| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.87 | 0.84 | 0.03 |
| Feb | 0.93 | 0.89 | 0.04 |
| Mar | 1.79 | 1.69 | 0.10 |
| Apr | 3.16 | 2.93 | 0.23 |
| May | 4.37 | 4.21 | 0.16 |
| Jun | 4.86 | 5.01 | -0.15 |
| Jul | 4.32 | 4.09 | 0.23 |
| Aug | 4.41 | 4.42 | -0.01 |
| Sep | 3.38 | 3.38 | 0.00 |
| Oct | 2.53 | 2.49 | 0.04 |
| Nov | 1.62 | 1.53 | 0.09 |
| Dec | 1.24 | 1.21 | 0.03 |
33.48 | 32.69 | 0.79 |