| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 2.14 | 2.16 | -0.02 |
| Feb | 1.98 | 1.88 | 0.10 |
| Mar | 2.72 | 2.61 | 0.11 |
| Apr | 4.17 | 3.91 | 0.26 |
| May | 4.45 | 4.53 | -0.08 |
| Jun | 4.37 | 4.36 | 0.01 |
| Jul | 3.78 | 3.48 | 0.30 |
| Aug | 3.42 | 3.01 | 0.41 |
| Sep | 3.07 | 3.08 | -0.01 |
| Oct | 3.16 | 3.06 | 0.10 |
| Nov | 3.02 | 2.92 | 0.10 |
| Dec | 2.13 | 2.14 | -0.01 |
38.41 | 37.14 | 1.27 |