| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.38 | 0.37 | 0.01 |
| Feb | 0.52 | 0.51 | 0.01 |
| Mar | 0.97 | 0.93 | 0.04 |
| Apr | 1.83 | 1.85 | -0.02 |
| May | 2.91 | 2.94 | -0.03 |
| Jun | 2.89 | 2.61 | 0.28 |
| Jul | 3.55 | 3.76 | -0.21 |
| Aug | 2.91 | 3.13 | -0.22 |
| Sep | 1.53 | 1.46 | 0.07 |
| Oct | 1.50 | 1.48 | 0.02 |
| Nov | 0.66 | 0.65 | 0.01 |
| Dec | 0.48 | 0.55 | -0.07 |
20.13 | 20.24 | -0.11 |