| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.10 | 1.11 | -0.01 |
| Feb | 1.12 | 1.09 | 0.03 |
| Mar | 1.88 | 1.82 | 0.06 |
| Apr | 3.95 | 3.95 | 0.00 |
| May | 4.74 | 4.64 | 0.10 |
| Jun | 5.79 | 6.09 | -0.30 |
| Jul | 4.27 | 4.28 | -0.01 |
| Aug | 4.27 | 4.36 | -0.09 |
| Sep | 3.84 | 3.79 | 0.05 |
| Oct | 2.77 | 2.61 | 0.16 |
| Nov | 1.93 | 1.87 | 0.06 |
| Dec | 1.40 | 1.41 | -0.01 |
37.06 | 37.02 | 0.04 |