| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.61 | 3.48 | 0.13 |
| Feb | 3.09 | 3.08 | 0.01 |
| Mar | 3.73 | 3.71 | 0.02 |
| Apr | 4.07 | 4.14 | -0.07 |
| May | 3.98 | 4.00 | -0.02 |
| Jun | 4.68 | 5.24 | -0.56 |
| Jul | 4.61 | 4.96 | -0.35 |
| Aug | 4.24 | 4.25 | -0.01 |
| Sep | 4.05 | 3.87 | 0.18 |
| Oct | 4.57 | 4.54 | 0.03 |
| Nov | 3.68 | 3.65 | 0.03 |
| Dec | 4.10 | 4.29 | -0.19 |
48.41 | 49.21 | -0.80 |