| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.58 | 0.59 | -0.01 |
| Feb | 0.62 | 0.61 | 0.01 |
| Mar | 1.39 | 1.35 | 0.04 |
| Apr | 1.94 | 1.87 | 0.07 |
| May | 3.04 | 3.08 | -0.04 |
| Jun | 3.53 | 3.37 | 0.16 |
| Jul | 3.21 | 3.02 | 0.19 |
| Aug | 2.99 | 3.04 | -0.05 |
| Sep | 1.49 | 1.48 | 0.01 |
| Oct | 2.01 | 1.93 | 0.08 |
| Nov | 0.79 | 0.76 | 0.03 |
| Dec | 0.89 | 0.90 | -0.01 |
22.48 | 22.00 | 0.48 |