| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.36 | 0.37 | -0.01 |
| Feb | 0.61 | 0.55 | 0.06 |
| Mar | 0.87 | 0.84 | 0.03 |
| Apr | 1.73 | 1.68 | 0.05 |
| May | 3.04 | 2.88 | 0.16 |
| Jun | 3.40 | 3.24 | 0.16 |
| Jul | 2.64 | 2.76 | -0.12 |
| Aug | 1.94 | 1.92 | 0.02 |
| Sep | 1.41 | 1.37 | 0.04 |
| Oct | 1.48 | 1.47 | 0.01 |
| Nov | 0.52 | 0.52 | 0.00 |
| Dec | 0.46 | 0.45 | 0.01 |
18.46 | 18.05 | 0.41 |