| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.91 | 0.90 | 0.01 |
| Feb | 0.95 | 0.95 | 0.00 |
| Mar | 1.48 | 1.50 | -0.02 |
| Apr | 2.70 | 2.85 | -0.15 |
| May | 3.57 | 3.69 | -0.12 |
| Jun | 4.07 | 4.21 | -0.14 |
| Jul | 4.29 | 4.74 | -0.45 |
| Aug | 3.94 | 4.08 | -0.14 |
| Sep | 3.50 | 3.62 | -0.12 |
| Oct | 3.18 | 3.32 | -0.14 |
| Nov | 1.74 | 1.79 | -0.05 |
| Dec | 1.33 | 1.31 | 0.02 |
31.66 | 32.96 | -1.30 |