| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.07 | 4.18 | -0.11 |
| Feb | 3.50 | 3.62 | -0.12 |
| Mar | 5.03 | 5.19 | -0.16 |
| Apr | 4.56 | 4.63 | -0.07 |
| May | 3.53 | 3.56 | -0.03 |
| Jun | 4.04 | 4.06 | -0.02 |
| Jul | 3.29 | 3.37 | -0.08 |
| Aug | 3.71 | 3.69 | 0.02 |
| Sep | 4.05 | 4.01 | 0.04 |
| Oct | 4.73 | 4.88 | -0.15 |
| Nov | 4.30 | 4.34 | -0.04 |
| Dec | 4.82 | 5.03 | -0.21 |
49.63 | 50.56 | -0.93 |