| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.53 | 0.56 | -0.03 |
| Feb | 0.60 | 0.61 | -0.01 |
| Mar | 1.34 | 1.33 | 0.01 |
| Apr | 1.76 | 1.73 | 0.03 |
| May | 3.05 | 3.14 | -0.09 |
| Jun | 3.32 | 3.21 | 0.11 |
| Jul | 3.32 | 3.16 | 0.16 |
| Aug | 3.09 | 3.13 | -0.04 |
| Sep | 1.51 | 1.52 | -0.01 |
| Oct | 1.85 | 1.88 | -0.03 |
| Nov | 0.70 | 0.66 | 0.04 |
| Dec | 0.79 | 0.82 | -0.03 |
21.86 | 21.75 | 0.11 |