| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.66 | 0.81 | -0.15 |
| Feb | 0.79 | 0.88 | -0.09 |
| Mar | 1.47 | 1.54 | -0.07 |
| Apr | 2.63 | 2.80 | -0.17 |
| May | 3.74 | 4.06 | -0.32 |
| Jun | 4.71 | 4.92 | -0.21 |
| Jul | 3.73 | 3.68 | 0.05 |
| Aug | 3.73 | 4.17 | -0.44 |
| Sep | 3.07 | 3.19 | -0.12 |
| Oct | 2.27 | 2.29 | -0.02 |
| Nov | 1.37 | 1.42 | -0.05 |
| Dec | 0.97 | 1.11 | -0.14 |
29.14 | 30.87 | -1.73 |