| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.44 | 0.50 | -0.06 |
| Feb | 0.43 | 0.51 | -0.08 |
| Mar | 0.74 | 0.83 | -0.09 |
| Apr | 1.26 | 1.31 | -0.05 |
| May | 2.60 | 2.56 | 0.04 |
| Jun | 3.25 | 3.39 | -0.14 |
| Jul | 2.99 | 3.24 | -0.25 |
| Aug | 2.15 | 2.41 | -0.26 |
| Sep | 1.58 | 1.78 | -0.20 |
| Oct | 1.42 | 1.50 | -0.08 |
| Nov | 0.60 | 0.73 | -0.13 |
| Dec | 0.55 | 0.66 | -0.11 |
18.01 | 19.42 | -1.41 |