| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.43 | 3.62 | -0.19 |
| Feb | 3.32 | 3.42 | -0.10 |
| Mar | 4.25 | 4.51 | -0.26 |
| Apr | 4.09 | 4.14 | -0.05 |
| May | 3.66 | 3.60 | 0.06 |
| Jun | 4.10 | 4.12 | -0.02 |
| Jul | 3.61 | 3.68 | -0.07 |
| Aug | 3.59 | 3.67 | -0.08 |
| Sep | 3.85 | 3.71 | 0.14 |
| Oct | 4.62 | 4.73 | -0.11 |
| Nov | 3.81 | 3.85 | -0.04 |
| Dec | 4.42 | 4.70 | -0.28 |
46.75 | 47.75 | -1.00 |