| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.70 | 1.69 | 0.01 |
| Feb | 1.77 | 1.95 | -0.18 |
| Mar | 3.30 | 3.28 | 0.02 |
| Apr | 4.44 | 4.12 | 0.32 |
| May | 5.57 | 5.92 | -0.35 |
| Jun | 4.56 | 4.57 | -0.01 |
| Jul | 3.80 | 3.72 | 0.08 |
| Aug | 3.39 | 3.56 | -0.17 |
| Sep | 3.89 | 3.80 | 0.09 |
| Oct | 3.64 | 3.66 | -0.02 |
| Nov | 2.90 | 2.74 | 0.16 |
| Dec | 2.44 | 2.38 | 0.06 |
41.40 | 41.39 | 0.01 |