| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.72 | 4.14 | -0.42 |
| Feb | 3.44 | 3.67 | -0.23 |
| Mar | 4.93 | 5.25 | -0.32 |
| Apr | 4.26 | 4.49 | -0.23 |
| May | 3.36 | 3.44 | -0.08 |
| Jun | 3.60 | 3.71 | -0.11 |
| Jul | 3.08 | 3.08 | 0.00 |
| Aug | 3.54 | 3.69 | -0.15 |
| Sep | 4.01 | 3.83 | 0.18 |
| Oct | 4.40 | 4.68 | -0.28 |
| Nov | 4.10 | 4.23 | -0.13 |
| Dec | 4.62 | 5.06 | -0.44 |
47.06 | 49.27 | -2.21 |