| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.48 | 0.45 | 0.03 |
| Feb | 0.66 | 0.61 | 0.05 |
| Mar | 1.17 | 1.15 | 0.02 |
| Apr | 2.47 | 2.35 | 0.12 |
| May | 3.53 | 3.50 | 0.03 |
| Jun | 3.42 | 3.47 | -0.05 |
| Jul | 2.50 | 2.55 | -0.05 |
| Aug | 2.22 | 2.08 | 0.14 |
| Sep | 1.64 | 1.52 | 0.12 |
| Oct | 1.71 | 1.71 | 0.00 |
| Nov | 0.67 | 0.63 | 0.04 |
| Dec | 0.57 | 0.54 | 0.03 |
21.04 | 20.56 | 0.48 |