| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.42 | 3.41 | 0.01 |
| Feb | 2.72 | 2.77 | -0.05 |
| Mar | 4.01 | 3.99 | 0.02 |
| Apr | 3.47 | 3.62 | -0.15 |
| May | 4.14 | 4.03 | 0.11 |
| Jun | 4.49 | 4.50 | -0.01 |
| Jul | 4.80 | 4.84 | -0.04 |
| Aug | 4.77 | 4.77 | 0.00 |
| Sep | 4.77 | 4.83 | -0.06 |
| Oct | 3.59 | 3.74 | -0.15 |
| Nov | 3.18 | 3.23 | -0.05 |
| Dec | 3.65 | 3.67 | -0.02 |
47.01 | 47.40 | -0.39 |