| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.61 | 0.59 | 0.02 |
| Feb | 0.61 | 0.57 | 0.04 |
| Mar | 1.18 | 1.14 | 0.04 |
| Apr | 2.21 | 2.22 | -0.01 |
| May | 3.10 | 3.11 | -0.01 |
| Jun | 4.35 | 4.26 | 0.09 |
| Jul | 4.12 | 4.10 | 0.02 |
| Aug | 3.59 | 3.70 | -0.11 |
| Sep | 2.78 | 2.82 | -0.04 |
| Oct | 2.42 | 2.46 | -0.04 |
| Nov | 1.06 | 1.07 | -0.01 |
| Dec | 0.71 | 0.68 | 0.03 |
26.74 | 26.72 | 0.02 |