| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.78 | 0.74 | 0.04 |
| Feb | 0.80 | 0.82 | -0.02 |
| Mar | 1.53 | 1.48 | 0.05 |
| Apr | 2.78 | 2.81 | -0.03 |
| May | 4.04 | 3.96 | 0.08 |
| Jun | 4.24 | 4.32 | -0.08 |
| Jul | 4.39 | 4.25 | 0.14 |
| Aug | 4.00 | 4.03 | -0.03 |
| Sep | 3.36 | 3.23 | 0.13 |
| Oct | 2.86 | 2.84 | 0.02 |
| Nov | 1.61 | 1.57 | 0.04 |
| Dec | 1.10 | 1.09 | 0.01 |
31.49 | 31.14 | 0.35 |