| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.46 | 3.62 | -0.16 |
| Feb | 2.72 | 2.88 | -0.16 |
| Mar | 3.91 | 4.16 | -0.25 |
| Apr | 3.84 | 3.93 | -0.09 |
| May | 4.06 | 4.11 | -0.05 |
| Jun | 4.35 | 4.53 | -0.18 |
| Jul | 4.87 | 4.88 | -0.01 |
| Aug | 4.69 | 4.43 | 0.26 |
| Sep | 4.44 | 4.40 | 0.04 |
| Oct | 4.23 | 4.34 | -0.11 |
| Nov | 3.29 | 3.40 | -0.11 |
| Dec | 4.15 | 4.41 | -0.26 |
48.01 | 49.09 | -1.08 |