| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 2.79 | 2.83 | -0.04 |
| Feb | 2.56 | 2.60 | -0.04 |
| Mar | 4.13 | 4.08 | 0.05 |
| Apr | 4.74 | 5.08 | -0.34 |
| May | 5.65 | 5.84 | -0.19 |
| Jun | 4.23 | 4.31 | -0.08 |
| Jul | 4.12 | 3.97 | 0.15 |
| Aug | 3.58 | 3.46 | 0.12 |
| Sep | 4.03 | 4.16 | -0.13 |
| Oct | 4.18 | 4.15 | 0.03 |
| Nov | 4.06 | 4.14 | -0.08 |
| Dec | 3.19 | 3.20 | -0.01 |
47.26 | 47.82 | -0.56 |