| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.86 | 3.88 | -0.02 |
| Feb | 3.92 | 4.02 | -0.10 |
| Mar | 4.25 | 4.31 | -0.06 |
| Apr | 3.90 | 4.07 | -0.17 |
| May | 4.31 | 4.51 | -0.20 |
| Jun | 4.02 | 4.16 | -0.14 |
| Jul | 2.72 | 2.72 | 0.00 |
| Aug | 2.61 | 2.80 | -0.19 |
| Sep | 3.25 | 3.19 | 0.06 |
| Oct | 4.47 | 4.49 | -0.02 |
| Nov | 3.63 | 3.91 | -0.28 |
| Dec | 4.35 | 4.55 | -0.20 |
45.29 | 46.61 | -1.32 |