| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.48 | 0.52 | -0.04 |
| Feb | 0.53 | 0.57 | -0.04 |
| Mar | 0.87 | 0.90 | -0.03 |
| Apr | 1.29 | 1.26 | 0.03 |
| May | 3.09 | 3.21 | -0.12 |
| Jun | 3.61 | 3.80 | -0.19 |
| Jul | 3.36 | 3.21 | 0.15 |
| Aug | 2.62 | 2.52 | 0.10 |
| Sep | 2.42 | 2.63 | -0.21 |
| Oct | 1.86 | 1.90 | -0.04 |
| Nov | 0.65 | 0.65 | 0.00 |
| Dec | 0.66 | 0.71 | -0.05 |
21.44 | 21.88 | -0.44 |