| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.36 | 4.30 | 0.06 |
| Feb | 4.68 | 4.65 | 0.03 |
| Mar | 5.09 | 5.06 | 0.03 |
| Apr | 4.94 | 4.93 | 0.01 |
| May | 4.96 | 5.20 | -0.24 |
| Jun | 4.41 | 4.35 | 0.06 |
| Jul | 4.39 | 4.54 | -0.15 |
| Aug | 3.49 | 3.50 | -0.01 |
| Sep | 3.86 | 3.99 | -0.13 |
| Oct | 3.50 | 3.41 | 0.09 |
| Nov | 3.69 | 3.84 | -0.15 |
| Dec | 4.96 | 5.14 | -0.18 |
52.33 | 52.91 | -0.58 |