| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.47 | 0.45 | 0.02 |
| Feb | 0.59 | 0.57 | 0.02 |
| Mar | 0.90 | 0.89 | 0.01 |
| Apr | 1.85 | 1.87 | -0.02 |
| May | 3.15 | 3.19 | -0.04 |
| Jun | 3.44 | 3.56 | -0.12 |
| Jul | 3.09 | 3.23 | -0.14 |
| Aug | 2.30 | 2.42 | -0.12 |
| Sep | 2.02 | 2.08 | -0.06 |
| Oct | 1.82 | 1.81 | 0.01 |
| Nov | 0.62 | 0.63 | -0.01 |
| Dec | 0.58 | 0.55 | 0.03 |
20.83 | 21.25 | -0.42 |