| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.40 | 4.59 | -0.19 |
| Feb | 4.10 | 4.25 | -0.15 |
| Mar | 4.54 | 4.63 | -0.09 |
| Apr | 3.67 | 3.91 | -0.24 |
| May | 3.77 | 3.80 | -0.03 |
| Jun | 4.08 | 4.07 | 0.01 |
| Jul | 4.03 | 4.01 | 0.02 |
| Aug | 4.31 | 4.58 | -0.27 |
| Sep | 3.62 | 3.75 | -0.13 |
| Oct | 3.36 | 3.45 | -0.09 |
| Nov | 3.65 | 3.98 | -0.33 |
| Dec | 4.62 | 4.94 | -0.32 |
48.15 | 49.96 | -1.81 |