| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.87 | 0.91 | -0.04 |
| Feb | 0.78 | 0.74 | 0.04 |
| Mar | 1.00 | 1.02 | -0.02 |
| Apr | 1.86 | 1.90 | -0.04 |
| May | 2.89 | 2.90 | -0.01 |
| Jun | 4.03 | 4.10 | -0.07 |
| Jul | 3.99 | 4.28 | -0.29 |
| Aug | 3.18 | 3.16 | 0.02 |
| Sep | 3.29 | 3.33 | -0.04 |
| Oct | 2.55 | 2.53 | 0.02 |
| Nov | 1.59 | 1.47 | 0.12 |
| Dec | 1.13 | 1.07 | 0.06 |
27.16 | 27.41 | -0.25 |