| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.42 | 3.63 | -0.21 |
| Feb | 2.77 | 2.87 | -0.10 |
| Mar | 4.08 | 4.26 | -0.18 |
| Apr | 3.78 | 3.74 | 0.04 |
| May | 3.95 | 4.03 | -0.08 |
| Jun | 4.22 | 4.34 | -0.12 |
| Jul | 4.93 | 4.91 | 0.02 |
| Aug | 4.53 | 4.85 | -0.32 |
| Sep | 4.40 | 4.46 | -0.06 |
| Oct | 4.08 | 4.11 | -0.03 |
| Nov | 3.36 | 3.35 | 0.01 |
| Dec | 4.28 | 4.42 | -0.14 |
47.80 | 48.97 | -1.17 |