| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.44 | 1.48 | -0.04 |
| Feb | 1.52 | 1.54 | -0.02 |
| Mar | 2.17 | 2.13 | 0.04 |
| Apr | 3.78 | 3.86 | -0.08 |
| May | 4.21 | 4.31 | -0.10 |
| Jun | 5.48 | 5.44 | 0.04 |
| Jul | 4.59 | 4.39 | 0.20 |
| Aug | 4.18 | 4.25 | -0.07 |
| Sep | 3.65 | 3.52 | 0.13 |
| Oct | 2.92 | 2.93 | -0.01 |
| Nov | 2.28 | 2.30 | -0.02 |
| Dec | 1.68 | 1.76 | -0.08 |
37.90 | 37.91 | -0.01 |