| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.48 | 0.51 | -0.03 |
| Feb | 0.51 | 0.53 | -0.02 |
| Mar | 1.16 | 1.24 | -0.08 |
| Apr | 1.64 | 1.74 | -0.10 |
| May | 2.63 | 2.80 | -0.17 |
| Jun | 3.28 | 3.24 | 0.04 |
| Jul | 3.16 | 3.09 | 0.07 |
| Aug | 2.80 | 2.79 | 0.01 |
| Sep | 1.42 | 1.41 | 0.01 |
| Oct | 1.67 | 1.77 | -0.10 |
| Nov | 0.59 | 0.63 | -0.04 |
| Dec | 0.73 | 0.89 | -0.16 |
20.07 | 20.64 | -0.57 |