| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.32 | 3.62 | -0.30 |
| Feb | 2.94 | 3.16 | -0.22 |
| Mar | 3.56 | 3.77 | -0.21 |
| Apr | 3.81 | 3.91 | -0.10 |
| May | 3.75 | 3.93 | -0.18 |
| Jun | 4.61 | 4.66 | -0.05 |
| Jul | 4.26 | 4.11 | 0.15 |
| Aug | 4.30 | 4.23 | 0.07 |
| Sep | 4.47 | 4.63 | -0.16 |
| Oct | 4.76 | 4.91 | -0.15 |
| Nov | 3.54 | 3.70 | -0.16 |
| Dec | 4.20 | 4.45 | -0.25 |
47.52 | 49.08 | -1.56 |