| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.15 | 3.11 | 0.04 |
| Feb | 2.45 | 2.43 | 0.02 |
| Mar | 3.50 | 3.40 | 0.10 |
| Apr | 4.39 | 4.44 | -0.05 |
| May | 4.52 | 4.64 | -0.12 |
| Jun | 4.69 | 4.66 | 0.03 |
| Jul | 4.25 | 3.96 | 0.29 |
| Aug | 3.14 | 2.95 | 0.19 |
| Sep | 3.05 | 2.95 | 0.10 |
| Oct | 3.06 | 3.08 | -0.02 |
| Nov | 3.13 | 3.11 | 0.02 |
| Dec | 3.17 | 3.20 | -0.03 |
42.50 | 41.93 | 0.57 |