| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.29 | 0.28 | 0.01 |
| Feb | 0.38 | 0.39 | -0.01 |
| Mar | 0.78 | 0.75 | 0.03 |
| Apr | 1.50 | 1.46 | 0.04 |
| May | 2.34 | 2.19 | 0.15 |
| Jun | 2.52 | 2.41 | 0.11 |
| Jul | 3.31 | 3.18 | 0.13 |
| Aug | 2.78 | 2.72 | 0.06 |
| Sep | 1.13 | 1.14 | -0.01 |
| Oct | 1.22 | 1.23 | -0.01 |
| Nov | 0.46 | 0.38 | 0.08 |
| Dec | 0.37 | 0.36 | 0.01 |
17.08 | 16.49 | 0.59 |