| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.39 | 0.40 | -0.01 |
| Feb | 0.55 | 0.57 | -0.02 |
| Mar | 0.90 | 0.98 | -0.08 |
| Apr | 1.95 | 1.94 | 0.01 |
| May | 3.30 | 3.37 | -0.07 |
| Jun | 3.09 | 3.19 | -0.10 |
| Jul | 2.28 | 2.45 | -0.17 |
| Aug | 1.57 | 1.73 | -0.16 |
| Sep | 1.24 | 1.27 | -0.03 |
| Oct | 1.65 | 1.64 | 0.01 |
| Nov | 0.53 | 0.53 | 0.00 |
| Dec | 0.44 | 0.50 | -0.06 |
17.89 | 18.57 | -0.68 |