| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.74 | 0.78 | -0.04 |
| Feb | 0.70 | 0.73 | -0.03 |
| Mar | 1.20 | 1.19 | 0.01 |
| Apr | 1.94 | 2.08 | -0.14 |
| May | 3.03 | 3.20 | -0.17 |
| Jun | 4.39 | 4.33 | 0.06 |
| Jul | 4.04 | 4.21 | -0.17 |
| Aug | 3.19 | 3.32 | -0.13 |
| Sep | 3.05 | 3.08 | -0.03 |
| Oct | 2.72 | 2.78 | -0.06 |
| Nov | 1.27 | 1.34 | -0.07 |
| Dec | 0.93 | 1.01 | -0.08 |
27.20 | 28.05 | -0.85 |