| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.82 | 3.66 | 0.16 |
| Feb | 3.74 | 3.55 | 0.19 |
| Mar | 2.95 | 2.77 | 0.18 |
| Apr | 1.34 | 1.25 | 0.09 |
| May | 0.55 | 0.47 | 0.08 |
| Jun | 0.12 | 0.13 | -0.01 |
| Jul | 0.00 | 0.01 | -0.01 |
| Aug | 0.03 | 0.04 | -0.01 |
| Sep | 0.07 | 0.07 | 0.00 |
| Oct | 0.82 | 0.77 | 0.05 |
| Nov | 1.89 | 1.69 | 0.20 |
| Dec | 3.75 | 3.66 | 0.09 |
19.08 | 18.07 | 1.01 |