| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.80 | 0.81 | -0.01 |
| Feb | 0.83 | 0.89 | -0.06 |
| Mar | 1.43 | 1.52 | -0.09 |
| Apr | 2.67 | 2.77 | -0.10 |
| May | 3.56 | 3.64 | -0.08 |
| Jun | 4.29 | 4.38 | -0.09 |
| Jul | 4.45 | 4.48 | -0.03 |
| Aug | 3.91 | 3.94 | -0.03 |
| Sep | 3.32 | 3.45 | -0.13 |
| Oct | 3.14 | 3.06 | 0.08 |
| Nov | 1.61 | 1.63 | -0.02 |
| Dec | 1.15 | 1.31 | -0.16 |
31.16 | 31.88 | -0.72 |