| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.00 | 3.97 | 0.03 |
| Feb | 3.00 | 3.03 | -0.03 |
| Mar | 3.55 | 3.51 | 0.04 |
| Apr | 4.10 | 4.15 | -0.05 |
| May | 5.01 | 5.10 | -0.09 |
| Jun | 5.38 | 5.33 | 0.05 |
| Jul | 4.08 | 4.07 | 0.01 |
| Aug | 4.60 | 5.05 | -0.45 |
| Sep | 5.11 | 5.10 | 0.01 |
| Oct | 4.81 | 4.65 | 0.16 |
| Nov | 4.33 | 4.42 | -0.09 |
| Dec | 3.83 | 4.04 | -0.21 |
51.80 | 52.42 | -0.62 |