| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.73 | 4.65 | 0.08 |
| Feb | 4.67 | 4.62 | 0.05 |
| Mar | 4.99 | 4.70 | 0.29 |
| Apr | 3.93 | 3.95 | -0.02 |
| May | 3.67 | 3.93 | -0.26 |
| Jun | 4.49 | 4.67 | -0.18 |
| Jul | 4.69 | 4.68 | 0.01 |
| Aug | 4.44 | 4.66 | -0.22 |
| Sep | 4.22 | 4.03 | 0.19 |
| Oct | 3.55 | 3.48 | 0.07 |
| Nov | 4.14 | 4.13 | 0.01 |
| Dec | 4.58 | 4.68 | -0.10 |
52.10 | 52.18 | -0.08 |