| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.85 | 0.81 | 0.04 |
| Feb | 1.24 | 1.21 | 0.03 |
| Mar | 2.34 | 2.29 | 0.05 |
| Apr | 3.08 | 2.82 | 0.26 |
| May | 5.02 | 4.98 | 0.04 |
| Jun | 4.80 | 4.63 | 0.17 |
| Jul | 4.15 | 3.90 | 0.25 |
| Aug | 3.83 | 3.94 | -0.11 |
| Sep | 2.57 | 2.51 | 0.06 |
| Oct | 2.95 | 2.82 | 0.13 |
| Nov | 1.49 | 1.44 | 0.05 |
| Dec | 1.21 | 1.19 | 0.02 |
33.53 | 32.54 | 0.99 |