| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.70 | 0.83 | -0.13 |
| Feb | 0.79 | 0.88 | -0.09 |
| Mar | 1.47 | 1.58 | -0.11 |
| Apr | 2.80 | 2.96 | -0.16 |
| May | 4.17 | 4.31 | -0.14 |
| Jun | 4.41 | 4.45 | -0.04 |
| Jul | 4.21 | 4.24 | -0.03 |
| Aug | 4.04 | 4.18 | -0.14 |
| Sep | 3.11 | 3.21 | -0.10 |
| Oct | 2.82 | 2.72 | 0.10 |
| Nov | 1.55 | 1.66 | -0.11 |
| Dec | 1.03 | 1.19 | -0.16 |
31.10 | 32.21 | -1.11 |