| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.53 | 3.63 | -0.10 |
| Feb | 2.88 | 2.89 | -0.01 |
| Mar | 4.16 | 4.12 | 0.04 |
| Apr | 3.69 | 3.64 | 0.05 |
| May | 3.72 | 3.69 | 0.03 |
| Jun | 4.40 | 4.37 | 0.03 |
| Jul | 4.80 | 4.77 | 0.03 |
| Aug | 4.78 | 4.60 | 0.18 |
| Sep | 4.95 | 5.35 | -0.40 |
| Oct | 3.52 | 3.54 | -0.02 |
| Nov | 3.45 | 3.38 | 0.07 |
| Dec | 3.56 | 3.59 | -0.03 |
47.44 | 47.57 | -0.13 |