| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.55 | 3.69 | -0.14 |
| Feb | 3.62 | 3.76 | -0.14 |
| Mar | 4.05 | 4.03 | 0.02 |
| Apr | 4.07 | 4.03 | 0.04 |
| May | 4.32 | 3.99 | 0.33 |
| Jun | 4.00 | 3.95 | 0.05 |
| Jul | 4.81 | 5.08 | -0.27 |
| Aug | 3.96 | 3.95 | 0.01 |
| Sep | 3.07 | 2.96 | 0.11 |
| Oct | 2.80 | 2.55 | 0.25 |
| Nov | 3.04 | 2.99 | 0.05 |
| Dec | 3.79 | 4.06 | -0.27 |
45.08 | 45.04 | 0.04 |