| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.45 | 0.48 | -0.03 |
| Feb | 0.52 | 0.57 | -0.05 |
| Mar | 1.08 | 1.20 | -0.12 |
| Apr | 1.59 | 1.70 | -0.11 |
| May | 2.70 | 2.96 | -0.26 |
| Jun | 3.00 | 3.03 | -0.03 |
| Jul | 3.47 | 3.14 | 0.33 |
| Aug | 2.73 | 3.05 | -0.32 |
| Sep | 1.42 | 1.46 | -0.04 |
| Oct | 1.45 | 1.53 | -0.08 |
| Nov | 0.59 | 0.60 | -0.01 |
| Dec | 0.61 | 0.79 | -0.18 |
19.61 | 20.51 | -0.90 |