| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 2.09 | 2.06 | 0.03 |
| Feb | 1.76 | 1.82 | -0.06 |
| Mar | 2.30 | 2.28 | 0.02 |
| Apr | 3.65 | 3.56 | 0.09 |
| May | 4.64 | 4.53 | 0.11 |
| Jun | 4.42 | 4.52 | -0.10 |
| Jul | 4.04 | 4.09 | -0.05 |
| Aug | 3.78 | 3.70 | 0.08 |
| Sep | 3.32 | 3.26 | 0.06 |
| Oct | 3.09 | 3.07 | 0.02 |
| Nov | 2.47 | 2.43 | 0.04 |
| Dec | 2.03 | 2.04 | -0.01 |
37.59 | 37.36 | 0.23 |