| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.68 | 0.71 | -0.03 |
| Feb | 0.78 | 0.84 | -0.06 |
| Mar | 1.44 | 1.49 | -0.05 |
| Apr | 2.49 | 2.65 | -0.16 |
| May | 3.65 | 3.92 | -0.27 |
| Jun | 4.40 | 4.44 | -0.04 |
| Jul | 3.64 | 3.65 | -0.01 |
| Aug | 3.85 | 4.04 | -0.19 |
| Sep | 3.02 | 3.14 | -0.12 |
| Oct | 2.26 | 2.44 | -0.18 |
| Nov | 1.34 | 1.38 | -0.04 |
| Dec | 0.88 | 1.00 | -0.12 |
28.43 | 29.70 | -1.27 |