| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.71 | 4.65 | 0.06 |
| Feb | 4.71 | 4.76 | -0.05 |
| Mar | 4.90 | 4.85 | 0.05 |
| Apr | 3.98 | 4.00 | -0.02 |
| May | 3.79 | 3.86 | -0.07 |
| Jun | 4.51 | 4.48 | 0.03 |
| Jul | 4.87 | 4.75 | 0.12 |
| Aug | 4.36 | 4.68 | -0.32 |
| Sep | 4.13 | 4.27 | -0.14 |
| Oct | 3.49 | 3.52 | -0.03 |
| Nov | 4.05 | 4.25 | -0.20 |
| Dec | 4.60 | 4.68 | -0.08 |
52.10 | 52.75 | -0.65 |