| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.02 | 3.12 | -0.10 |
| Feb | 2.69 | 2.82 | -0.13 |
| Mar | 3.98 | 4.06 | -0.08 |
| Apr | 3.44 | 3.50 | -0.06 |
| May | 3.94 | 4.19 | -0.25 |
| Jun | 4.22 | 4.23 | -0.01 |
| Jul | 4.47 | 4.50 | -0.03 |
| Aug | 4.34 | 4.11 | 0.23 |
| Sep | 4.44 | 4.47 | -0.03 |
| Oct | 3.99 | 4.16 | -0.17 |
| Nov | 3.14 | 3.24 | -0.10 |
| Dec | 3.69 | 3.89 | -0.20 |
45.36 | 46.29 | -0.93 |