| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.59 | 0.56 | 0.03 |
| Feb | 0.81 | 0.76 | 0.05 |
| Mar | 1.51 | 1.51 | 0.00 |
| Apr | 2.98 | 2.99 | -0.01 |
| May | 4.08 | 4.17 | -0.09 |
| Jun | 4.39 | 4.33 | 0.06 |
| Jul | 3.02 | 3.11 | -0.09 |
| Aug | 3.63 | 3.74 | -0.11 |
| Sep | 2.67 | 2.68 | -0.01 |
| Oct | 2.27 | 2.33 | -0.06 |
| Nov | 1.24 | 1.22 | 0.02 |
| Dec | 0.85 | 0.85 | 0.00 |
28.04 | 28.25 | -0.21 |