| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.67 | 3.49 | 0.18 |
| Feb | 3.21 | 3.15 | 0.06 |
| Mar | 4.13 | 4.02 | 0.11 |
| Apr | 4.02 | 3.90 | 0.12 |
| May | 3.66 | 3.63 | 0.03 |
| Jun | 4.40 | 4.38 | 0.02 |
| Jul | 4.18 | 4.16 | 0.02 |
| Aug | 4.57 | 4.44 | 0.13 |
| Sep | 4.29 | 4.33 | -0.04 |
| Oct | 4.84 | 4.67 | 0.17 |
| Nov | 3.80 | 3.67 | 0.13 |
| Dec | 4.38 | 4.32 | 0.06 |
49.15 | 48.16 | 0.99 |