| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.37 | 1.34 | 0.03 |
| Feb | 1.61 | 1.59 | 0.02 |
| Mar | 2.23 | 2.21 | 0.02 |
| Apr | 3.69 | 3.74 | -0.05 |
| May | 4.31 | 4.25 | 0.06 |
| Jun | 5.52 | 5.63 | -0.11 |
| Jul | 4.59 | 4.51 | 0.08 |
| Aug | 3.91 | 3.95 | -0.04 |
| Sep | 3.66 | 3.66 | 0.00 |
| Oct | 2.95 | 2.93 | 0.02 |
| Nov | 2.27 | 2.25 | 0.02 |
| Dec | 1.85 | 1.76 | 0.09 |
37.96 | 37.82 | 0.14 |