| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 2.52 | 2.48 | 0.04 |
| Feb | 2.06 | 2.14 | -0.08 |
| Mar | 2.97 | 2.90 | 0.07 |
| Apr | 4.17 | 4.18 | -0.01 |
| May | 4.52 | 4.48 | 0.04 |
| Jun | 4.81 | 4.82 | -0.01 |
| Jul | 4.15 | 4.21 | -0.06 |
| Aug | 3.33 | 3.24 | 0.09 |
| Sep | 3.00 | 2.96 | 0.04 |
| Oct | 3.37 | 3.37 | 0.00 |
| Nov | 3.32 | 3.29 | 0.03 |
| Dec | 2.51 | 2.55 | -0.04 |
40.73 | 40.62 | 0.11 |