| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.59 | 0.60 | -0.01 |
| Feb | 0.72 | 0.73 | -0.01 |
| Mar | 1.41 | 1.41 | 0.00 |
| Apr | 2.51 | 2.44 | 0.07 |
| May | 4.48 | 4.42 | 0.06 |
| Jun | 3.65 | 3.72 | -0.07 |
| Jul | 3.90 | 3.81 | 0.09 |
| Aug | 3.38 | 3.17 | 0.21 |
| Sep | 2.19 | 2.17 | 0.02 |
| Oct | 2.08 | 2.04 | 0.04 |
| Nov | 1.20 | 1.20 | 0.00 |
| Dec | 0.84 | 0.82 | 0.02 |
26.95 | 26.53 | 0.42 |