| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.03 | 3.18 | -0.15 |
| Feb | 3.09 | 3.14 | -0.05 |
| Mar | 4.57 | 4.60 | -0.03 |
| Apr | 5.23 | 5.36 | -0.13 |
| May | 5.25 | 5.17 | 0.08 |
| Jun | 3.69 | 3.63 | 0.06 |
| Jul | 3.75 | 3.71 | 0.04 |
| Aug | 3.51 | 3.40 | 0.11 |
| Sep | 3.48 | 3.65 | -0.17 |
| Oct | 3.73 | 3.81 | -0.08 |
| Nov | 4.32 | 4.40 | -0.08 |
| Dec | 3.74 | 3.80 | -0.06 |
47.39 | 47.85 | -0.46 |