| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.53 | 3.64 | -0.11 |
| Feb | 2.92 | 2.98 | -0.06 |
| Mar | 3.79 | 4.08 | -0.29 |
| Apr | 3.91 | 3.90 | 0.01 |
| May | 3.99 | 4.19 | -0.20 |
| Jun | 4.08 | 4.09 | -0.01 |
| Jul | 4.19 | 4.27 | -0.08 |
| Aug | 4.17 | 4.19 | -0.02 |
| Sep | 4.15 | 4.62 | -0.47 |
| Oct | 3.19 | 3.30 | -0.11 |
| Nov | 3.05 | 3.07 | -0.02 |
| Dec | 3.43 | 3.77 | -0.34 |
44.40 | 46.10 | -1.70 |