| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.56 | 0.58 | -0.02 |
| Feb | 0.81 | 0.77 | 0.04 |
| Mar | 1.43 | 1.40 | 0.03 |
| Apr | 2.91 | 2.95 | -0.04 |
| May | 3.83 | 3.75 | 0.08 |
| Jun | 4.51 | 4.34 | 0.17 |
| Jul | 3.32 | 3.30 | 0.02 |
| Aug | 3.38 | 3.35 | 0.03 |
| Sep | 2.93 | 2.85 | 0.08 |
| Oct | 2.28 | 2.29 | -0.01 |
| Nov | 1.19 | 1.18 | 0.01 |
| Dec | 0.82 | 0.85 | -0.03 |
27.97 | 27.61 | 0.36 |