| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.70 | 0.82 | -0.12 |
| Feb | 0.79 | 0.89 | -0.10 |
| Mar | 1.46 | 1.57 | -0.11 |
| Apr | 2.77 | 2.93 | -0.16 |
| May | 4.15 | 4.28 | -0.13 |
| Jun | 4.43 | 4.44 | -0.01 |
| Jul | 4.19 | 4.39 | -0.20 |
| Aug | 3.99 | 4.15 | -0.16 |
| Sep | 3.14 | 3.30 | -0.16 |
| Oct | 2.83 | 2.77 | 0.06 |
| Nov | 1.53 | 1.66 | -0.13 |
| Dec | 1.03 | 1.18 | -0.15 |
31.01 | 32.38 | -1.37 |