| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.04 | 4.01 | 0.03 |
| Feb | 4.47 | 4.34 | 0.13 |
| Mar | 4.68 | 4.75 | -0.07 |
| Apr | 5.01 | 4.89 | 0.12 |
| May | 5.04 | 5.12 | -0.08 |
| Jun | 4.11 | 4.14 | -0.03 |
| Jul | 4.39 | 4.40 | -0.01 |
| Aug | 3.86 | 3.83 | 0.03 |
| Sep | 3.66 | 3.70 | -0.04 |
| Oct | 3.58 | 3.47 | 0.11 |
| Nov | 3.67 | 3.58 | 0.09 |
| Dec | 4.64 | 4.71 | -0.07 |
51.15 | 50.94 | 0.21 |