| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.81 | 0.91 | -0.10 |
| Feb | 0.84 | 0.90 | -0.06 |
| Mar | 1.65 | 1.71 | -0.06 |
| Apr | 2.92 | 2.98 | -0.06 |
| May | 4.16 | 4.32 | -0.16 |
| Jun | 4.87 | 5.01 | -0.14 |
| Jul | 4.25 | 4.25 | 0.00 |
| Aug | 4.51 | 4.67 | -0.16 |
| Sep | 3.21 | 3.37 | -0.16 |
| Oct | 2.62 | 2.67 | -0.05 |
| Nov | 1.58 | 1.64 | -0.06 |
| Dec | 1.13 | 1.24 | -0.11 |
32.55 | 33.67 | -1.12 |