| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.62 | 3.46 | 0.16 |
| Feb | 3.04 | 2.90 | 0.14 |
| Mar | 3.94 | 3.88 | 0.06 |
| Apr | 3.51 | 3.52 | -0.01 |
| May | 3.68 | 3.54 | 0.14 |
| Jun | 4.63 | 4.53 | 0.10 |
| Jul | 5.04 | 5.01 | 0.03 |
| Aug | 4.88 | 4.91 | -0.03 |
| Sep | 5.06 | 5.19 | -0.13 |
| Oct | 3.46 | 3.55 | -0.09 |
| Nov | 3.42 | 3.33 | 0.09 |
| Dec | 3.47 | 3.45 | 0.02 |
47.75 | 47.27 | 0.48 |