| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.42 | 3.37 | 0.05 |
| Feb | 2.64 | 2.53 | 0.11 |
| Mar | 3.95 | 3.75 | 0.20 |
| Apr | 4.16 | 4.08 | 0.08 |
| May | 4.19 | 4.27 | -0.08 |
| Jun | 4.39 | 4.70 | -0.31 |
| Jul | 4.51 | 4.53 | -0.02 |
| Aug | 4.16 | 4.47 | -0.31 |
| Sep | 4.85 | 5.05 | -0.20 |
| Oct | 4.18 | 4.46 | -0.28 |
| Nov | 3.40 | 3.52 | -0.12 |
| Dec | 3.65 | 3.66 | -0.01 |
47.50 | 48.39 | -0.89 |