| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.64 | 0.65 | -0.01 |
| Feb | 0.83 | 0.86 | -0.03 |
| Mar | 1.46 | 1.44 | 0.02 |
| Apr | 2.54 | 2.47 | 0.07 |
| May | 4.21 | 4.28 | -0.07 |
| Jun | 3.72 | 3.83 | -0.11 |
| Jul | 4.45 | 4.46 | -0.01 |
| Aug | 3.56 | 3.43 | 0.13 |
| Sep | 2.52 | 2.57 | -0.05 |
| Oct | 1.92 | 1.93 | -0.01 |
| Nov | 1.17 | 1.21 | -0.04 |
| Dec | 0.99 | 1.00 | -0.01 |
28.01 | 28.13 | -0.12 |