| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.91 | 3.81 | 0.10 |
| Feb | 4.49 | 4.40 | 0.09 |
| Mar | 4.61 | 4.74 | -0.13 |
| Apr | 4.91 | 5.02 | -0.11 |
| May | 5.27 | 5.42 | -0.15 |
| Jun | 4.36 | 4.18 | 0.18 |
| Jul | 4.26 | 4.47 | -0.21 |
| Aug | 3.67 | 3.30 | 0.37 |
| Sep | 3.46 | 3.60 | -0.14 |
| Oct | 3.89 | 3.84 | 0.05 |
| Nov | 3.84 | 3.77 | 0.07 |
| Dec | 4.81 | 4.65 | 0.16 |
51.48 | 51.20 | 0.28 |