| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.17 | 1.14 | 0.03 |
| Feb | 1.10 | 1.09 | 0.01 |
| Mar | 1.86 | 1.87 | -0.01 |
| Apr | 3.85 | 3.83 | 0.02 |
| May | 4.84 | 4.72 | 0.12 |
| Jun | 5.33 | 5.39 | -0.06 |
| Jul | 4.53 | 4.38 | 0.15 |
| Aug | 4.28 | 4.36 | -0.08 |
| Sep | 3.94 | 3.92 | 0.02 |
| Oct | 2.84 | 2.79 | 0.05 |
| Nov | 1.93 | 1.88 | 0.05 |
| Dec | 1.44 | 1.42 | 0.02 |
37.11 | 36.79 | 0.32 |