| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.42 | 0.44 | -0.02 |
| Feb | 0.58 | 0.62 | -0.04 |
| Mar | 0.81 | 0.86 | -0.05 |
| Apr | 1.88 | 2.00 | -0.12 |
| May | 3.09 | 3.22 | -0.13 |
| Jun | 3.48 | 3.62 | -0.14 |
| Jul | 2.64 | 2.73 | -0.09 |
| Aug | 2.22 | 2.27 | -0.05 |
| Sep | 1.81 | 1.79 | 0.02 |
| Oct | 1.71 | 1.73 | -0.02 |
| Nov | 0.54 | 0.58 | -0.04 |
| Dec | 0.44 | 0.50 | -0.06 |
19.62 | 20.36 | -0.74 |