| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.63 | 0.67 | -0.04 |
| Feb | 0.79 | 0.86 | -0.07 |
| Mar | 1.62 | 1.61 | 0.01 |
| Apr | 2.48 | 2.77 | -0.29 |
| May | 2.54 | 2.62 | -0.08 |
| Jun | 1.81 | 1.99 | -0.18 |
| Jul | 1.91 | 1.83 | 0.08 |
| Aug | 1.90 | 1.80 | 0.10 |
| Sep | 1.42 | 1.55 | -0.13 |
| Oct | 1.19 | 1.36 | -0.17 |
| Nov | 0.90 | 1.01 | -0.11 |
| Dec | 0.65 | 0.74 | -0.09 |
17.84 | 18.81 | -0.97 |