| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.13 | 4.28 | -0.15 |
| Feb | 3.55 | 3.73 | -0.18 |
| Mar | 4.58 | 4.70 | -0.12 |
| Apr | 4.12 | 4.22 | -0.10 |
| May | 3.75 | 3.86 | -0.11 |
| Jun | 4.16 | 4.18 | -0.02 |
| Jul | 4.00 | 3.93 | 0.07 |
| Aug | 4.57 | 4.40 | 0.17 |
| Sep | 3.76 | 3.76 | 0.00 |
| Oct | 3.53 | 3.82 | -0.29 |
| Nov | 3.68 | 3.71 | -0.03 |
| Dec | 4.32 | 4.49 | -0.17 |
48.15 | 49.08 | -0.93 |