| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.09 | 4.11 | -0.02 |
| Feb | 4.54 | 4.42 | 0.12 |
| Mar | 4.72 | 4.74 | -0.02 |
| Apr | 4.96 | 4.89 | 0.07 |
| May | 4.98 | 5.15 | -0.17 |
| Jun | 4.24 | 4.22 | 0.02 |
| Jul | 4.54 | 4.51 | 0.03 |
| Aug | 3.93 | 3.92 | 0.01 |
| Sep | 3.72 | 3.76 | -0.04 |
| Oct | 3.53 | 3.44 | 0.09 |
| Nov | 3.68 | 3.63 | 0.05 |
| Dec | 4.68 | 4.75 | -0.07 |
51.61 | 51.54 | 0.07 |