.47 | 0.52 |