| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.50 | 4.68 | -0.18 |
| Feb | 4.23 | 4.40 | -0.17 |
| Mar | 5.06 | 5.04 | 0.02 |
| Apr | 4.91 | 5.10 | -0.19 |
| May | 4.37 | 4.45 | -0.08 |
| Jun | 4.40 | 4.48 | -0.08 |
| Jul | 3.45 | 3.47 | -0.02 |
| Aug | 3.26 | 3.18 | 0.08 |
| Sep | 3.55 | 3.58 | -0.03 |
| Oct | 4.59 | 4.70 | -0.11 |
| Nov | 4.21 | 4.41 | -0.20 |
| Dec | 4.96 | 5.12 | -0.16 |
51.49 | 52.61 | -1.12 |