| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.37 | 3.49 | -0.12 |
| Feb | 3.03 | 3.01 | 0.02 |
| Mar | 4.09 | 4.08 | 0.01 |
| Apr | 4.85 | 4.99 | -0.14 |
| May | 5.19 | 5.16 | 0.03 |
| Jun | 4.76 | 4.84 | -0.08 |
| Jul | 4.33 | 4.08 | 0.25 |
| Aug | 3.43 | 3.37 | 0.06 |
| Sep | 3.18 | 3.29 | -0.11 |
| Oct | 3.44 | 3.40 | 0.04 |
| Nov | 3.41 | 3.40 | 0.01 |
| Dec | 3.83 | 3.84 | -0.01 |
46.91 | 46.95 | -0.04 |