| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.70 | 3.65 | 0.05 |
| Feb | 3.22 | 3.25 | -0.03 |
| Mar | 4.05 | 4.10 | -0.05 |
| Apr | 4.28 | 4.22 | 0.06 |
| May | 4.08 | 4.15 | -0.07 |
| Jun | 4.77 | 4.92 | -0.15 |
| Jul | 4.49 | 4.30 | 0.19 |
| Aug | 4.54 | 4.43 | 0.11 |
| Sep | 4.59 | 4.77 | -0.18 |
| Oct | 4.98 | 5.19 | -0.21 |
| Nov | 3.86 | 3.96 | -0.10 |
| Dec | 4.57 | 4.60 | -0.03 |
51.13 | 51.54 | -0.41 |