| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.48 | 0.50 | -0.02 |
| Feb | 0.69 | 0.66 | 0.03 |
| Mar | 1.39 | 1.48 | -0.09 |
| Apr | 2.51 | 2.60 | -0.09 |
| May | 3.99 | 4.16 | -0.17 |
| Jun | 3.71 | 3.70 | 0.01 |
| Jul | 3.72 | 3.86 | -0.14 |
| Aug | 3.21 | 3.31 | -0.10 |
| Sep | 1.92 | 1.95 | -0.03 |
| Oct | 1.94 | 1.95 | -0.01 |
| Nov | 0.94 | 0.95 | -0.01 |
| Dec | 0.63 | 0.69 | -0.06 |
25.13 | 25.81 | -0.68 |