| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.62 | 0.60 | 0.02 |
| Feb | 0.69 | 0.71 | -0.02 |
| Mar | 1.44 | 1.55 | -0.11 |
| Apr | 2.88 | 2.87 | 0.01 |
| May | 4.42 | 4.49 | -0.07 |
| Jun | 4.40 | 4.70 | -0.30 |
| Jul | 3.24 | 3.27 | -0.03 |
| Aug | 3.46 | 3.30 | 0.16 |
| Sep | 2.51 | 2.58 | -0.07 |
| Oct | 2.27 | 2.24 | 0.03 |
| Nov | 1.18 | 1.24 | -0.06 |
| Dec | 0.90 | 0.89 | 0.01 |
28.01 | 28.44 | -0.43 |