| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.69 | 4.05 | -0.36 |
| Feb | 3.26 | 3.59 | -0.33 |
| Mar | 4.77 | 5.24 | -0.47 |
| Apr | 4.29 | 4.62 | -0.33 |
| May | 3.50 | 3.45 | 0.05 |
| Jun | 3.65 | 3.77 | -0.12 |
| Jul | 3.06 | 3.11 | -0.05 |
| Aug | 3.65 | 3.80 | -0.15 |
| Sep | 3.89 | 3.83 | 0.06 |
| Oct | 4.53 | 4.72 | -0.19 |
| Nov | 3.91 | 4.17 | -0.26 |
| Dec | 4.59 | 5.01 | -0.42 |
46.79 | 49.36 | -2.57 |