| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.61 | 3.45 | 0.16 |
| Feb | 3.01 | 2.90 | 0.11 |
| Mar | 3.91 | 3.89 | 0.02 |
| Apr | 3.54 | 3.53 | 0.01 |
| May | 3.65 | 3.54 | 0.11 |
| Jun | 4.62 | 4.56 | 0.06 |
| Jul | 5.07 | 4.95 | 0.12 |
| Aug | 4.85 | 4.87 | -0.02 |
| Sep | 5.00 | 5.18 | -0.18 |
| Oct | 3.45 | 3.58 | -0.13 |
| Nov | 3.45 | 3.34 | 0.11 |
| Dec | 3.46 | 3.46 | 0.00 |
47.62 | 47.25 | 0.37 |