| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.66 | 0.71 | -0.05 |
| Feb | 0.74 | 0.81 | -0.07 |
| Mar | 1.46 | 1.52 | -0.06 |
| Apr | 2.43 | 2.71 | -0.28 |
| May | 3.60 | 3.94 | -0.34 |
| Jun | 4.47 | 4.58 | -0.11 |
| Jul | 3.67 | 3.59 | 0.08 |
| Aug | 3.89 | 4.20 | -0.31 |
| Sep | 3.00 | 3.20 | -0.20 |
| Oct | 2.20 | 2.35 | -0.15 |
| Nov | 1.33 | 1.36 | -0.03 |
| Dec | 0.88 | 1.01 | -0.13 |
28.33 | 29.98 | -1.65 |