| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.87 | 3.85 | 0.02 |
| Feb | 3.91 | 4.08 | -0.17 |
| Mar | 4.23 | 4.28 | -0.05 |
| Apr | 3.91 | 4.04 | -0.13 |
| May | 4.30 | 4.42 | -0.12 |
| Jun | 4.05 | 4.35 | -0.30 |
| Jul | 2.72 | 2.68 | 0.04 |
| Aug | 2.65 | 2.81 | -0.16 |
| Sep | 3.31 | 3.19 | 0.12 |
| Oct | 4.58 | 4.54 | 0.04 |
| Nov | 3.64 | 3.94 | -0.30 |
| Dec | 4.33 | 4.58 | -0.25 |
45.50 | 46.76 | -1.26 |