| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.69 | 0.79 | -0.10 |
| Feb | 0.79 | 0.87 | -0.08 |
| Mar | 1.47 | 1.54 | -0.07 |
| Apr | 2.84 | 2.89 | -0.05 |
| May | 4.12 | 4.21 | -0.09 |
| Jun | 4.44 | 4.48 | -0.04 |
| Jul | 4.01 | 4.15 | -0.14 |
| Aug | 4.07 | 4.12 | -0.05 |
| Sep | 3.23 | 3.29 | -0.06 |
| Oct | 2.73 | 2.68 | 0.05 |
| Nov | 1.49 | 1.56 | -0.07 |
| Dec | 1.01 | 1.16 | -0.15 |
30.89 | 31.74 | -0.85 |