| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.65 | 4.74 | -0.09 |
| Feb | 4.71 | 4.85 | -0.14 |
| Mar | 4.92 | 5.00 | -0.08 |
| Apr | 4.07 | 4.27 | -0.20 |
| May | 3.63 | 3.57 | 0.06 |
| Jun | 4.36 | 4.30 | 0.06 |
| Jul | 4.91 | 4.84 | 0.07 |
| Aug | 4.19 | 4.40 | -0.21 |
| Sep | 3.66 | 3.74 | -0.08 |
| Oct | 3.29 | 3.34 | -0.05 |
| Nov | 4.03 | 4.09 | -0.06 |
| Dec | 4.72 | 4.85 | -0.13 |
51.14 | 51.99 | -0.85 |