| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.74 | 3.87 | -0.13 |
| Feb | 3.52 | 3.60 | -0.08 |
| Mar | 3.85 | 4.11 | -0.26 |
| Apr | 2.98 | 3.01 | -0.03 |
| May | 3.25 | 3.34 | -0.09 |
| Jun | 4.61 | 4.67 | -0.06 |
| Jul | 4.39 | 4.38 | 0.01 |
| Aug | 4.49 | 4.87 | -0.38 |
| Sep | 3.95 | 4.20 | -0.25 |
| Oct | 3.21 | 3.48 | -0.27 |
| Nov | 2.97 | 3.24 | -0.27 |
| Dec | 3.87 | 4.00 | -0.13 |
44.83 | 46.77 | -1.94 |