| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.53 | 3.62 | -0.09 |
| Feb | 2.91 | 2.94 | -0.03 |
| Mar | 4.18 | 4.12 | 0.06 |
| Apr | 3.67 | 3.68 | -0.01 |
| May | 3.68 | 3.63 | 0.05 |
| Jun | 4.40 | 4.18 | 0.22 |
| Jul | 4.74 | 4.76 | -0.02 |
| Aug | 4.68 | 4.54 | 0.14 |
| Sep | 4.87 | 5.25 | -0.38 |
| Oct | 3.54 | 3.55 | -0.01 |
| Nov | 3.36 | 3.35 | 0.01 |
| Dec | 3.56 | 3.54 | 0.02 |
47.12 | 47.16 | -0.04 |