| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.24 | 4.30 | -0.06 |
| Feb | 3.95 | 4.08 | -0.13 |
| Mar | 4.56 | 4.62 | -0.06 |
| Apr | 3.45 | 3.59 | -0.14 |
| May | 3.60 | 3.55 | 0.05 |
| Jun | 4.17 | 4.17 | 0.00 |
| Jul | 3.83 | 3.95 | -0.12 |
| Aug | 4.04 | 4.33 | -0.29 |
| Sep | 3.49 | 3.67 | -0.18 |
| Oct | 3.22 | 3.32 | -0.10 |
| Nov | 3.64 | 3.87 | -0.23 |
| Dec | 4.44 | 4.70 | -0.26 |
46.63 | 48.15 | -1.52 |