| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.60 | 1.32 | 0.28 |
| Feb | 1.31 | 1.17 | 0.14 |
| Mar | 1.80 | 1.64 | 0.16 |
| Apr | 2.85 | 2.77 | 0.08 |
| May | 3.49 | 3.45 | 0.04 |
| Jun | 3.97 | 4.13 | -0.16 |
| Jul | 4.06 | 4.60 | -0.54 |
| Aug | 3.38 | 3.45 | -0.07 |
| Sep | 3.64 | 3.61 | 0.03 |
| Oct | 3.70 | 3.49 | 0.21 |
| Nov | 2.17 | 1.99 | 0.18 |
| Dec | 1.88 | 1.62 | 0.26 |
33.85 | 33.24 | 0.61 |