| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.54 | 0.57 | -0.03 |
| Feb | 0.62 | 0.63 | -0.01 |
| Mar | 1.36 | 1.35 | 0.01 |
| Apr | 1.77 | 1.77 | 0.00 |
| May | 3.12 | 3.18 | -0.06 |
| Jun | 3.31 | 3.20 | 0.11 |
| Jul | 3.41 | 3.23 | 0.18 |
| Aug | 3.14 | 3.11 | 0.03 |
| Sep | 1.55 | 1.53 | 0.02 |
| Oct | 1.88 | 1.87 | 0.01 |
| Nov | 0.72 | 0.67 | 0.05 |
| Dec | 0.79 | 0.84 | -0.05 |
22.21 | 21.95 | 0.26 |