| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.42 | 3.59 | -0.17 |
| Feb | 3.42 | 3.50 | -0.08 |
| Mar | 4.53 | 4.45 | 0.08 |
| Apr | 4.91 | 4.95 | -0.04 |
| May | 5.25 | 5.17 | 0.08 |
| Jun | 4.73 | 4.66 | 0.07 |
| Jul | 4.41 | 4.30 | 0.11 |
| Aug | 3.76 | 3.37 | 0.39 |
| Sep | 3.61 | 3.72 | -0.11 |
| Oct | 3.79 | 3.59 | 0.20 |
| Nov | 3.59 | 3.68 | -0.09 |
| Dec | 4.16 | 4.38 | -0.22 |
49.58 | 49.36 | 0.22 |