| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.89 | 0.91 | -0.02 |
| Feb | 0.86 | 0.82 | 0.04 |
| Mar | 1.64 | 1.58 | 0.06 |
| Apr | 2.92 | 2.88 | 0.04 |
| May | 4.21 | 4.15 | 0.06 |
| Jun | 5.21 | 5.05 | 0.16 |
| Jul | 4.15 | 4.34 | -0.19 |
| Aug | 4.48 | 4.64 | -0.16 |
| Sep | 3.39 | 3.46 | -0.07 |
| Oct | 2.81 | 2.73 | 0.08 |
| Nov | 1.71 | 1.58 | 0.13 |
| Dec | 1.18 | 1.17 | 0.01 |
33.45 | 33.31 | 0.14 |