| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.38 | 0.37 | 0.01 |
| Feb | 0.50 | 0.44 | 0.06 |
| Mar | 0.75 | 0.74 | 0.01 |
| Apr | 1.40 | 1.41 | -0.01 |
| May | 2.85 | 2.82 | 0.03 |
| Jun | 3.30 | 3.43 | -0.13 |
| Jul | 2.87 | 3.09 | -0.22 |
| Aug | 2.19 | 2.18 | 0.01 |
| Sep | 1.68 | 1.70 | -0.02 |
| Oct | 1.66 | 1.64 | 0.02 |
| Nov | 0.50 | 0.51 | -0.01 |
| Dec | 0.49 | 0.44 | 0.05 |
18.57 | 18.77 | -0.20 |