| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.45 | 3.56 | -0.11 |
| Feb | 2.87 | 2.92 | -0.05 |
| Mar | 4.11 | 4.15 | -0.04 |
| Apr | 3.70 | 3.84 | -0.14 |
| May | 3.99 | 3.95 | 0.04 |
| Jun | 4.26 | 4.53 | -0.27 |
| Jul | 4.81 | 4.89 | -0.08 |
| Aug | 4.40 | 4.41 | -0.01 |
| Sep | 4.00 | 4.16 | -0.16 |
| Oct | 4.08 | 4.12 | -0.04 |
| Nov | 3.25 | 3.34 | -0.09 |
| Dec | 4.28 | 4.35 | -0.07 |
47.20 | 48.22 | -1.02 |