| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.65 | 0.62 | 0.03 |
| Feb | 0.74 | 0.66 | 0.08 |
| Mar | 1.58 | 1.53 | 0.05 |
| Apr | 2.31 | 2.30 | 0.01 |
| May | 2.25 | 2.19 | 0.06 |
| Jun | 1.96 | 2.07 | -0.11 |
| Jul | 2.27 | 2.41 | -0.14 |
| Aug | 2.20 | 2.32 | -0.12 |
| Sep | 1.39 | 1.41 | -0.02 |
| Oct | 1.08 | 1.03 | 0.05 |
| Nov | 0.85 | 0.77 | 0.08 |
| Dec | 0.69 | 0.67 | 0.02 |
17.97 | 17.98 | -0.01 |