| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.33 | 3.69 | -0.36 |
| Feb | 2.97 | 3.23 | -0.26 |
| Mar | 3.86 | 4.21 | -0.35 |
| Apr | 3.94 | 4.29 | -0.35 |
| May | 3.64 | 3.66 | -0.02 |
| Jun | 4.32 | 4.26 | 0.06 |
| Jul | 4.15 | 4.16 | -0.01 |
| Aug | 4.08 | 4.18 | -0.10 |
| Sep | 4.26 | 4.38 | -0.12 |
| Oct | 4.77 | 5.21 | -0.44 |
| Nov | 3.69 | 3.97 | -0.28 |
| Dec | 4.14 | 4.61 | -0.47 |
47.15 | 49.85 | -2.70 |