| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.60 | 3.72 | -0.12 |
| Feb | 4.03 | 3.87 | 0.16 |
| Mar | 4.43 | 4.60 | -0.17 |
| Apr | 4.17 | 4.06 | 0.11 |
| May | 4.63 | 4.94 | -0.31 |
| Jun | 3.91 | 3.88 | 0.03 |
| Jul | 3.06 | 3.09 | -0.03 |
| Aug | 2.82 | 2.67 | 0.15 |
| Sep | 3.74 | 3.57 | 0.17 |
| Oct | 4.51 | 4.59 | -0.08 |
| Nov | 3.85 | 3.79 | 0.06 |
| Dec | 4.52 | 4.63 | -0.11 |
47.27 | 47.41 | -0.14 |