| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.53 | 0.51 | 0.02 |
| Feb | 0.57 | 0.59 | -0.02 |
| Mar | 0.89 | 0.90 | -0.01 |
| Apr | 1.88 | 1.92 | -0.04 |
| May | 3.06 | 3.29 | -0.23 |
| Jun | 3.60 | 3.67 | -0.07 |
| Jul | 3.23 | 3.27 | -0.04 |
| Aug | 2.23 | 2.32 | -0.09 |
| Sep | 2.10 | 2.12 | -0.02 |
| Oct | 1.97 | 1.97 | 0.00 |
| Nov | 0.69 | 0.70 | -0.01 |
| Dec | 0.58 | 0.61 | -0.03 |
21.33 | 21.87 | -0.54 |