| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.67 | 3.69 | -0.02 |
| Feb | 2.88 | 2.97 | -0.09 |
| Mar | 4.36 | 4.41 | -0.05 |
| Apr | 3.58 | 3.71 | -0.13 |
| May | 3.81 | 3.74 | 0.07 |
| Jun | 4.10 | 4.20 | -0.10 |
| Jul | 4.91 | 4.65 | 0.26 |
| Aug | 4.36 | 4.50 | -0.14 |
| Sep | 3.94 | 3.97 | -0.03 |
| Oct | 4.04 | 4.13 | -0.09 |
| Nov | 3.30 | 3.38 | -0.08 |
| Dec | 4.35 | 4.49 | -0.14 |
47.30 | 47.84 | -0.54 |