| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.39 | 4.40 | -0.01 |
| Feb | 4.37 | 4.34 | 0.03 |
| Mar | 4.64 | 4.60 | 0.04 |
| Apr | 3.54 | 3.50 | 0.04 |
| May | 3.39 | 3.10 | 0.29 |
| Jun | 4.66 | 4.61 | 0.05 |
| Jul | 4.02 | 4.12 | -0.10 |
| Aug | 4.60 | 4.56 | 0.04 |
| Sep | 3.76 | 3.88 | -0.12 |
| Oct | 3.08 | 3.12 | -0.04 |
| Nov | 3.62 | 3.66 | -0.04 |
| Dec | 4.69 | 4.68 | 0.01 |
48.76 | 48.57 | 0.19 |