| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.45 | 0.41 | 0.04 |
| Feb | 0.50 | 0.47 | 0.03 |
| Mar | 1.13 | 1.06 | 0.07 |
| Apr | 1.60 | 1.65 | -0.05 |
| May | 2.40 | 2.54 | -0.14 |
| Jun | 3.03 | 2.89 | 0.14 |
| Jul | 3.17 | 3.16 | 0.01 |
| Aug | 2.90 | 2.94 | -0.04 |
| Sep | 1.31 | 1.35 | -0.04 |
| Oct | 1.50 | 1.51 | -0.01 |
| Nov | 0.60 | 0.57 | 0.03 |
| Dec | 0.53 | 0.64 | -0.11 |
19.12 | 19.19 | -0.07 |