| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.34 | 0.35 | -0.01 |
| Feb | 0.38 | 0.39 | -0.01 |
| Mar | 0.92 | 0.91 | 0.01 |
| Apr | 1.43 | 1.39 | 0.04 |
| May | 2.17 | 2.13 | 0.04 |
| Jun | 2.75 | 2.58 | 0.17 |
| Jul | 3.11 | 3.09 | 0.02 |
| Aug | 2.97 | 2.80 | 0.17 |
| Sep | 1.16 | 1.18 | -0.02 |
| Oct | 1.44 | 1.41 | 0.03 |
| Nov | 0.50 | 0.48 | 0.02 |
| Dec | 0.49 | 0.57 | -0.08 |
17.66 | 17.28 | 0.38 |