| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.44 | 4.53 | -0.09 |
| Feb | 4.12 | 4.28 | -0.16 |
| Mar | 4.57 | 4.70 | -0.13 |
| Apr | 3.66 | 3.94 | -0.28 |
| May | 3.81 | 3.76 | 0.05 |
| Jun | 4.14 | 4.04 | 0.10 |
| Jul | 4.05 | 3.94 | 0.11 |
| Aug | 4.24 | 4.46 | -0.22 |
| Sep | 3.59 | 3.69 | -0.10 |
| Oct | 3.37 | 3.41 | -0.04 |
| Nov | 3.69 | 4.03 | -0.34 |
| Dec | 4.62 | 4.95 | -0.33 |
48.30 | 49.73 | -1.43 |